What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which layover airport has the shortest travel time from Seattle to San Diego?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 8h 08m.

Which airport is the most popular layover for flights between Seattle and San Diego?

Las Vegas (LAS) was the most common stop: 73% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Diego?

Alaska Airlines, United Airlines, and Frontier are the most popular carriers operating from Seattle/Tacoma Intl to San Diego

How many flights depart from Seattle to San Diego on average per day?

As of November 2025, 22 flights take off from Seattle and land in San Diego each day. The most common flight departure time for this route is 8:00PM, with 44% of daily flights taking off in the evening.

How often are flights from Seattle to San Diego delayed?

Historically, on average around 15% of flights between Seattle and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

What airlines fly to San Diego?

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to San Diego from Seattle according to our data. Alaska Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

How many flights depart from Seattle to San Diego on average per week?

The number of flights available between Seattle and San Diego is 158 per week as of November 2025. The most frequent departure day is Thu, with 30% of weekly flights leaving on this day.

What is the most punctual flight time for Seattle to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Which airline has the best punctuality record on Seattle to San Diego flights?

According to our data, China Airlines have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Which layover airport offers the lowest fares from Seattle to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $169.

Which layover airport has the shortest connection time from Seattle to San Diego?

Las Vegas (LAS) has the shortest average layover time for this route: 5h 27m.

Which airlines fly direct from Seattle to San Diego?

Alaska Airlines and Delta Airlines provide direct flights from Seattle Tacoma International Airport (SEA) to San Diego Airport (SAN). However, you can get on one-stop or two-stop flights by various airlines. United Airlines offer one-stop flights on the route with layovers in San Francisco (SFO). American Airlines provide one-stop flights with layovers in Phoenix (PHX) or Dallas (DFW). Spirit Airlines offer one-stop flights to San Diego with a layover in Las Vegas (LAS). What is the best way to get in and out of airports in Seattle and San Diego? Several options offer transfers to and from Seattle and San Diego. The best option depends on your preference and travel needs. If you are on solo travel and have less luggage, public transport is the best option. If coming from Downtown Seattle or any other part of the city, you can take the Link light rail, which departs every ten minutes. Sound Transit and King County Metro offer bus services to and from the airport. You can find the buses near the light rail station on International Boulevard. Public transport options are also cheaper and more reliable ways to get to the airport. If you have a late-night flight or prefer private transfers, you can opt for a taxi or Ride-share app. Alternatively, you can drive your car to the airport. Seattle-Tacoma International Airport (SEA) offers long-term and short-term parking options. Private transfers are comfortable and faster but pricier than private transfers. San Diego is served by San Diego International Airport (SAN). Bus line 992 by MTS offers bus rides to the city center. You can take them in front of terminals 1 and 2. Buses run every 25 minutes and operate between 5 am and 11 pm. You can also take the light rail with the green, blue, or orange line. You can also catch a taxi from Transportation Plaza in SAN. Alternatively, you can rent a vehicle and drive to your destination. What are the benefits of the different airports in Seattle and San Diego Seattle has two airports: Seattle-Tacoma International Airport (SEA) and King County International Airport (KCIA). SEA is the only airport that provides passenger flights. SEA provides numerous flights to different destinations regularly. In addition, SEA lies near Seattle, offering numerous transfer options. The airport also features several passenger facilities, including ATMs, retail stores, and dining options. At BFI, only two airlines serve passengers, namely Kenmore Air and JSX. In San Diego, the main airport to land in is San Diego International Airport (SAN). The airport lies three miles from San Diego and operates 50 flights daily. It is the busiest airport in the area, with various services, dining, and retail options. The airport offers numerous flight options for domestic and international journeys. Which cities can you get to from San Diego Airport? You can travel to different cities from San Diego Airport (SAN). A two-hour drive can get you from SAN to Palm Springs. Trains and buses take longer, about six hours. Bus lines 2037 and F2056 can get you to Palm Springs. It boasts Chino Canyon, one of the steepest desert canyons in the country. It also features Morten Botanical Gardens, India Canyons, and several museums. From SAN, you can also get to Laguna Beach, a nearby city. You can drive car rentals from SAN or opt for public transport. You can take a bus from the airport's Terminal 1 to Old Town Transit Center. From here, the average train ride to San Juan Capistrano Amtrak Station, near Laguna Beach. A town car or taxi can get you to the city in less than an hour and a half. The city is popular for its boutiques and pristine beaches.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

Prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

The number of operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport is 8 as of November 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$92 Cheap Flights from Seattle to San Diego in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Seattle to San Diego

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:53 pm - 2:54 pmSEA-SAN

17h 01m1 stop

6:34 am - 11:53 amSAN-SEA

29h 19m1 stop

$167Frontier

Find Deal

Mon, Nov 24 - Sun, Dec 7

3:40 pm - 11:59 pmSEA-SAN

8h 19m1 stop

6:15 am - 9:33 amSAN-SEA

3h 18mnonstop

$169Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

11:43 am - 12:07 pmSEA-SAN

24h 24m2 stops

6:52 pm - 1:22 pmSAN-SEA

18h 30m1 stop

$170Frontier

Find Deal

Mon, Nov 17 - Mon, Nov 24

7:59 pm - 10:47 pmSEA-SAN

2h 48mnonstop

6:15 am - 2:38 pmSAN-SEA

8h 23m1 stop

$171Alaska Airlines

Find Deal

Thu, Dec 4 - Tue, Dec 9

7:59 pm - 10:47 pmSEA-SAN

2h 48mnonstop

10:26 am - 2:55 pmSAN-SEA

4h 29m1 stop

$172Alaska Airlines

Find Deal

Fri, Dec 5 - Sat, Dec 13

7:10 am - 10:06 amSEA-SAN

2h 56mnonstop

5:15 pm - 8:29 pmSAN-SEA

3h 14mnonstop

$178Delta

Find Deal

Mon, Nov 24 - Sat, Dec 6

2:05 pm - 9:50 pmSEA-SAN

7h 45m1 stop

2:20 pm - 9:50 pmSAN-SEA

7h 30m2 stops

$179Southwest

Find Deal

Thu, Jan 8 - Mon, Jan 12

10:15 am - 5:55 pmSEA-SAN

7h 40m2 stops

3:15 pm - 10:55 pmSAN-SEA

7h 40m1 stop

$183Southwest

Find Deal

Sat, Dec 6 - Tue, Dec 9

7:10 am - 8:18 pmSEA-SAN

13h 08m1 stop

6:30 pm - 9:43 pmSAN-SEA

3h 13mnonstop

$185Hawaiian Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

7:10 am - 10:08 amSEA-SAN

2h 58mnonstop

6:30 am - 9:53 amSAN-SEA

3h 23mnonstop

$187Delta

Find Deal

Fri, Dec 19 - Wed, Dec 24

Southwest flights from Seattle to San Diego

Our best Southwest deals on Seattle to San Diego flight tickets

Southwest

Jan 8

SEA2:05 pmSeattle/Tacoma Intl

7h 45m

1 stop

SAN9:50 pmSan Diego

Jan 12

SAN2:20 pmSan Diego

7h 30m

2 stops

SEA9:50 pmSeattle/Tacoma Intl

$179

Find similar

Southwest

Dec 6

SEA10:15 amSeattle/Tacoma Intl

7h 40m

2 stops

SAN5:55 pmSan Diego

Dec 9

SAN3:15 pmSan Diego

7h 40m

1 stop

SEA10:55 pmSeattle/Tacoma Intl

$183

Find similar

Southwest

Nov 14

SEA7:10 amSeattle/Tacoma Intl

5h 45m

1 stop

SAN12:55 pmSan Diego

Nov 20

SAN6:30 amSan Diego

5h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

$229

Find similar

Frontier flights from Seattle to San Diego

Our best Frontier deals on Seattle to San Diego flight tickets

Frontier

Nov 24

SEA9:53 pmSeattle/Tacoma Intl

17h 01m

1 stop

SAN2:54 pmSan Diego

Dec 7

SAN6:34 amSan Diego

29h 19m

1 stop

SEA11:53 amSeattle/Tacoma Intl

$167

Find similar

Frontier

Nov 17

SEA11:43 amSeattle/Tacoma Intl

24h 24m

2 stops

SAN12:07 pmSan Diego

Nov 24

SAN6:52 pmSan Diego

18h 30m

1 stop

SEA1:22 pmSeattle/Tacoma Intl

$170

Find similar

Frontier

Nov 15

SEA12:58 pmSeattle/Tacoma Intl

9h 27m

1 stop

SAN10:25 pmSan Diego

Nov 25

SAN8:29 amSan Diego

8h 08m

1 stop

SEA4:37 pmSeattle/Tacoma Intl

$174

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 11/24

9:53 pm-2:54 pm

1 stop17h 01m

San Diego

Sun 12/7

6:34 am-11:53 am

1 stop29h 19m

$167

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 12/5

3:40 pm-11:59 pm

1 stop8h 19m

San Diego

Sun 12/7

6:15 am-9:33 am

Nonstop3h 18m

$169

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 11/17

11:43 am-12:07 pm

2 stops24h 24m

San Diego

Mon 11/24

6:52 pm-1:22 pm

1 stop18h 30m

$170

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 12/4

7:59 pm-10:47 pm

Nonstop2h 48m

San Diego

Tue 12/9

6:15 am-2:38 pm

1 stop8h 23m

$171

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 12/5

7:59 pm-10:47 pm

Nonstop2h 48m

San Diego

Sat 12/13

10:26 am-2:55 pm

1 stop4h 29m

$172

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 11/24

7:10 am-10:06 am

Nonstop2h 56m

San Diego

Sat 12/6

5:15 pm-8:29 pm

Nonstop3h 14m

$178

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 1/8

2:05 pm-9:50 pm

1 stop7h 45m

San Diego

Mon 1/12

2:20 pm-9:50 pm

2 stops7h 30m

$179

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 12/6

10:15 am-5:55 pm

2 stops7h 40m

San Diego

Tue 12/9

3:15 pm-10:55 pm

1 stop7h 40m

$183

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 12/2

7:10 am-8:18 pm

1 stop13h 08m

San Diego

Sat 12/6

6:30 pm-9:43 pm

Nonstop3h 13m

$185

