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Cheap flights from San Diego to Seattle from $106

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 10/16. 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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Find the cheapest flights from San Diego to Seattle

Cheap round-trip flights

Frontier Logo
12:04 pm - 12:30 amSAN-SEA
12h 26m1 stop
Frontier Logo
1:47 pm - 11:17 pmSEA-SAN
9h 30m1 stop
$156Frontier
Find Deal
Thu, Sep 4 - Mon, Sep 15
Hawaiian Airlines Logo
7:15 am - 10:20 amSAN-SEA
3h 05mnonstop
Hawaiian Airlines Logo
8:59 pm - 11:53 pmSEA-SAN
2h 54mnonstop
$158Hawaiian Airlines
Find Deal
Sat, Sep 13 - Tue, Sep 16
Alaska Airlines Logo
8:15 am - 11:25 amSAN-SEA
3h 10mnonstop
Alaska Airlines Logo
2:51 pm - 9:40 pmSEA-SAN
6h 49m1 stop
$161Alaska Airlines
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Sat, Sep 27 - Sat, Sep 27
Logo
6:25 am - 3:45 pmSAN-SEA
9h 20m1 stop
Logo
1:47 pm - 10:26 pmSEA-SAN
8h 39m1 stop
$162
Find Deal
Fri, Sep 26 - Mon, Sep 29
Alaska Airlines Logo
8:21 pm - 5:09 pmSAN-SEA
20h 48m1 stop
Alaska Airlines Logo
8:59 pm - 11:53 pmSEA-SAN
2h 54mnonstop
$167Alaska Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 16
Logo
6:15 am - 3:45 pmSAN-SEA
9h 30m1 stop
Logo
1:22 pm - 7:26 amSEA-SAN
18h 04m1 stop
$169
Find Deal
Fri, Sep 19 - Sun, Oct 5
Delta Logo
3:35 pm - 6:32 pmSAN-SEA
2h 57mnonstop
Delta Logo
11:40 am - 2:35 pmSEA-SAN
2h 55mnonstop
$177Delta
Find Deal
Wed, Sep 24 - Sat, Sep 27
Delta Logo
1:59 pm - 4:59 pmSAN-SEA
3h 00mnonstop
Delta Logo
7:10 am - 9:58 amSEA-SAN
2h 48mnonstop
$188Delta
Find Deal
Sat, Sep 13 - Sun, Sep 14
Southwest Logo
7:00 am - 11:35 amSAN-SEA
4h 35m1 stop
Southwest Logo
2:25 pm - 8:30 pmSEA-SAN
6h 05m1 stop
$192Southwest
Find Deal
Thu, Sep 25 - Tue, Sep 30
Southwest Logo
2:00 pm - 8:15 pmSAN-SEA
6h 15m1 stop
Southwest Logo
6:15 am - 1:35 pmSEA-SAN
7h 20m2 stops
$202Southwest
Find Deal
Sat, Nov 8 - Tue, Nov 11

Frontier flights from San Diego to Seattle

Our best Frontier deals on San Diego to Seattle flight tickets
Frontier
Sep 4
SAN12:04 pmSan Diego
12h 26m
1 stop
SEA12:30 amSeattle/Tacoma Intl
Sep 15
SEA1:47 pmSeattle/Tacoma Intl
9h 30m
1 stop
SAN11:17 pmSan Diego
$156
Find similar
Frontier
Sep 26
SAN6:25 amSan Diego
9h 20m
1 stop
SEA3:45 pmSeattle/Tacoma Intl
Oct 1
SEA7:00 amSeattle/Tacoma Intl
15h 24m
1 stop
SAN10:24 pmSan Diego
$163
Find similar
Frontier
Sep 5
SAN6:25 amSan Diego
9h 20m
1 stop
SEA3:45 pmSeattle/Tacoma Intl
Sep 5
SEA8:31 pmSeattle/Tacoma Intl
12h 55m
1 stop
SAN9:26 amSan Diego
$166
Find similar

