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Cheap flights from San Diego to Seattle from $89

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 12/22. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:38 pm - 8:18 amSAN-SEA
11h 40m1 stop
Frontier Logo
2:22 pm - 11:50 pmSEA-SAN
9h 28m1 stop
$156Frontier
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Sun, Nov 9 - Fri, Nov 14
Frontier Logo
8:00 am - 8:18 amSAN-SEA
24h 18m1 stop
Frontier Logo
12:58 pm - 12:07 pmSEA-SAN
23h 09m2 stops
$157Frontier
Find Deal
Sat, Nov 8 - Mon, Nov 10
Alaska Airlines Logo
8:00 am - 9:11 amSAN-SEA
25h 11m1 stop
Alaska Airlines Logo
8:40 pm - 9:32 amSEA-SAN
12h 52m1 stop
$160Alaska Airlines
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Fri, Jan 16 - Mon, Jan 19
Alaska Airlines Logo
6:15 am - 11:24 amSAN-SEA
5h 09m1 stop
Alaska Airlines Logo
6:06 pm - 8:57 pmSEA-SAN
2h 51mnonstop
$169Alaska Airlines
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Fri, Dec 5 - Mon, Dec 8
Hawaiian Airlines Logo
5:08 pm - 10:58 pmSAN-SEA
5h 50m1 stop
Hawaiian Airlines Logo
8:05 pm - 6:30 amSEA-SAN
10h 25m1 stop
$171Hawaiian Airlines
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Sat, Nov 22 - Sun, Nov 23
Hawaiian Airlines Logo
6:15 am - 9:25 amSAN-SEA
3h 10mnonstop
Hawaiian Airlines Logo
2:02 pm - 7:12 pmSEA-SAN
5h 10m1 stop
$173Hawaiian Airlines
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Wed, Nov 12 - Tue, Nov 18
Delta Logo
6:15 am - 9:35 amSAN-SEA
3h 20mnonstop
Delta Logo
7:55 pm - 10:45 pmSEA-SAN
2h 50mnonstop
$177Delta
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Wed, Nov 19 - Tue, Dec 2
Southwest Logo
2:15 pm - 6:50 pmSAN-SEA
4h 35m1 stop
Southwest Logo
6:15 am - 11:10 amSEA-SAN
4h 55m1 stop
$184Southwest
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Thu, Feb 26 - Sun, Mar 1
Delta Logo
6:25 am - 9:45 amSAN-SEA
3h 20mnonstop
Delta Logo
7:55 pm - 10:45 pmSEA-SAN
2h 50mnonstop
$187Delta
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Thu, Nov 27 - Tue, Dec 2
Southwest Logo
6:20 am - 2:25 pmSAN-SEA
8h 05m2 stops
Southwest Logo
5:15 am - 12:00 pmSEA-SAN
6h 45m2 stops
$194Southwest
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Tue, Dec 9 - Sat, Jan 3

Alaska Airlines flights from San Diego to Seattle

Our best Alaska Airlines deals on San Diego to Seattle flight tickets
Alaska Airlines
Jan 16
SAN8:00 amSan Diego
25h 11m
1 stop
SEA9:11 amSeattle/Tacoma Intl
Jan 19
SEA8:40 pmSeattle/Tacoma Intl
12h 52m
1 stop
SAN9:32 amSan Diego
$160
Find similar
Alaska Airlines
Dec 5
SAN6:15 amSan Diego
5h 09m
1 stop
SEA11:24 amSeattle/Tacoma Intl
Dec 8
SEA6:06 pmSeattle/Tacoma Intl
2h 51m
SAN8:57 pmSan Diego
$169
Find similar
Alaska Airlines
Nov 17
SAN8:15 amSan Diego
7h 06m
1 stop
SEA3:21 pmSeattle/Tacoma Intl
Nov 17
SEA6:05 pmSeattle/Tacoma Intl
2h 51m
SAN8:56 pmSan Diego
$180
Find similar