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 12/19

7:10 am-10:08 am

Nonstop2h 58m

San Diego

Wed 12/24

6:30 am-9:53 am

Nonstop3h 23m

$187

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Layovers

Other information

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of September, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around $217.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Seattle to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $256. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $331. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $274. Flights at noon are often more expensive with an average ticket price of $356.

What is the cheapest Seattle/Tacoma Intl to San Diego flight route?

Fly from Seattle/Tacoma Intl to San Diego for the best Seattle/Tacoma Intl - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $271 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Seattle for as low as $221 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to San Diego flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to San Diego flights?

No. A direct flight is the cheapest option for a flight between Seattle to San Diego.

How have Seattle to San Diego flight prices changed over time?

As of November 2025, prices for Seattle to San Diego flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to San Diego (SEA to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Diego

Best Price Found	$138
Fastest flight time	2h 44m
Direct flights	Every day
Airports in San Diego	1 airport

The best one-way flight to San Diego from Seattle in the past 72 hours is $138. The best round-trip flight deal from Seattle to San Diego found on momondo in the last 72 hours is $222.

The fastest flight from Seattle to San Diego takes 2h 44m

Direct flights go from Seattle to San Diego every day.

There is 1 airport near San Diego: San Diego (SAN)

Search flight deals

How far is Seattle/Tacoma Intl to San Diego by plane?
The distance between Seattle/Tacoma Intl and San Diego is about 1063.7 mi. In terms of flight time, this usually takes a little over 2h 48m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?
Prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport is 8 as of November 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to San Diego?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to San Diego is Boeing 737-800 Passenger/BBJ2 (winglets) (23.82% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (18.61%), Boeing 737-900 Passenger/BBJ3 (winglets) (14.68%), and Boeing 737 (11.36%).
What is the most popular airline from Seattle to San Diego?
momondo data reveals that the most frequently booked airline on the route from Seattle to San Diego is Delta, representing 48% of all bookings. The subsequent popular airlines are Alaska Airlines at 41%, Hawaiian Airlines at 4%, and Frontier at 3%.

Best airlines flying from Seattle to San Diego

Compare and see reviews for airlines that fly from Seattle to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $71	Free Cancellation	Rating 6.3 8,114 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $104	Free Cancellation	Rating 5.8 3,116 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $133	Free Cancellation	Rating 7.8 2,804 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $137	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
Southwest	PriceFrom $156	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $156	Free Cancellation	Rating 8.0 11,243 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $207	Free Cancellation	Rating 7.4 9,003 reviews	Search United Airlines flights
American Airlines	PriceFrom $226	Free Cancellation	Rating 7.2 11,041 reviews	Search American Airlines flights

Southwest Flights From Seattle to San Diego
Southwest operates around 12 flights from Seattle to San Diego every week. The average price of these flights found in the last 72 hours has been $275, but momondo users have found Southwest deals from Seattle to San Diego from as low as $156 round-trip. Southwest has been scored 8.0/10 in 4,240 reviews.
Alaska Airlines Flights From Seattle to San Diego
$156 is the best Alaska Airlines flight deal from Seattle to San Diego found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $324, however, with flight time and availability significantly affecting the price. Alaska Airlines (8.0/10 from 11,243 user reviews) flies into San Diego from Seattle 17 times in an average week so prices can vary.