Hawaiian Airlines flights from San Diego to Seattle

Our best Hawaiian Airlines deals on San Diego to Seattle flight tickets
Hawaiian Airlines
Sep 13
SAN7:15 amSan Diego
3h 05m
SEA10:20 amSeattle/Tacoma Intl
Sep 16
SEA8:59 pmSeattle/Tacoma Intl
2h 54m
SAN11:53 pmSan Diego
$158
Find similar
Hawaiian Airlines
Oct 4
SAN6:25 pmSan Diego
3h 07m
SEA9:32 pmSeattle/Tacoma Intl
Oct 11
SEA8:10 pmSeattle/Tacoma Intl
2h 55m
SAN11:05 pmSan Diego
$159
Find similar
Hawaiian Airlines
Oct 4
SAN1:52 pmSan Diego
4h 58m
1 stop
SEA6:50 pmSeattle/Tacoma Intl
Oct 11
SEA8:10 pmSeattle/Tacoma Intl
2h 55m
SAN11:05 pmSan Diego
$168
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 August 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

Thu 9/4

12:04 pm-12:30 am

1 stop12h 26m

Seattle/Tacoma Intl

Mon 9/15

1:47 pm-11:17 pm

1 stop9h 30m

$156

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 9/13

7:15 am-10:20 am

Nonstop3h 05m

Seattle/Tacoma Intl

Tue 9/16

8:59 pm-11:53 pm

Nonstop2h 54m

$158

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 9/27

8:15 am-11:25 am

Nonstop3h 10m

Seattle/Tacoma Intl

Sat 9/27

2:51 pm-9:40 pm

1 stop6h 49m

$161

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 9/26

6:25 am-3:45 pm

1 stop9h 20m

Seattle/Tacoma Intl

Mon 9/29

1:47 pm-10:26 pm

1 stop8h 39m

$162

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Mon 9/15

8:21 pm-5:09 pm

1 stop20h 48m

Seattle/Tacoma Intl

Tue 9/16

8:59 pm-11:53 pm

Nonstop2h 54m

$167

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 9/19

6:15 am-3:45 pm

1 stop9h 30m

Seattle/Tacoma Intl

Sun 10/5

1:22 pm-7:26 am

1 stop18h 04m

$169

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 9/24

3:35 pm-6:32 pm

Nonstop2h 57m

Seattle/Tacoma Intl

Sat 9/27

11:40 am-2:35 pm

Nonstop2h 55m

$177

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 9/13

1:59 pm-4:59 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Sun 9/14

7:10 am-9:58 am

Nonstop2h 48m

$188

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 9/25

7:00 am-11:35 am

1 stop4h 35m

Seattle/Tacoma Intl

Tue 9/30

2:25 pm-8:30 pm

1 stop6h 05m

$192

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 11/8

2:00 pm-8:15 pm

1 stop6h 15m

Seattle/Tacoma Intl

Tue 11/11

6:15 am-1:35 pm

2 stops7h 20m

$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 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 $177.

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 $575.

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 $331 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $416. 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 $236 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 $197 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 August 2025, prices for San Diego to Seattle flights are approximately 15% cheaper 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

$153

Fastest flight time

2h 53m

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 $153. The best round-trip flight deal from San Diego to Seattle found on momondo in the last 72 hours is $221.
The fastest flight from San Diego to Seattle takes 2h 53m
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 2h 57m 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 $67Free CancellationRating
6.3
8,034 reviews
Search Spirit Airlines flights
FrontierPriceFrom $99Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
American AirlinesPriceFrom $113Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $117Free CancellationRating
7.9
7,983 reviews
Search Delta flights
Alaska AirlinesPriceFrom $143Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $166Free CancellationRating
7.8
2,670 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $176Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights

  • Alaska Airlines Flights From San Diego to Seattle

    Across 14 Alaska Airlines flights from San Diego to Seattle this week, the average price was $273, with the best Alaska Airlines deals starting from $143 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, 4,246 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
Olympia
Renton
Kent
Lynnwood
Federal Way
Marysville
Puyallup
Tukwila
Kirkland
Lakewood
Centralia
Cle Elum
Shoreline
Fife
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
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