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
Monday, January 25th, 2027
Outbound Flights
6h 7m·Nonstop
$229 USD
IADJan 25 17:55
→SEAJan 25 21:02
UA 1128Boeing 737MAX 9 Passenger
9h 11m·1 stop
$239 USDIADJan 25 08:15
→SFOJan 25 11:24
UA 1147Boeing 757
51m layover
SFOJan 25 12:15
→SEAJan 25 14:26
UA 1264Boeing 737MAX 8 Passenger
8h 58m·1 stop
$239 USDIADJan 25 10:05
→ORDJan 25 11:32
UA 635Boeing 737
1h 45m layover
ORDJan 25 13:17
→SEAJan 25 16:03
UA 2844Airbus A321neo
9h 38m·1 stop
$239 USDIADJan 25 13:00
→ORDJan 25 14:24
UA 2331Boeing 737
2h 31m layover
ORDJan 25 16:55
→SEAJan 25 19:38
UA 653Boeing 737MAX 9 Passenger
9h 14m·1 stop
$239 USDIADJan 25 14:34
→SFOJan 25 17:44
UA 2862Boeing 737MAX 9 Passenger
56m layover
SFOJan 25 18:40
→SEAJan 25 20:48
UA 1243Airbus A320
9h 22m·1 stop
$239 USDIADJan 25 06:00
→SFOJan 25 09:15
UA 1095Boeing 737MAX 9 Passenger
50m layover
SFOJan 25 10:05
→SEAJan 25 12:22
UA 2192Airbus A320
8h 29m·1 stop
$304 USDIADJan 25 12:43
→DENJan 25 14:55
UA 1587Airbus A321neo
1h 15m layover
DENJan 25 16:10
→SEAJan 25 18:12
UA 2013Boeing 737
16h 5m·1 stop
$322 USDIADJan 25 22:37
→LAXJan 26 01:30
UA 1385Boeing 737MAX 9 Passenger
7h layover
LAXJan 26 08:30
→SEAJan 26 11:42
UA 4649Embraer 175