$57 Cheap Flights from Seattle (SEA) to San Diego (SAN)

View $57 flight on Wed, Jul 23, 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 $57 for one-way flights and $133 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Jul 15 - Tue, Jul 29
SEA
Seattle
SAN
San Diego
$133 Roundtrip, found 1 day ago
$133
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Tue, Jul 15 from Seattle to San Diego, returning Tue, Jul 29, priced at $133 found 1 day ago
Spirit Airlines
Wed, Jul 23 - Wed, Jul 30
SEA
Seattle
SAN
San Diego
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Wed, Jul 23 from Seattle to San Diego, returning Wed, Jul 30, priced at $137 found 1 hour ago
Spirit Airlines
Wed, Jul 23 - Tue, Jul 29
SEA
Seattle
SAN
San Diego
$141 Roundtrip, found 1 hour ago
$141
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Wed, Jul 23 from Seattle to San Diego, returning Tue, Jul 29, priced at $141 found 1 hour ago
Spirit Airlines
Fri, Jul 18 - Tue, Jul 22
SEA
Seattle
SAN
San Diego
$149 Roundtrip, found 1 hour ago
$149
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Fri, Jul 18 from Seattle to San Diego, returning Tue, Jul 22, priced at $149 found 1 hour ago
Spirit Airlines
Thu, Jul 17 - Wed, Aug 6
SEA
Seattle
SAN
San Diego
$149 Roundtrip, found 20 hours ago
$149
Roundtrip
found 20 hours ago
Select Spirit Airlines flight, departing Thu, Jul 17 from Seattle to San Diego, returning Wed, Aug 6, priced at $149 found 20 hours ago
Spirit Airlines
Tue, Jul 15 - Tue, Jul 22
SEA
Seattle
SAN
San Diego
$150 Roundtrip, just found
$150
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Jul 15 from Seattle to San Diego, returning Tue, Jul 22, priced at $150 just found
Frontier Airlines
Mon, Oct 6 - Thu, Oct 9
PAE
Seattle
SAN
San Diego
$171 Roundtrip, found 5 days ago
$171
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Oct 6 from Seattle to San Diego, returning Thu, Oct 9, priced at $171 found 5 days ago
Delta
Sat, Nov 8 - Sat, Nov 15
SEA
Seattle
SAN
San Diego
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Nov 8 from Seattle to San Diego, returning Sat, Nov 15, priced at $177 found 1 hour ago
Southwest Airlines
Wed, Aug 27 - Thu, Sep 4
SEA
Seattle
SAN
San Diego
$188 Roundtrip, found 1 hour ago
$188
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Wed, Aug 27 from Seattle to San Diego, returning Thu, Sep 4, priced at $188 found 1 hour ago
United
Wed, Oct 29 - Mon, Nov 3
SEA
Seattle
SAN
San Diego
$197 Roundtrip, just found
$197
Roundtrip
just found
Select United flight, departing Wed, Oct 29 from Seattle to San Diego, returning Mon, Nov 3, priced at $197 just found

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

November is typically the cheapest month to fly

From $81 - $273 per traveler.

Graph displaying average flight prices per month

Flights from Seattle (SEA) to San Diego (SAN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$133
Distance
1051 mi
Average flight time
2 hours 51 mins

Seattle to San Diego Flights

The cheapest times to fly from Seattle to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to San Diego are during the month of July. You can find some of the cheapest flights from Seattle to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to San Diego

Sunday is one of the best days to book for cheap flights from Seattle to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $57 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN) cost?
Pick up cheap return flights starting from $173 from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on July 23 2025 and touching down at SAN. The price was last updated on June 30 2025 and has not changed since.
What is the cheapest month to fly from SEA to SAN?
Search for direct flights from SEA to SAN in August to score cheaper fares. You can find a one-way Alaska Airlines flight for $107 leaving on August 19 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on June 30 2025 and remains unchanged.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Jump on a nonstop flight with Alaska Airlines and go straight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN).
What is the cheapest airline that flies from SEA to SAN?
With tickets starting at $107 for a one-way flight from SEA to SAN, Alaska Airlines is currently the cheapest airline for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on August 19 2025. Prices were last updated on June 30 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Daily, an average of 11 direct flights take off from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN). Select the departure date that best fits your schedule.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Flights between SEA and SAN are their busiest at 9 AM. For a less crowded experience and potentially cheaper prices, look for a departure that's outside typical rush times.
What day of the week has the most flights from SEA to SAN?
If you travel on a Thursday, you'll get the widest range of options for flights from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Seattle - Tacoma Intl. Airport (SEA)'s earliest flight to San Diego Intl. Airport (SAN) leaves at approximately 7:00AM UTC-8. With a travel duration of 2h 48m, you'll touch down at around 9:48AM UTC-8.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
It usually takes 2 hours and 48 minutes to cover the 1,050 mi from SEA to SAN.
What airline has the least delays from SEA to SAN?
With 87% of journeys typically landing on schedule, Delta Air Lines has the best on-time performance for direct flights from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN). To check your flight status and receive notifications about any changes, simply head to the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego from Seattle - Tacoma Intl. Airport (SEA)?
San Diego Intl. Airport (SAN) is the only airport in San Diego with direct flights from Seattle - Tacoma Intl. Airport (SEA). Explore the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN) last-minute?
Booking your plane ticket from SEA to SAN right before your trip is generally more expensive. But if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a SEA to SAN flight and hotel package?
Booking a SEA to SAN flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
You can usually reschedule or cancel your SEA to SAN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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