CA $191 Cheap Flights from Washington (DCA) to Seattle (SEA)

Popular airlines from Ronald Reagan National Airport (DCA) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Washington (DCA) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $191 for one-way flights and CA $383 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
JetBlue Airways
JetBlue Airways
JetBlue Airways
American Airlines
Alaska Airlines
Alaska Airlines
JetBlue Airways
Delta
United

Alternative airports near Seattle

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

Frequently asked questions

How much is a flight from National Airport to Sea-Tac Airport?
Start packing your suitcase, because round-trip journeys from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport start from CA $383. That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DCA to Sea-Tac Airport?
When it comes to cancellation fees, every airline has different terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from DCA to Sea-Tac Airport that have flexible change policies?
Flights from National Airport to Sea-Tac Airport offering flexible change policies are available with many carriers. Simply use our "No change fees" filter while searching. You'll only need to cover the cost difference between the two flights, without any additional fees to worry about.
How many hours is the flight from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport?
Lasting around 7 hours and 51 minutes, the flight between DCA and Sea-Tac Airport is a good opportunity to do some last-minute planning. Why not use the time to go over your itinerary for SeaTac?
How far is the flight from DCA to SEA?
The flight distance from Arlington to SeaTac is 3,700 kilometres. Bring along a drink, some snacks and a good movie. Keep yourself occupied and the hours will zip by.
Which airlines fly direct from National Airport to Sea-Tac Airport?
Offering 60 flights each month, Alaska Airlines (AS) is a top choice when flying straight from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport.
Are DCA to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices always go up and down, so there are no guarantees. While last-minute flight deals between National Airport and Seattle - Tacoma Intl. Airport (SEA) are of course possible, it's also a good idea to monitor prices well before you fly. In fact, some carriers announce their prices up to a year ahead of the departure date. Expedia is continuously updating the biggest bargains around, so check back often and be ready to secure your seat when the price dips.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Roundtrip price
CA $382
Distance
3715 km
Average flight time
2 hours 57 mins

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