Cheap Flights From San Diego Intl. (SAN) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from San Diego (SAN) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $243 round trip and CA $135 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Apr 17 - Tue, Apr 21
SAN
San Diego
SEA
Seattle
CA $243 Roundtrip, found 4 hours ago
CA $243
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Fri, Apr 17 from San Diego to Seattle, returning Tue, Apr 21, priced at CA $243 found 4 hours ago
Tue, Apr 14 - Tue, Apr 21
SAN
San Diego
SEA
Seattle
CA $243 Roundtrip, found 4 hours ago
CA $243
Roundtrip
found 4 hours ago
Select Hawaiian Airlines flight, departing Tue, Apr 14 from San Diego to Seattle, returning Tue, Apr 21, priced at CA $243 found 4 hours ago
Sun, Apr 19 - Sun, Apr 26
SAN
San Diego
SEA
Seattle
CA $245 Roundtrip, found 4 hours ago
CA $245
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sun, Apr 19 from San Diego to Seattle, returning Sun, Apr 26, priced at CA $245 found 4 hours ago
Wed, Mar 11 - Sat, May 9
SAN
San Diego
SEA
Seattle
CA $247 Roundtrip, found 5 days ago
CA $247
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Mar 11 from San Diego to Seattle, returning Sat, May 9, priced at CA $247 found 5 days ago
Fri, Mar 6 - Sat, May 2
SAN
San Diego
SEA
Seattle
CA $249 Roundtrip, found 6 days ago
CA $249
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 6 from San Diego to Seattle, returning Sat, May 2, priced at CA $249 found 6 days ago
Thu, Mar 5 - Sun, Mar 8
SAN
San Diego
SEA
Seattle
CA $251 Roundtrip, found 11 hours ago
CA $251
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Thu, Mar 5 from San Diego to Seattle, returning Sun, Mar 8, priced at CA $251 found 11 hours ago
Sat, Apr 18 - Sat, Apr 25
SAN
San Diego
SEA
Seattle
CA $259 Roundtrip, found 4 hours ago
CA $259
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Apr 18 from San Diego to Seattle, returning Sat, Apr 25, priced at CA $259 found 4 hours ago
Thu, Apr 16 - Tue, Apr 21
SAN
San Diego
SEA
Seattle
CA $270 Roundtrip, found 1 day ago
CA $270
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Apr 16 from San Diego to Seattle, returning Tue, Apr 21, priced at CA $270 found 1 day ago
Thu, May 7 - Wed, May 13
SAN
San Diego
SEA
Seattle
CA $272 Roundtrip, found 2 days ago
CA $272
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, May 7 from San Diego to Seattle, returning Wed, May 13, priced at CA $272 found 2 days ago
Fri, Mar 6 - Sat, May 2
SAN
San Diego
SEA
Seattle
CA $277 Roundtrip, found 6 days ago
CA $277
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 6 from San Diego to Seattle, returning Sat, May 2, priced at CA $277 found 6 days ago

Frequently asked questions

Are there direct flights from San Diego Intl. Airport (SAN) to Sea-Tac Airport?
Multiple airlines advertise nonstop flights from San Diego Airport to Seattle - Tacoma Intl. Airport (SEA). Among these are Alaska Airlines and Delta — start with these if you want to reach Seattle with no fuss.
What airlines fly from San Diego Airport to Seattle - Tacoma Intl. Airport (SEA)?
There are a few airlines that offer direct flights from San Diego Airport to SEA. Alaska Airlines (AS) is one of the most well-known, and operates around 230 flights every month. If you'd like more options, look up Delta (DL). This airline operates 121 flights each month. Between the two, you're bound to find a deal to suit your travel needs.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.