Cheap flights from Seattle to San Diego from $93

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 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier Logo
1:25 pm - 8:24 pmSEA-SAN
6h 59m1 stop
Frontier Logo
7:21 pm - 1:54 pmSAN-SEA
18h 33m2 stops
$171Frontier
Find Deal
Sun, Dec 21 - Fri, Jan 2
Hawaiian Airlines Logo
9:20 pm - 12:10 amSEA-SAN
2h 50mnonstop
Hawaiian Airlines Logo
9:17 pm - 8:13 amSAN-SEA
10h 56m1 stop
$172Hawaiian Airlines
Find Deal
Sat, Nov 22 - Mon, Nov 24
Alaska Airlines Logo
7:59 pm - 10:47 pmSEA-SAN
2h 48mnonstop
Alaska Airlines Logo
7:10 am - 2:25 pmSAN-SEA
7h 15m1 stop
$173Alaska Airlines
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Sat, Dec 6 - Thu, Dec 11
Frontier Logo
12:58 pm - 11:50 pmSEA-SAN
10h 52m1 stop
Frontier Logo
6:41 am - 7:37 pmSAN-SEA
12h 56m2 stops
$174Frontier
Find Deal
Thu, Nov 13 - Sat, Nov 15
Delta Logo
7:10 am - 10:06 amSEA-SAN
2h 56mnonstop
Delta Logo
7:05 pm - 10:25 pmSAN-SEA
3h 20mnonstop
$177Delta
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Sat, Nov 15 - Wed, Nov 19
Alaska Airlines Logo
7:27 am - 12:27 pmSEA-SAN
5h 00m1 stop
Alaska Airlines Logo
7:10 am - 7:29 pmSAN-SEA
12h 19m1 stop
$183Alaska Airlines
Find Deal
Sun, Nov 23 - Fri, Dec 5
Southwest Logo
10:15 am - 5:55 pmSEA-SAN
7h 40m2 stops
Southwest Logo
9:30 am - 4:30 pmSAN-SEA
7h 00m1 stop
$185Southwest
Find Deal
Sat, Dec 6 - Thu, Dec 11
Delta Logo
7:10 am - 10:06 amSEA-SAN
2h 56mnonstop
Delta Logo
3:15 pm - 6:28 pmSAN-SEA
3h 13mnonstop
$187Delta
Find Deal
Thu, Nov 13 - Tue, Nov 18
Southwest Logo
10:15 am - 5:55 pmSEA-SAN
7h 40m2 stops
Southwest Logo
10:20 am - 6:40 pmSAN-SEA
8h 20m2 stops
$188Southwest
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Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
12:41 pm - 5:44 pmSEA-SAN
5h 03m1 stop
United Airlines Logo
6:15 am - 1:38 pmSAN-SEA
7h 23m2 stops
$202United Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19

Frontier flights from Seattle to San Diego

Our best Frontier deals on Seattle to San Diego flight tickets
Frontier
Dec 21
SEA1:25 pmSeattle/Tacoma Intl
6h 59m
1 stop
SAN8:24 pmSan Diego
Jan 2
SAN7:21 pmSan Diego
18h 33m
2 stops
SEA1:54 pmSeattle/Tacoma Intl
Frontier
Nov 13
SEA12:58 pmSeattle/Tacoma Intl
10h 52m
1 stop
SAN11:50 pmSan Diego
Nov 15
SAN6:41 amSan Diego
12h 56m
2 stops
SEA7:37 pmSeattle/Tacoma Intl
Frontier
Oct 31
SEA2:22 pmSeattle/Tacoma Intl
19h 05m
1 stop
SAN9:27 amSan Diego
Nov 4
SAN6:58 amSan Diego
29h 09m
1 stop
SEA12:07 pmSeattle/Tacoma Intl

