S$128 Cheap Flights from Seattle to San Diego

View S$128 flight on Sat, 4 Oct, 2025Opens 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$128 for one-way flights and S$203 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 19 Aug - Tue, 16 Sep
SEA
Seattle
SAN
San Diego
S$203 Return, found 5 days ago
S$203
Return
found 5 days ago
Select Delta flight, departing Tue, 19 Aug from Seattle to San Diego, returning Tue, 16 Sep, priced at S$203 found 5 days ago
Delta
Wed, 20 Aug - Sat, 13 Sep
SEA
Seattle
SAN
San Diego
S$227 Return, found 20 hours ago
S$227
Return
found 20 hours ago
Select Delta flight, departing Wed, 20 Aug from Seattle to San Diego, returning Sat, 13 Sep, priced at S$227 found 20 hours ago
Delta
Mon, 25 Aug - Tue, 16 Sep
SEA
Seattle
SAN
San Diego
S$228 Return, found 5 days ago
S$228
Return
found 5 days ago
Select Delta flight, departing Mon, 25 Aug from Seattle to San Diego, returning Tue, 16 Sep, priced at S$228 found 5 days ago
Delta
Tue, 19 Aug - Thu, 18 Sep
SEA
Seattle
SAN
San Diego
S$229 Return, found 5 days ago
S$229
Return
found 5 days ago
Select Delta flight, departing Tue, 19 Aug from Seattle to San Diego, returning Thu, 18 Sep, priced at S$229 found 5 days ago
Delta
Thu, 21 Aug - Wed, 10 Sep
SEA
Seattle
SAN
San Diego
S$240 Return, found 20 hours ago
S$240
Return
found 20 hours ago
Select Delta flight, departing Thu, 21 Aug from Seattle to San Diego, returning Wed, 10 Sep, priced at S$240 found 20 hours ago
Delta
Wed, 20 Aug - Sat, 13 Sep
SEA
Seattle
SAN
San Diego
S$253 Return, found 20 hours ago
S$253
Return
found 20 hours ago
Select Delta flight, departing Wed, 20 Aug from Seattle to San Diego, returning Sat, 13 Sep, priced at S$253 found 20 hours ago
Delta
Fri, 22 Aug - Fri, 19 Sep
SEA
Seattle
SAN
San Diego
S$254 Return, found 5 days ago
S$254
Return
found 5 days ago
Select Delta flight, departing Fri, 22 Aug from Seattle to San Diego, returning Fri, 19 Sep, priced at S$254 found 5 days ago
Delta
Mon, 18 Aug - Wed, 10 Sep
SEA
Seattle
SAN
San Diego
S$259 Return, found 20 hours ago
S$259
Return
found 20 hours ago
Select Delta flight, departing Mon, 18 Aug from Seattle to San Diego, returning Wed, 10 Sep, priced at S$259 found 20 hours ago
United
Wed, 20 Aug - Wed, 17 Sep
SEA
Seattle
SAN
San Diego
S$293 Return, found 5 days ago
S$293
Return
found 5 days ago
Select United flight, departing Wed, 20 Aug from Seattle to San Diego, returning Wed, 17 Sep, priced at S$293 found 5 days ago
American Airlines
Wed, 20 Aug - Sat, 13 Sep
SEA
Seattle
SAN
San Diego
S$324 Return, found 20 hours ago
S$324
Return
found 20 hours ago
Select American Airlines flight, departing Wed, 20 Aug from Seattle to San Diego, returning Sat, 13 Sep, priced at S$324 found 20 hours ago

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

November is typically the cheapest month to fly

From S$104 - S$351 per traveller.

Graph displaying average flight prices per month

Seattle to San Diego route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$203
Distance
1681 km
Average flight time
2 hours 51 mins

Perfect flights from Seattle to San Diego

Your Journey from Seattle to San Diego

Start your unforgettable journey with Expedia. Our broad selection of flights from Seattle to San Diego caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, United, American Airlines. Our selection of flights from Seattle - Tacoma Intl. to San Diego Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Seattle to San Diego Flights

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$128 and roundtrip prices from S$203*.
 

Pre-Flight Essentials

Ensure a smooth journey from Seattle to San Diego with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant San Diego

Picture yourself stepping off the plane in San Diego and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Seattle to San Diego Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Seattle to San Diego.
 

Beyond the Flight – Exploring San Diego

With Expedia, your adventure extends beyond the flight. Explore San Diego at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Seattle to San Diego with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Seattle to San Diego with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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$203. 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.

Explore a world of travel with Expedia

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S$362.20
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S$432.90
*Available to Expedia members.