Flights from Seattle Tacoma to Washington DC

Our cheapest offers for flights from Seattle Tacoma to Washington DC

Here you can compare cheap flights from Seattle Tacoma (SEA) to Washington DC (DCA) 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 Washington DC. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Seattle-Tacoma
Washington DC
Outbound
04/26/25
1 Stopover (BOS)
B60498, B61655
08h 40min
Return
05/23/25
1 Stopover (JFK)
B62054, B60263
12h 44min
JetBlue Airways ?
$571
Best option
Seattle-Tacoma
Washington DC
Outbound
04/26/25
direct
AS0002
05h 10min
Return
05/23/25
1 Stopover (LAX)
AS0005, AS1083
10h 06min
Alaska Airlines
$606
Seattle-Tacoma
Washington DC
Outbound
04/26/25
direct
AS0002
05h 10min
Return
05/23/25
1 Stopover (SFO)
AS0007, AS1189
29h 07min
Alaska Airlines ?
$578
Seattle-Tacoma
Washington DC
Outbound
04/26/25
1 Stopover (ORD)
UA0733, UA1457
06h 59min
Return
05/23/25
1 Stopover (ORD)
UA1258, UA1990
10h 28min
United Airlines ?
$584
Seattle-Tacoma
Washington DC
Outbound
04/26/25
1 Stopover (PHL)
AA1358, AA4608
09h 09min
Return
05/23/25
1 Stopover (PHL)
AA5248, AA2001
08h 04min
American Airlines ?
$622
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Seattle-Tacoma - Washington DC

Roundtrip from $570.17
Flight duration min. 04:55 / max. 08:20
Return flight duration min. 06:15
Distance 3743 km
Flights per week 17
Departure airport Airport Seattle-Tacoma International Airport, WA (SEA)
Arrival airport Airport Washington DC - Ronald Reagan National Airport, VA (DCA)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Washington DC
Flight destinations with a similar price
Flight destinations with a similar price