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
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Fair Availability
38% of dates checked are available within 10% of the lowest price
Monday, January 18th, 2027
Outbound Flights
6h 7m·Nonstop
$229 USD
IADJan 18 17:55
→SEAJan 18 21:02
UA 1128Boeing 737MAX 9 Passenger
8h 58m·1 stop
$239 USDIADJan 18 10:05
→ORDJan 18 11:32
UA 635Boeing 737
1h 45m layover
ORDJan 18 13:17
→SEAJan 18 16:03
UA 2844Airbus A321neo
11h 26m·1 stop
$239 USDIADJan 18 06:00
→SFOJan 18 09:15
UA 1095Boeing 737MAX 9 Passenger
3h layover
SFOJan 18 12:15
→SEAJan 18 14:26
UA 1264Boeing 737MAX 8 Passenger
9h 22m·1 stop
$251 USDIADJan 18 06:00
→SFOJan 18 09:15
UA 1095Boeing 737MAX 9 Passenger
50m layover
SFOJan 18 10:05
→SEAJan 18 12:22
UA 2192Airbus A320
9h 38m·1 stop
$252 USDIADJan 18 13:00
→ORDJan 18 14:24
UA 2331Boeing 737
2h 31m layover
ORDJan 18 16:55
→SEAJan 18 19:38
UA 653Boeing 737MAX 9 Passenger
9h 11m·1 stop
$260 USDIADJan 18 08:15
→SFOJan 18 11:24
UA 1147Boeing 757
51m layover
SFOJan 18 12:15
→SEAJan 18 14:26
UA 1264Boeing 737MAX 8 Passenger
16h 5m·1 stop
$322 USDIADJan 18 22:37
→LAXJan 19 01:30
UA 1385Boeing 737MAX 9 Passenger
7h layover
LAXJan 19 08:30
→SEAJan 19 11:42
UA 4649Embraer 175
8h 35m·1 stop
$573 USDIADJan 18 08:15
→DENJan 18 10:27
UA 792Airbus A321neo
1h 18m layover
DENJan 18 11:45
→SEAJan 18 13:50
UA 2302Boeing 737