Seattle / Tacoma (SEA) to Washington (IAD) flight deal in economy from $219
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
IADWashington Dulles International Airport
Washington, United States
$266 USD
-18%$219 USD
Verified about 1 hour agoOctober 2026
Mon
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Sun
Good Availability
46% of dates checked are available within 10% of the lowest price
Sunday, October 11th, 2026
Outbound Flights
5h 3m·Nonstop
$219 USD
SEAOct 11 23:14
→IADOct 12 07:17
UA 2693Boeing 737MAX 9 Passenger
8h 12m·1 stop
$229 USDSEAOct 11 18:05
→DENOct 11 21:49
UA 1218Airbus A321neo
2h 3m layover
DENOct 11 23:52
→IADOct 12 05:17
UA 1924Boeing 737
5h 6m·Nonstop
$258 USDSEAOct 11 08:25
→IADOct 11 16:31
UA 1523Boeing 737MAX 9 Passenger
9h 30m·1 stop
$382 USDSEAOct 11 12:00
→IAHOct 11 18:30
UA 1752Boeing 737MAX 9 Passenger
1h 50m layover
IAHOct 11 20:20
→IADOct 12 00:30
UA 1968Boeing 737MAX 8 Passenger
8h 46m·1 stop
$382 USDSEAOct 11 18:43
→LAXOct 11 21:32
UA 1730Boeing 737MAX 9 Passenger
58m layover
LAXOct 11 22:30
→IADOct 12 06:29
UA 2372Boeing 757
7h 54m·1 stop
$398 USDSEAOct 11 13:56
→ORDOct 11 20:17
UA 2369Boeing 737MAX 9 Passenger
1h 28m layover
ORDOct 11 21:45
→IADOct 12 00:50
UA 1922Boeing 737MAX 9 Passenger
8h 36m·1 stop
$404 USDSEAOct 11 19:25
→SFOOct 11 21:47
UA 737Boeing 737MAX 9 Passenger
53m layover
SFOOct 11 22:40
→IADOct 12 07:01
UA 2837Boeing 737MAX 9 Passenger
8h 29m·1 stop
$523 USDSEAOct 11 23:59
→IAHOct 12 06:17
UA 2702Boeing 737MAX 8 Passenger
1h 3m layover
IAHOct 12 07:20
→IADOct 12 11:28
UA 1549Boeing 737