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 1st, 2027
Outbound Flights
9h 1m·1 stop
$239 USD
IADJan 1 13:05
→ORDJan 1 14:29
UA 2331Boeing 737MAX 9 Passenger
1h 51m layover
ORDJan 1 16:20
→SEAJan 1 19:06
UA 1801Airbus A321neo
10h 2m·1 stop
$239 USDIADJan 1 15:30
→ORDJan 1 16:54
UA 1786Boeing 737MAX 9 Passenger
2h 48m layover
ORDJan 1 19:42
→SEAJan 1 22:32
UA 2798Airbus A321neo
6h 7m·Nonstop
$269 USDIADJan 1 17:55
→SEAJan 1 21:02
UA 1128Boeing 737MAX 9 Passenger
9h 9m·1 stop
$302 USDIADJan 1 10:10
→ORDJan 1 11:37
UA 1252Boeing 737
1h 58m layover
ORDJan 1 13:35
→SEAJan 1 16:19
UA 1764Boeing 737
9h 50m·1 stop
$330 USDIADJan 1 06:45
→DENJan 1 08:54
UA 2357Boeing 757
2h 36m layover
DENJan 1 11:30
→SEAJan 1 13:35
UA 2302Boeing 737MAX 9 Passenger
6h 7m·Nonstop
$332 USDIADJan 1 08:50
→SEAJan 1 11:57
UA 2731Boeing 737
23h 22m·1 stop
$385 USDIADJan 1 22:44
→ORDJan 2 00:01
UA 421Airbus A321neo
16h 19m layover
ORDJan 2 16:20
→SEAJan 2 19:06
UA 1801Airbus A321neo
8h 28m·1 stop
$437 USDIADJan 1 12:39
→DENJan 1 14:51
UA 1587Airbus A321neo
1h 14m layover
DENJan 1 16:05
→SEAJan 1 18:07
UA 2013Boeing 737