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 $412 round trip and CA $208 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Aug. 13 - Wed, Aug. 20
DCA
Washington
SEA
Seattle
CA $412 Roundtrip, found 6 hours ago
CA $412
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Aug. 13 from Washington to Seattle, returning Wed, Aug. 20, priced at CA $412 found 6 hours ago
Wed, Aug. 13 - Wed, Aug. 20
DCA
Washington
SEA
Seattle
CA $440 Roundtrip, found 6 hours ago
CA $440
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Aug. 13 from Washington to Seattle, returning Wed, Aug. 20, priced at CA $440 found 6 hours ago
Mon, Aug. 25 - Thu, Aug. 28
DCA
Washington
SEA
Seattle
CA $461 Roundtrip, found 2 days ago
CA $461
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Aug. 25 from Washington to Seattle, returning Thu, Aug. 28, priced at CA $461 found 2 days ago
Mon, Aug. 25 - Thu, Aug. 28
DCA
Washington
SEA
Seattle
CA $463 Roundtrip, found 2 days ago
CA $463
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Aug. 25 from Washington to Seattle, returning Thu, Aug. 28, priced at CA $463 found 2 days ago
Wed, Aug. 13 - Wed, Aug. 20
DCA
Washington
SEA
Seattle
CA $467 Roundtrip, found 6 hours ago
CA $467
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Aug. 13 from Washington to Seattle, returning Wed, Aug. 20, priced at CA $467 found 6 hours ago
Wed, Aug. 13 - Wed, Aug. 20
DCA
Washington
SEA
Seattle
CA $482 Roundtrip, found 6 hours ago
CA $482
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed, Aug. 13 from Washington to Seattle, returning Wed, Aug. 20, priced at CA $482 found 6 hours ago
Mon, Aug. 25 - Thu, Aug. 28
DCA
Washington
SEA
Seattle
CA $490 Roundtrip, found 2 days ago
CA $490
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Aug. 25 from Washington to Seattle, returning Thu, Aug. 28, priced at CA $490 found 2 days ago
Mon, Aug. 25 - Thu, Aug. 28
DCA
Washington
SEA
Seattle
CA $495 Roundtrip, found 2 days ago
CA $495
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Aug. 25 from Washington to Seattle, returning Thu, Aug. 28, priced at CA $495 found 2 days ago
Fri, Sep. 5 - Mon, Sep. 8
DCA
Washington
SEA
Seattle
CA $507 Roundtrip, found 6 days ago
CA $507
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Sep. 5 from Washington to Seattle, returning Mon, Sep. 8, priced at CA $507 found 6 days ago
Wed, Aug. 13 - Wed, Aug. 20
DCA
Washington
SEA
Seattle
CA $511 Roundtrip, found 6 hours ago
CA $511
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, Aug. 13 from Washington to Seattle, returning Wed, Aug. 20, priced at CA $511 found 6 hours 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.
*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.