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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Fair Availability
38% of dates checked are available within 10% of the lowest price
Friday, January 8th, 2027
Outbound Flights
6h 7m·Nonstop
$229 USD
IADJan 8 17:55
→SEAJan 8 21:02
UA 1128Boeing 737
8h 35m·1 stop
$239 USDIADJan 8 08:15
→DENJan 8 10:27
UA 792Airbus A321neo
1h 18m layover
DENJan 8 11:45
→SEAJan 8 13:50
UA 2302Boeing 737
8h 58m·1 stop
$239 USDIADJan 8 10:05
→ORDJan 8 11:32
UA 635Boeing 737
1h 45m layover
ORDJan 8 13:17
→SEAJan 8 16:03
UA 2844Airbus A321neo
8h 29m·1 stop
$239 USDIADJan 8 12:43
→DENJan 8 14:55
UA 1587Airbus A321neo
1h 15m layover
DENJan 8 16:10
→SEAJan 8 18:12
UA 2013Boeing 737
9h 22m·1 stop
$239 USDIADJan 8 06:00
→SFOJan 8 09:15
UA 1095Boeing 737MAX 9 Passenger
50m layover
SFOJan 8 10:05
→SEAJan 8 12:22
UA 2192Airbus A320
9h 38m·1 stop
$239 USDIADJan 8 13:00
→ORDJan 8 14:24
UA 2331Boeing 737
2h 31m layover
ORDJan 8 16:55
→SEAJan 8 19:38
UA 653Boeing 737MAX 9 Passenger
9h 14m·1 stop
$239 USDIADJan 8 14:34
→SFOJan 8 17:44
UA 2862Boeing 737MAX 9 Passenger
56m layover
SFOJan 8 18:40
→SEAJan 8 20:48
UA 1243Airbus A320
16h 5m·1 stop
$322 USDIADJan 8 22:37
→LAXJan 9 01:30
UA 1385Boeing 737MAX 9 Passenger
7h layover
LAXJan 9 08:30
→SEAJan 9 11:42
UA 4649Embraer 175