Cheap Flights From Ronald Reagan Washington National (DCA) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from Washington (DCA) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $524 round trip and CA $219 one way. Prices and availability subject to change. Additional terms may apply.

Thu, May 28 - Thu, Jun 4
DCA
Washington
SEA
Seattle
CA $524 Roundtrip, found 16 hours ago
CA $524
Roundtrip
found 16 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Washington to Seattle, returning Thu, Jun 4, priced at CA $524 found 16 hours ago
Thu, May 28 - Thu, Jun 4
DCA
Washington
SEA
Seattle
CA $546 Roundtrip, found 16 hours ago
CA $546
Roundtrip
found 16 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Washington to Seattle, returning Thu, Jun 4, priced at CA $546 found 16 hours ago
Thu, May 7 - Sat, May 9
DCA
Washington
SEA
Seattle
CA $589 Roundtrip, found 6 days ago
CA $589
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, May 7 from Washington to Seattle, returning Sat, May 9, priced at CA $589 found 6 days ago
Tue, Jul 7 - Tue, Jul 21
DCA
Washington
SEA
Seattle
CA $599 Roundtrip, found 3 days ago
CA $599
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jul 7 from Washington to Seattle, returning Tue, Jul 21, priced at CA $599 found 3 days ago
Thu, May 28 - Thu, Jun 4
DCA
Washington
SEA
Seattle
CA $610 Roundtrip, found 16 hours ago
CA $610
Roundtrip
found 16 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Washington to Seattle, returning Thu, Jun 4, priced at CA $610 found 16 hours ago
Fri, Jun 26 - Mon, Jun 29
DCA
Washington
SEA
Seattle
CA $618 Roundtrip, found 1 day ago
CA $618
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Jun 26 from Washington to Seattle, returning Mon, Jun 29, priced at CA $618 found 1 day ago
Thu, May 7 - Sat, May 9
DCA
Washington
SEA
Seattle
CA $632 Roundtrip, found 6 days ago
CA $632
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, May 7 from Washington to Seattle, returning Sat, May 9, priced at CA $632 found 6 days ago
Fri, Jun 26 - Mon, Jun 29
DCA
Washington
SEA
Seattle
CA $633 Roundtrip, found 1 day ago
CA $633
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Jun 26 from Washington to Seattle, returning Mon, Jun 29, priced at CA $633 found 1 day ago
Tue, Jul 28 - Tue, Aug 11
DCA
Washington
SEA
Seattle
CA $634 Roundtrip, found 3 days ago
CA $634
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jul 28 from Washington to Seattle, returning Tue, Aug 11, priced at CA $634 found 3 days ago
Tue, Jul 7 - Tue, Jul 21
DCA
Washington
SEA
Seattle
CA $637 Roundtrip, found 3 days ago
CA $637
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jul 7 from Washington to Seattle, returning Tue, Jul 21, priced at CA $637 found 3 days ago

Frequently asked questions

Are there direct flights from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport?
Wander wisely and get your hands on a direct flight from National Airport to SEA with Alaska Airlines. This carrier is the ideal choice if you'd rather get to Seattle as fast as you can.
What airlines fly from National Airport to Sea-Tac Airport?
Many seasoned wanderers choose to take to the skies with Alaska Airlines (AS) from Arlington to Seattle. This reputable air carrier not only offers as many as 60 flights per month, it also has direct services.
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.

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*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.