Southwest flights from San Diego to Seattle

Our best Southwest deals on San Diego to Seattle flight tickets
Southwest
Feb 26
SAN2:15 pmSan Diego
4h 35m
1 stop
SEA6:50 pmSeattle/Tacoma Intl
Mar 1
SEA6:15 amSeattle/Tacoma Intl
4h 55m
1 stop
SAN11:10 amSan Diego
$184
Find similar
Southwest
Dec 9
SAN6:20 amSan Diego
8h 05m
2 stops
SEA2:25 pmSeattle/Tacoma Intl
Jan 3
SEA5:15 amSeattle/Tacoma Intl
6h 45m
2 stops
SAN12:00 pmSan Diego
$194
Find similar
Southwest
Jan 23
SAN1:00 pmSan Diego
7h 20m
2 stops
SEA8:20 pmSeattle/Tacoma Intl
Jan 27
SEA6:05 amSeattle/Tacoma Intl
10h 40m
2 stops
SAN4:45 pmSan Diego
$198
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 October 21, 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

Sun 11/9

8:38 pm-8:18 am

1 stop11h 40m

Seattle/Tacoma Intl

Fri 11/14

2:22 pm-11:50 pm

1 stop9h 28m

$156

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 11/8

8:00 am-8:18 am

1 stop24h 18m

Seattle/Tacoma Intl

Mon 11/10

12:58 pm-12:07 pm

2 stops23h 09m

$157

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 1/16

8:00 am-9:11 am

1 stop25h 11m

Seattle/Tacoma Intl

Mon 1/19

8:40 pm-9:32 am

1 stop12h 52m

$160

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 12/5

6:15 am-11:24 am

1 stop5h 09m

Seattle/Tacoma Intl

Mon 12/8

6:06 pm-8:57 pm

Nonstop2h 51m

$169

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 11/22

5:08 pm-10:58 pm

1 stop5h 50m

Seattle/Tacoma Intl

Sun 11/23

8:05 pm-6:30 am

1 stop10h 25m

$171

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 11/12

6:15 am-9:25 am

Nonstop3h 10m

Seattle/Tacoma Intl

Tue 11/18

2:02 pm-7:12 pm

1 stop5h 10m

$173

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 11/19

6:15 am-9:35 am

Nonstop3h 20m

Seattle/Tacoma Intl

Tue 12/2

7:55 pm-10:45 pm

Nonstop2h 50m

$177

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 2/26

2:15 pm-6:50 pm

1 stop4h 35m

Seattle/Tacoma Intl

Sun 3/1

6:15 am-11:10 am

1 stop4h 55m

$184

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 11/27

6:25 am-9:45 am

Nonstop3h 20m

Seattle/Tacoma Intl

Tue 12/2

7:55 pm-10:45 pm

Nonstop2h 50m

$187

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Tue 12/9

6:20 am-2:25 pm

2 stops8h 05m

Seattle/Tacoma Intl

Sat 1/3

5:15 am-12:00 pm

2 stops6h 45m

$194

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 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 $176. If you don’t want to visit Seattle in January, then you should wait until February to fly from San Diego, when ticket prices are also cheap, with an average price of $216.

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 $331. 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 $556.

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 $345 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $429. Departure times at noon 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 $246 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 $204 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.

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

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

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

As of October 2025, prices for San Diego to Seattle flights are approximately 50% 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

$157

Fastest flight time

2h 56m

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 $157. The best round-trip flight deal from San Diego to Seattle found on momondo in the last 72 hours is $265.
The fastest flight from San Diego to Seattle takes 2h 56m
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 10m 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
8,095 reviews
Search Spirit Airlines flights
FrontierPriceFrom $100Free CancellationRating
5.8
3,129 reviews
Search Frontier flights
American AirlinesPriceFrom $113Free CancellationRating
7.2
11,023 reviews
Search American Airlines flights
DeltaPriceFrom $137Free CancellationRating
7.9
7,978 reviews
Search Delta flights
Alaska AirlinesPriceFrom $148Free CancellationRating
8.0
11,137 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $159Free CancellationRating
7.8
2,786 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $166Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
8,989 reviews
Search United Airlines flights

  • Alaska Airlines Flights From San Diego to Seattle

    Across 12 Alaska Airlines flights from San Diego to Seattle this week, the average price was $278, with the best Alaska Airlines deals starting from $148 round-trip. 11,137 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, 4,235 ratings). Southwest flies from San Diego to Seattle around 7 times per week, with deals starting from $166 round-trip and rising to an average price of around $299.

Traveling to a place near Seattle?

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