S$175 Cheap Flights from Seattle to San Diego

View S$175 flight on Wed, 15 Jul, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to San Diego Intl. Airport (SAN)

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Cheap Flights from Seattle to San Diego (SEA-SAN)

Prices were available within the past 7 days and start at S$175 for one-way flights and S$349 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 15 Jul - Tue, 21 Jul
SEA
Seattle
SAN
San Diego
S$349 Return, found 6 hours ago
S$349
Return
found 6 hours ago
Select United flight, departing Wed, 15 Jul from Seattle to San Diego, returning Tue, 21 Jul, priced at S$349 found 6 hours ago
Delta
Thu, 14 May - Mon, 18 May
SEA
Seattle
SAN
San Diego
S$357 Return, found 2 days ago
S$357
Return
found 2 days ago
Select Delta flight, departing Thu, 14 May from Seattle to San Diego, returning Mon, 18 May, priced at S$357 found 2 days ago
Delta
Wed, 15 Jul - Tue, 21 Jul
SEA
Seattle
SAN
San Diego
S$384 Return, found 6 hours ago
S$384
Return
found 6 hours ago
Select Delta flight, departing Wed, 15 Jul from Seattle to San Diego, returning Tue, 21 Jul, priced at S$384 found 6 hours ago
United
Wed, 15 Jul - Tue, 21 Jul
SEA
Seattle
SAN
San Diego
S$392 Return, found 6 hours ago
S$392
Return
found 6 hours ago
Select United flight, departing Wed, 15 Jul from Seattle to San Diego, returning Tue, 21 Jul, priced at S$392 found 6 hours ago
Delta
Thu, 14 May - Mon, 18 May
SEA
Seattle
SAN
San Diego
S$397 Return, found 2 days ago
S$397
Return
found 2 days ago
Select Delta flight, departing Thu, 14 May from Seattle to San Diego, returning Mon, 18 May, priced at S$397 found 2 days ago
Delta
Sun, 28 Jun - Mon, 6 Jul
SEA
Seattle
SAN
San Diego
S$413 Return, found 2 days ago
S$413
Return
found 2 days ago
Select Delta flight, departing Sun, 28 Jun from Seattle to San Diego, returning Mon, 6 Jul, priced at S$413 found 2 days ago
United
Wed, 15 Jul - Tue, 21 Jul
SEA
Seattle
SAN
San Diego
S$422 Return, found 6 hours ago
S$422
Return
found 6 hours ago
Select United flight, departing Wed, 15 Jul from Seattle to San Diego, returning Tue, 21 Jul, priced at S$422 found 6 hours ago
Delta
Sat, 25 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
S$430 Return, found 3 hours ago
S$430
Return
found 3 hours ago
Select Delta flight, departing Sat, 25 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at S$430 found 3 hours ago
American Airlines
Wed, 15 Jul - Tue, 21 Jul
SEA
Seattle
SAN
San Diego
S$450 Return, found 6 hours ago
S$450
Return
found 6 hours ago
Select American Airlines flight, departing Wed, 15 Jul from Seattle to San Diego, returning Tue, 21 Jul, priced at S$450 found 6 hours ago
Alaska Airlines
Wed, 15 Apr - Fri, 17 Apr
SEA
Seattle
SAN
San Diego
S$745 Return, found 4 days ago
S$745
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 15 Apr from Seattle to San Diego, returning Fri, 17 Apr, priced at S$745 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to San Diego (SAN)

May is typically the cheapest month to fly

From S$128 - S$295 per traveller.

Frequently asked questions

How much is a flight from SEA to San Diego Airport?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Seattle - Tacoma Intl. Airport (SEA) to San Diego Airport start from S$349. Book now to score the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to San Diego Intl. Airport (SAN)?
The majority of flights can be cancelled online, but whether you incur a fee varies between airlines. If you do have to cancel your break, follow the instructions in the Customer Service Portal.
How do I find cheap flights from SEA to San Diego Intl. Airport (SAN) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Seattle - Tacoma Intl. Airport (SEA) to SAN flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to SAN?
The flight distance from SEA to San Diego Intl. Airport (SAN) is 1,700 kilometres. Bring along a drink, a snack and a few good podcasts. Keep yourself entertained and the hours will fly by.
Which airlines fly direct from SEA to SAN?
There are several airlines that fly directly from Sea-Tac Airport to San Diego Intl. Airport (SAN). Alaska Airlines (AS) is a top choice, offering 225 flights on this route each month. If you want more options, check out the deals with Delta Air Lines (DL). This carrier operates 152 flights every month between these airports.
Are Seattle - Tacoma Intl. Airport (SEA) to SAN flight tickets cheaper when they're purchased at the last minute?
Tickets from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN) are available up to 12 months before departure on Expedia. And although you may occasionally score fantastic last-minute deals, it's not something you should count on. Also, booking your flights in advance means you'll have more choices — and you can avoid getting caught in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
San Diego Intl.
Return price
S$349
Distance
1681 km
Average flight time
2 hours 48 mins

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Perfect flights from Seattle to San Diego

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Experience the joy of finding cheap flights from Seattle - Tacoma Intl. to San Diego Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$175 and roundtrip prices from S$349*.
 

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Seattle to San Diego

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