Washington (IAD) to Seattle / Tacoma (SEA) flight deal in economy from $209
IADWashington Dulles International Airport
Washington, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$272 USD
-23%$209 USD
Verified 28 days agoJanuary 2027
Mon
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Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Sunday, January 31st, 2027
Outbound Flights
6h 7m·Nonstop
$229 USD
IADJan 31 17:55
→SEAJan 31 21:02
UA 1128Boeing 737MAX 9 Passenger
8h 58m·1 stop
$239 USDIADJan 31 10:05
→ORDJan 31 11:32
UA 635Boeing 737
1h 45m layover
ORDJan 31 13:17
→SEAJan 31 16:03
UA 2844Airbus A321neo
9h 54m·1 stop
$239 USDIADJan 31 06:00
→SFOJan 31 09:15
UA 1095Boeing 737MAX 9 Passenger
1h 22m layover
SFOJan 31 10:37
→SEAJan 31 12:54
UA 2192Boeing 737
9h 11m·1 stop
$239 USDIADJan 31 08:15
→SFOJan 31 11:24
UA 1147Boeing 757
51m layover
SFOJan 31 12:15
→SEAJan 31 14:26
UA 1264Boeing 737MAX 8 Passenger
9h 38m·1 stop
$239 USDIADJan 31 13:00
→ORDJan 31 14:24
UA 2331Boeing 737
2h 31m layover
ORDJan 31 16:55
→SEAJan 31 19:38
UA 653Boeing 737MAX 9 Passenger
9h 14m·1 stop
$239 USDIADJan 31 14:34
→SFOJan 31 17:44
UA 2862Boeing 737MAX 9 Passenger
56m layover
SFOJan 31 18:40
→SEAJan 31 20:48
UA 1243Airbus A320
8h 29m·1 stop
$254 USDIADJan 31 12:43
→DENJan 31 14:55
UA 1587Airbus A321neo
1h 15m layover
DENJan 31 16:10
→SEAJan 31 18:12
UA 2013Boeing 737
8h 35m·1 stop
$318 USDIADJan 31 08:15
→DENJan 31 10:27
UA 792Airbus A321neo
1h 18m layover
DENJan 31 11:45
→SEAJan 31 13:50
UA 2302Boeing 737