Coronado

Chula Vista

El Cajon

Julian

National City

Imperial Beach

La Mesa

Poway

Borrego Springs

San Ysidro

Lemon Grove

Alpine

Santee

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to San Diego with flexible booking policies on momondo?

Flights from Seattle to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to San Diego?

Once you have performed a search for Seattle to San Diego flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Seattle to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 12/6

Sat 12/13

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing California

Popular cities in the United States

Flights to New Yorkfrom $44

Flights to Los Angelesfrom $49

Flights to Miamifrom $49

Flights to Chicagofrom $54

Flights to Orlandofrom $49

Flights to Las Vegasfrom $42

Flights to San Franciscofrom $57

Flights to Washington, D.C.from $49

Flights to Bostonfrom $49

Flights to Atlantafrom $40

Flights to Dallasfrom $59

Flights to Seattlefrom $58

Fly to other destinations from Seattle

Flights from Seattle/Tacoma Intl to Santa Rosa Sonoma County

Flights from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl

Flights from Seattle/Tacoma Intl to Portland

Flights from Seattle/Tacoma Intl to Spokane

Flights from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl

Flights from Seattle/Tacoma Intl to Oakland

Cheap flights from Seattle to San Diego from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Diego departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to San Diego

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Southwest flights from Seattle to San Diego

Our best Southwest deals on Seattle to San Diego flight tickets

Frontier flights from Seattle to San Diego

Our best Frontier deals on Seattle to San Diego flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to San Diego that are best for you.

See travel insights to San Diego from

How to get the cheapest flight ticket from Seattle to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of September, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around $217.

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $274. Flights at noon are often more expensive with an average ticket price of $356.

What is the cheapest Seattle/Tacoma Intl to San Diego flight route?

Fly from Seattle/Tacoma Intl to San Diego for the best Seattle/Tacoma Intl - San Diego flight prices

How far in advance should I book a flight to San Diego?

What cabin class options are available on Seattle/Tacoma Intl to San Diego flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to San Diego flights?

No. A direct flight is the cheapest option for a flight between Seattle to San Diego.

How have Seattle to San Diego flight prices changed over time?

As of November 2025, prices for Seattle to San Diego flights are approximately 13% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Diego?

Alaska Airlines, United Airlines, and Frontier are the most popular carriers operating from Seattle/Tacoma Intl to San Diego

What airlines fly to San Diego?

How often are flights from Seattle to San Diego delayed?

Historically, on average around 15% of flights between Seattle and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

What is the most punctual flight time for Seattle to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seattle to San Diego flights?

According to our data, China Airlines have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Seattle and San Diego?

Las Vegas (LAS) was the most common stop: 73% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $169.

Which layover airport has the shortest travel time from Seattle to San Diego?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 8h 08m.

Which layover airport has the shortest connection time from Seattle to San Diego?

Las Vegas (LAS) has the shortest average layover time for this route: 5h 27m.

How many flights depart from Seattle to San Diego on average per day?

As of November 2025, 22 flights take off from Seattle and land in San Diego each day. The most common flight departure time for this route is 8:00PM, with 44% of daily flights taking off in the evening.

How many flights depart from Seattle to San Diego on average per week?

The number of flights available between Seattle and San Diego is 158 per week as of November 2025. The most frequent departure day is Thu, with 30% of weekly flights leaving on this day.

When to book flights from Seattle to San Diego

Cheap Seattle to San Diego (SEA to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Diego

Best Price Found

Fastest flight time

Direct flights

Airports in San Diego

How far is Seattle/Tacoma Intl to San Diego by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?

What documentation or ID do you need to fly to San Diego Airport?

What is the most popular plane model from Seattle to San Diego?

What is the most popular airline from Seattle to San Diego?

Best airlines flying from Seattle to San Diego

Compare and see reviews for airlines that fly from Seattle to San Diego with momondo

Southwest Flights From Seattle to San Diego

Alaska Airlines Flights From Seattle to San Diego

Traveling to a place near San Diego?