Delta flights from Seattle to San Diego

Our best Delta deals on Seattle to San Diego flight tickets
Delta
Nov 15
SEA7:10 amSeattle/Tacoma Intl
2h 56m
SAN10:06 amSan Diego
Nov 19
SAN7:05 pmSan Diego
3h 20m
SEA10:25 pmSeattle/Tacoma Intl
Delta
Nov 13
SEA7:10 amSeattle/Tacoma Intl
2h 56m
SAN10:06 amSan Diego
Nov 18
SAN3:15 pmSan Diego
3h 13m
SEA6:28 pmSeattle/Tacoma Intl
Delta
Nov 22
SEA7:55 pmSeattle/Tacoma Intl
2h 52m
SAN10:47 pmSan Diego
Nov 25
SAN6:15 amSan Diego
3h 20m
SEA9:35 amSeattle/Tacoma Intl

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 24, 2025.
Use the filters below to find and compare flights from Seattle to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 12/21

1:25 pm-8:24 pm

1 stop6h 59m

San Diego

Fri 1/2

7:21 pm-1:54 pm

2 stops18h 33m

$171

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/22

9:20 pm-12:10 am

Nonstop2h 50m

San Diego

Mon 11/24

9:17 pm-8:13 am

1 stop10h 56m

$172

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 12/6

7:59 pm-10:47 pm

Nonstop2h 48m

San Diego

Thu 12/11

7:10 am-2:25 pm

1 stop7h 15m

$173

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 11/13

12:58 pm-11:50 pm

1 stop10h 52m

San Diego

Sat 11/15

6:41 am-7:37 pm

2 stops12h 56m

$174

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/15

7:10 am-10:06 am

Nonstop2h 56m

San Diego

Wed 11/19

7:05 pm-10:25 pm

Nonstop3h 20m

$177

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 11/23

7:27 am-12:27 pm

1 stop5h 00m

San Diego

Fri 12/5

7:10 am-7:29 pm

1 stop12h 19m

$183

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 12/6

10:15 am-5:55 pm

2 stops7h 40m

San Diego

Thu 12/11

9:30 am-4:30 pm

1 stop7h 00m

$185

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 11/13

7:10 am-10:06 am

Nonstop2h 56m

San Diego

Tue 11/18

3:15 pm-6:28 pm

Nonstop3h 13m

$187

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 12/6

10:15 am-5:55 pm

2 stops7h 40m

San Diego

Mon 12/8

10:20 am-6:40 pm

2 stops8h 20m

$188

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/15

12:41 pm-5:44 pm

1 stop5h 03m

San Diego

Wed 11/19

6:15 am-1:38 pm

2 stops7h 23m

$202

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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 $260. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $315. 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 $354.

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 October 2025, prices for Seattle to San Diego flights are approximately 21% more expensive 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

$118

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 $118. The best round-trip flight deal from Seattle to San Diego found on momondo in the last 72 hours is $223.
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)
  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $72Free CancellationRating
6.3
8,104 reviews
Search Spirit Airlines flights
FrontierPriceFrom $100Free CancellationRating
5.8
3,128 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $133Free CancellationRating
7.8
2,789 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $137Free CancellationRating
7.9
7,983 reviews
Search Delta flights
Alaska AirlinesPriceFrom $156Free CancellationRating
8.0
11,163 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $156Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $207Free CancellationRating
7.4
8,994 reviews
Search United Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
  • Alaska Airlines Flights From Seattle to San Diego

    Alaska Airlines operates around 8 flights from Seattle to San Diego every week. The average price of these flights found in the last 72 hours has been $322, but momondo users have found Alaska Airlines deals from Seattle to San Diego from as low as $156 round-trip. Alaska Airlines has been scored 8.0/10 in 11,163 reviews.

  • Southwest Flights From Seattle to San Diego

    $156 is the best Southwest flight deal from Seattle to San Diego found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $278, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,235 user reviews) flies into San Diego from Seattle 8 times in an average week so prices can vary.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
La Mesa
Imperial Beach
Poway
San Ysidro
Borrego Springs
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.

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1 adult
Sun 11/23
Sun 11/30

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