Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Diego to Seattle from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Seattle departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Diego to Seattle

Cheap round-trip flights

Alaska Airlines Logo
5:25 pm - 8:34 pmSAN-SEA
3h 09mnonstop
Alaska Airlines Logo
11:50 am - 2:47 pmSEA-SAN
2h 57mnonstop
$161Alaska Airlines
Find Deal
mié., oct. 29 - sáb., nov. 15
Southwest Logo
3:35 pm - 10:00 pmSAN-SEA
6h 25m2 stops
Southwest Logo
6:15 am - 12:30 pmSEA-SAN
6h 15m1 stop
$162Southwest
Find Deal
mar., oct. 7 - mié., oct. 8
Multiple Airlines Logo
1:52 pm - 6:50 pmSAN-SEA
4h 58m1 stop
Multiple Airlines Logo
10:16 am - 6:48 pmSEA-SAN
8h 32m1 stop
$166Multiple Airlines
Find Deal
sáb., oct. 18 - lun., oct. 20
Frontier Logo
6:00 pm - 12:13 pmSAN-SEA
18h 13m1 stop
Frontier Logo
7:17 pm - 12:35 pmSEA-SAN
17h 18m1 stop
$168Frontier
Find Deal
jue., oct. 30 - jue., nov. 6
Frontier Logo
7:15 am - 8:39 pmSAN-SEA
13h 24m1 stop
Frontier Logo
6:12 am - 8:07 pmSEA-SAN
13h 55m1 stop
$169Frontier
Find Deal
sáb., sep. 27 - jue., oct. 2
Hawaiian Airlines Logo
1:52 pm - 6:50 pmSAN-SEA
4h 58m1 stop
Hawaiian Airlines Logo
8:10 pm - 11:05 pmSEA-SAN
2h 55mnonstop
$176Hawaiian Airlines
Find Deal
sáb., oct. 18 - lun., oct. 20
Delta Logo
3:15 pm - 6:19 pmSAN-SEA
3h 04mnonstop
Delta Logo
7:45 pm - 10:31 pmSEA-SAN
2h 46mnonstop
$177Delta
Find Deal
mié., oct. 15 - sáb., oct. 18
Hawaiian Airlines Logo
8:15 am - 3:21 pmSAN-SEA
7h 06m1 stop
Hawaiian Airlines Logo
8:07 pm - 10:59 pmSEA-SAN
2h 52mnonstop
$178Hawaiian Airlines
Find Deal
sáb., nov. 1 - sáb., nov. 8
United Airlines Logo
11:08 am - 9:15 pmSAN-SEA
10h 07m2 stops
United Airlines Logo
7:37 pm - 12:15 amSEA-SAN
4h 38m1 stop
$182United Airlines
Find Deal
sáb., oct. 18 - sáb., oct. 25
Delta Logo
7:05 pm - 10:18 pmSAN-SEA
3h 13mnonstop
Delta Logo
7:45 pm - 10:31 pmSEA-SAN
2h 46mnonstop
$187Delta
Find Deal
vie., oct. 10 - sáb., oct. 11

Hawaiian Airlines flights from San Diego to Seattle

Our best Hawaiian Airlines deals on San Diego to Seattle flight tickets
Hawaiian Airlines
Oct 18
SAN1:52 pmSan Diego
4h 58m
1 stop
SEA6:50 pmSeattle/Tacoma Intl
Oct 20
SEA8:10 pmSeattle/Tacoma Intl
2h 55m
SAN11:05 pmSan Diego
$176
Find similar
Hawaiian Airlines
Nov 1
SAN8:15 amSan Diego
7h 06m
1 stop
SEA3:21 pmSeattle/Tacoma Intl
Nov 8
SEA8:07 pmSeattle/Tacoma Intl
2h 52m
SAN10:59 pmSan Diego
$178
Find similar
Hawaiian Airlines
Oct 14
SAN6:25 pmSan Diego
3h 07m
SEA9:32 pmSeattle/Tacoma Intl
Oct 21
SEA8:50 amSeattle/Tacoma Intl
5h 27m
1 stop
SAN2:17 pmSan Diego
$179
Find similar

Frontier flights from San Diego to Seattle

Our best Frontier deals on San Diego to Seattle flight tickets
Frontier
Sep 25
SAN6:25 amSan Diego
9h 06m
1 stop
SEA3:31 pmSeattle/Tacoma Intl
Sep 27
SEA7:00 amSeattle/Tacoma Intl
15h 24m
1 stop
SAN10:24 pmSan Diego
$163
Find similar
Frontier
Oct 30
SAN6:00 pmSan Diego
18h 13m
1 stop
SEA12:13 pmSeattle/Tacoma Intl
Nov 6
SEA7:17 pmSeattle/Tacoma Intl
17h 18m
1 stop
SAN12:35 pmSan Diego
$168
Find similar
Frontier
Sep 27
SAN7:15 amSan Diego
13h 24m
1 stop
SEA8:39 pmSeattle/Tacoma Intl
Oct 2
SEA6:12 amSeattle/Tacoma Intl
13h 55m
1 stop
SAN8:07 pmSan Diego
$169
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Seattle 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 septiembre 17, 2025.
Use the filters below to find and compare flights from San Diego to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mié. 10/29

