Cheap Flights from Seattle (SEA) to San Diego (SAN) from HK$929~

View HK$929 flight on Thu, 23 Apr 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at HK$929 for one-way flights and HK$1,623 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 7 Apr - Wed, 8 Apr
SEA
Seattle
SAN
San Diego
HK$1,623 Return, found 1 day ago
HK$1,623
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 7 Apr from Seattle to San Diego, returning Wed, 8 Apr, priced at HK$1,623 found 1 day ago
Alaska Airlines
Tue, 7 Apr - Tue, 14 Apr
SEA
Seattle
SAN
San Diego
HK$1,701 Return, found 1 day ago
HK$1,701
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 7 Apr from Seattle to San Diego, returning Tue, 14 Apr, priced at HK$1,701 found 1 day ago
Delta
Thu, 23 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
HK$1,857 Return, found 3 days ago
HK$1,857
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at HK$1,857 found 3 days ago
Alaska Airlines
Tue, 7 Apr - Thu, 9 Apr
SEA
Seattle
SAN
San Diego
HK$1,935 Return, found 1 day ago
HK$1,935
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 7 Apr from Seattle to San Diego, returning Thu, 9 Apr, priced at HK$1,935 found 1 day ago
United
Thu, 23 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
HK$1,936 Return, found 3 days ago
HK$1,936
Return
found 3 days ago
Select United flight, departing Thu, 23 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at HK$1,936 found 3 days ago
American Airlines
Thu, 23 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
HK$2,094 Return, found 3 days ago
HK$2,094
Return
found 3 days ago
Select American Airlines flight, departing Thu, 23 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at HK$2,094 found 3 days ago
Alaska Airlines
Mon, 6 Apr - Tue, 14 Apr
SEA
Seattle
SAN
San Diego
HK$2,171 Return, found 1 day ago
HK$2,171
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 6 Apr from Seattle to San Diego, returning Tue, 14 Apr, priced at HK$2,171 found 1 day ago
Delta
Thu, 23 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
HK$2,269 Return, found 3 days ago
HK$2,269
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at HK$2,269 found 3 days ago
Alaska Airlines
Tue, 7 Apr - Mon, 13 Apr
SEA
Seattle
SAN
San Diego
HK$2,322 Return, found 1 day ago
HK$2,322
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 7 Apr from Seattle to San Diego, returning Mon, 13 Apr, priced at HK$2,322 found 1 day ago
Delta
Thu, 23 Apr - Mon, 27 Apr
SEA
Seattle
SAN
San Diego
HK$2,330 Return, found 3 days ago
HK$2,330
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Apr from Seattle to San Diego, returning Mon, 27 Apr, priced at HK$2,330 found 3 days ago

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

January is typically the cheapest month to fly

From HK$677 - HK$1,176 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 HK$1,623. 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 canceled 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 kilometers. 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.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
HK$1,623
Distance
1681 km
Average flight time
2 hours 47 mins

Book with confidence

Flights from Seattle to San Diego

Book cheap flights from Seattle (SEA) to San Diego (SAN) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Seattle (SEA) to San Diego (SAN) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle (SEA) to San Diego (SAN) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your San Diego flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in San Diego and things to do in San Diego for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to San Diego more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to San Diego is HK$929 now!

 

Flights from Seattle to San Diego

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