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
Tue
Wed
Thu
Fri
Sat
Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Monday, January 4th, 2027
Outbound Flights
6h 7m·Nonstop
$279 USD
IADJan 4 08:50
→SEAJan 4 11:57
UA 2731Boeing 737
6h 7m·Nonstop
$279 USDIADJan 4 17:55
→SEAJan 4 21:02
UA 1128Boeing 737MAX 9 Passenger
9h 9m·1 stop
$289 USDIADJan 4 10:10
→ORDJan 4 11:37
UA 1252Boeing 737
1h 58m layover
ORDJan 4 13:35
→SEAJan 4 16:19
UA 1764Boeing 737
8h 51m·1 stop
$289 USDIADJan 4 06:05
→EWRJan 4 07:20
UA 1359Boeing 737MAX 9 Passenger
1h 15m layover
EWRJan 4 08:35
→SEAJan 4 11:56
UA 1330Boeing 737
9h 1m·1 stop
$289 USDIADJan 4 13:05
→ORDJan 4 14:29
UA 2331Boeing 737MAX 9 Passenger
1h 51m layover
ORDJan 4 16:20
→SEAJan 4 19:06
UA 1801Airbus A321neo
9h·1 stop
$304 USDIADJan 4 14:40
→SFOJan 4 17:50
UA 2862Boeing 737MAX 9 Passenger
42m layover
SFOJan 4 18:32
→SEAJan 4 20:40
UA 2159Boeing 737
8h 54m·1 stop
$328 USDIADJan 4 12:35
→SFOJan 4 15:42
UA 1434Boeing 737
35m layover
SFOJan 4 16:17
→SEAJan 4 18:29
UA 2279Airbus A320
8h 28m·1 stop
$390 USDIADJan 4 12:39
→DENJan 4 14:51
UA 1587Airbus A321neo
1h 14m layover
DENJan 4 16:05
→SEAJan 4 18:07
UA 2013Boeing 737