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

View $57 flight on Tue, Jul 22, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $57 for one-way flights and $128 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed, Jul 16 - Tue, Jul 22
SAN
San Diego
SEA
Seattle
$128 Roundtrip, just found
$128
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Jul 16 from San Diego to Seattle, returning Tue, Jul 22, priced at $128 just found
Spirit Airlines
Tue, Jul 15 - Thu, Jul 17
SAN
San Diego
SEA
Seattle
$134 Roundtrip, found 10 hours ago
$134
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Tue, Jul 15 from San Diego to Seattle, returning Thu, Jul 17, priced at $134 found 10 hours ago
Spirit Airlines
Tue, Jul 22 - Tue, Aug 5
SAN
San Diego
SEA
Seattle
$135 Roundtrip, found 21 hours ago
$135
Roundtrip
found 21 hours ago
Select Spirit Airlines flight, departing Tue, Jul 22 from San Diego to Seattle, returning Tue, Aug 5, priced at $135 found 21 hours ago
Spirit Airlines
Tue, Jul 22 - Wed, Jul 30
SAN
San Diego
SEA
Seattle
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Jul 22 from San Diego to Seattle, returning Wed, Jul 30, priced at $137 found 1 hour ago
Spirit Airlines
Thu, Jul 17 - Wed, Jul 23
SAN
San Diego
SEA
Seattle
$138 Roundtrip, found 1 hour ago
$138
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Thu, Jul 17 from San Diego to Seattle, returning Wed, Jul 23, priced at $138 found 1 hour ago
Spirit Airlines
Tue, Jul 29 - Wed, Jul 30
SAN
San Diego
SEA
Seattle
$139 Roundtrip, found 12 hours ago
$139
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Tue, Jul 29 from San Diego to Seattle, returning Wed, Jul 30, priced at $139 found 12 hours ago
Delta
Sat, Nov 8 - Tue, Nov 11
SAN
San Diego
SEA
Seattle
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Nov 8 from San Diego to Seattle, returning Tue, Nov 11, priced at $177 found 1 hour ago
Southwest Airlines
Mon, Aug 18 - Wed, Aug 20
SAN
San Diego
SEA
Seattle
$188 Roundtrip, found 2 hours ago
$188
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Mon, Aug 18 from San Diego to Seattle, returning Wed, Aug 20, priced at $188 found 2 hours ago
Frontier Airlines
Thu, Aug 21 - Thu, Aug 28
SAN
San Diego
SEA
Seattle
$193 Roundtrip, found 23 hours ago
$193
Roundtrip
found 23 hours ago
Select Frontier Airlines flight, departing Thu, Aug 21 from San Diego to Seattle, returning Thu, Aug 28, priced at $193 found 23 hours ago
American Airlines
Sat, Nov 8 - Tue, Nov 11
CLD
Carlsbad
SEA
Seattle
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Nov 8 from Carlsbad to Seattle, returning Tue, Nov 11, priced at $197 found 1 hour ago

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

January is typically the cheapest month to fly

From $86 - $251 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boeing Field BFI. Average driving time to city center is 10 minutes. Flights from $925
BFI
Boeing Field
Average driving time to city center10 min
Flights from $925
Flights from San Diego (SAN) to Seattle (SEA)
Origin airport
San Diego Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$128
Distance
1051 mi
Average flight time
2 hours 59 mins

San Diego to Seattle Flights

The cheapest times to fly from San Diego to Seattle

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 San Diego to Seattle are during the month of July. You can find some of the cheapest flights from San Diego to Seattle with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Diego to Seattle: 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 San Diego to Seattle

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 San Diego to Seattle 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 San Diego to Seattle 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 San Diego to Seattle 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 San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) cost?
You can find cheap return tickets from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) starting at $173. Snag a seat and get ready for takeoff. 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 SAN on July 23 2025 and touching down at SEA. The price was last updated on June 29 2025 and has not changed since.
What is the cheapest month to fly from SAN to SEA?
The cheapest flights from SAN to SEA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
You can fly directly from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) on an Alaska Airlines flight.
What is the cheapest airline that flies from SAN to SEA?
With tickets starting at $108 for a one-way flight from SAN to SEA, Alaska Airlines is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAN on August 23 2025. Prices were last updated on June 29 2025 and have not changed since.
How many flights per day from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
When taking off from San Diego Intl. Airport (SAN), you can pick from an average of 11 daily direct flights to Seattle - Tacoma Intl. Airport (SEA).
What are the most popular departure times for flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
Flights between SAN and SEA are their busiest at 7 AM. If you're after a more relaxed trip and possibly cheaper prices, choose a time outside the usual busy windows.
What day of the week has the most flights from SAN to SEA?
If you travel on a Sunday, you'll get the largest range of choices for flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
Catch the earliest flight at around 6:20AM UTC-8, leaving from San Diego Intl. Airport (SAN). You'll be traveling for roughly 3h 10m, reaching Seattle - Tacoma Intl. Airport (SEA) at approximately 9:30AM UTC-8.
How long does it take to fly from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
It takes approximately 3 hours and 11 minutes to cover the 1,050 mi from SAN to SEA.
What airline has the least delays from SAN to SEA?
With 82% of journeys usually landing on schedule, American Airlines has the best on-time performance for direct flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA). To monitor your flight status and receive notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) route, fly before 3 PM. Departures after this time are 22% more likely to be 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 Seattle from San Diego Intl. Airport (SAN)?
Board a direct flight from San Diego Intl. Airport (SAN) to Seattle and land at Seattle - Tacoma Intl. Airport (SEA). An alternative arrival point to this city is Snohomish County - Paine Field Airport (PAE).
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book a ticket from SAN to SEA often results in higher prices. While you may find some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule to maximize your chances of scoring a bargain.
Is it cheaper to book a SAN to SEA flight and hotel package?
Opting for a SAN to SEA flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA)?
You can usually cancel or reschedule your SAN to SEA flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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