Flights from Washington DC to Seattle Tacoma

Our cheapest offers for flights from Washington DC to Seattle Tacoma

Here you can compare cheap flights from Washington DC (DCA) to Seattle Tacoma (SEA) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Seattle Tacoma. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (DEN)
F90689, F93405
09h 44min
Return
05/19/25
1 Stopover (DEN)
F93406, F90686
27h 07min
Frontier Airlines
$221
Best option
Washington DC
Seattle-Tacoma
Outbound
06/20/25
1 Stopover (LAX)
AS0005, AS1215
16h 21min
Return
07/19/25
direct
AS0002
05h 10min
Alaska Airlines ?
$620
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (DEN)
F90689, F93405
09h 44min
Return
05/19/25
1 Stopover (DEN)
F93406, F90686
27h 07min
Frontier Airlines
$231
Washington DC
Seattle-Tacoma
Outbound
04/12/25
1 Stopover (DEN)
F90685, F91175
11h 32min
Return
04/27/25
1 Stopover (DEN)
F91176, F90686
20h 39min
Frontier Airlines
$283
found yesterday
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (DEN)
F90685, F93405
20h 44min
Return
05/19/25
1 Stopover (DEN)
F93406, F90690
12h 59min
Frontier Airlines ?
$301
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (DEN)
F90689, F93405
09h 44min
Return
05/19/25
1 Stopover (DEN)
F93406, F90686
27h 07min
Frontier Airlines ?
$380
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (ORD)
UA1888, UA2211
10h 13min
Return
05/19/25
1 Stopover (ORD)
UA0747, UA2426
09h 57min
United Airlines ?
$387
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (ORD)
UA1888, UA2211
10h 13min
Return
05/19/25
1 Stopover (ORD)
UA0747, UA0542
06h 59min
United Airlines
$425
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (ORD)
AA1637, AA3002
08h 10min
Return
05/19/25
1 Stopover (ORD)
AA3029, AA2345
07h 45min
American Airlines ?
$432
Washington DC
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (DFW)
AA1022, AA0767
09h 00min
Return
05/19/25
1 Stopover (PHL)
AA2760, AA4608
09h 55min
American Airlines ?
$452
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Washington DC - Seattle-Tacoma

Roundtrip from $220.02
Flight duration min. 06:15
Return flight duration min. 04:55/ max. 08:20
Distance 3743 km
Flights per week 16
Departure airport Airport Washington DC - Ronald Reagan National Airport, VA (DCA)
Arrival airport Airport Seattle-Tacoma International Airport, WA (SEA)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Seattle-Tacoma
Flight destinations with a similar price
Flight destinations with a similar price