5:25 pm-8:34 pm

Nonstop3h 09m

Seattle/Tacoma Intl

sáb. 11/15

11:50 am-2:47 pm

Nonstop2h 57m

$161

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 10/7

3:35 pm-10:00 pm

2 stops6h 25m

Seattle/Tacoma Intl

mié. 10/8

6:15 am-12:30 pm

1 stop6h 15m

$162

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

sáb. 10/18

1:52 pm-6:50 pm

1 stop4h 58m

Seattle/Tacoma Intl

lun. 10/20

10:16 am-6:48 pm

1 stop8h 32m

$166

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

jue. 10/30

6:00 pm-12:13 pm

1 stop18h 13m

Seattle/Tacoma Intl

jue. 11/6

7:17 pm-12:35 pm

1 stop17h 18m

$168

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

sáb. 9/27

7:15 am-8:39 pm

1 stop13h 24m

Seattle/Tacoma Intl

jue. 10/2

6:12 am-8:07 pm

1 stop13h 55m

$169

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

sáb. 10/18

1:52 pm-6:50 pm

1 stop4h 58m

Seattle/Tacoma Intl

lun. 10/20

8:10 pm-11:05 pm

Nonstop2h 55m

$176

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mié. 10/15

3:15 pm-6:19 pm

Nonstop3h 04m

Seattle/Tacoma Intl

sáb. 10/18

7:45 pm-10:31 pm

Nonstop2h 46m

$177

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

sáb. 11/1

8:15 am-3:21 pm

1 stop7h 06m

Seattle/Tacoma Intl

sáb. 11/8

8:07 pm-10:59 pm

Nonstop2h 52m

$178

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

sáb. 10/18

11:08 am-9:15 pm

2 stops10h 07m

Seattle/Tacoma Intl

sáb. 10/25

7:37 pm-12:15 am

1 stop4h 38m

$182

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

vie. 10/10

7:05 pm-10:18 pm

Nonstop3h 13m

Seattle/Tacoma Intl

sáb. 10/11

7:45 pm-10:31 pm

Nonstop2h 46m

$187

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

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

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 Seattle?

In general, January is the cheapest month to fly from San Diego to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $166. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Diego, when ticket prices are also cheap, with an average price of $197.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from San Diego is on a Thursday. momondo users have found tickets for Thursday departures for as low as $326. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $566.

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

Flying to Seattle from San Diego in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $338 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $418. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $242 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Diego for as low as $201 on momondo.

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

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

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

As of September 2025, prices for San Diego to Seattle flights are approximately 12% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to Seattle

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

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

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

Best Price Found

$162

Fastest flight time

3h 03m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from San Diego in the past 72 hours is $162. The best round-trip flight deal from San Diego to Seattle found on momondo in the last 72 hours is $232.
The fastest flight from San Diego to Seattle takes 3h 03m
Direct flights go from San Diego to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

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

    The straight-line distance from San Diego to Seattle/Tacoma Intl is 1063.7 mi. Typically, this will take 3h 04m by plane in normal conditions.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from San Diego to Seattle

Compare and see reviews for airlines that fly from San Diego to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $66Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
FrontierPriceFrom $99Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
American AirlinesPriceFrom $113Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $127Free CancellationRating
7.9
7,961 reviews
Search Delta flights
Alaska AirlinesPriceFrom $151Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $164Free CancellationRating
7.8
2,729 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $176Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

  • Alaska Airlines Flights From San Diego to Seattle

    Across 27 Alaska Airlines flights from San Diego to Seattle this week, the average price was $275, with the best Alaska Airlines deals starting from $151 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Southwest Flights From San Diego to Seattle

    Another popular option for San Diego to Seattle flights is Southwest (8.0/10, 4,242 ratings). Southwest flies from San Diego to Seattle around 12 times per week, with deals starting from $176 round-trip and rising to an average price of around $306.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Kirkland
Tukwila
Shoreline
Lakewood
Centralia
Fife
Cle Elum
Redmond
Westport

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Diego.

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

Yes. momondo allows you to filter the results for San Diego to Seattle flights to just show those with flexible booking policies.

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

Once you have performed a search for San Diego to Seattle 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 San Diego to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Seattle 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
vie. 10/17
vie. 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States