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 agoOctober 2026
Mon
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Fair Availability
38% of dates checked are available within 10% of the lowest price
Tuesday, October 6th, 2026
Outbound Flights
15h 50m·2 stops
$496 USD
IADOct 6 08:25
→ATLOct 6 10:23
UA 2739Airbus A320
6h 9m layover
ATLOct 6 16:32
→DENOct 6 17:57
UA 609Boeing 737MAX 9 Passenger
1h 17m layover
DENOct 6 19:14
→SEAOct 6 21:15
UA 2767Airbus A321neo
16h 58m·2 stops
$496 USDIADOct 6 22:25
→ATLOct 7 00:23
UA 1357Airbus A319
6h 37m layover
ATLOct 7 07:00
→SFOOct 7 09:15
UA 571Airbus A319
53m layover
SFOOct 7 10:08
→SEAOct 7 12:23
UA 500Airbus A320
8h 21m·1 stop
$555 USDIADOct 6 10:30
→ORDOct 6 11:48
UA 1252Boeing 737
1h 28m layover
ORDOct 6 13:16
→SEAOct 6 15:51
UA 1660Boeing 737
8h 17m·1 stop
$555 USDIADOct 6 06:10
→ORDOct 6 07:25
UA 2691Boeing 737MAX 9 Passenger
1h 20m layover
ORDOct 6 08:45
→SEAOct 6 11:27
UA 2099Airbus A321neo
8h 42m·1 stop
$555 USDIADOct 6 13:10
→ORDOct 6 14:26
UA 2331Boeing 737
1h 39m layover
ORDOct 6 16:05
→SEAOct 6 18:52
UA 1801Airbus A321neo
8h 36m·1 stop
$555 USDIADOct 6 17:20
→ORDOct 6 18:41
UA 2497Airbus A321neo
1h 31m layover
ORDOct 6 20:12
→SEAOct 6 22:56
UA 2211Boeing 737MAX 9 Passenger
5h 46m·Nonstop
$594 USDIADOct 6 13:05
→SEAOct 6 15:51
UA 1824Boeing 737MAX 9 Passenger
5h 52m·Nonstop
$594 USDIADOct 6 17:45
→SEAOct 6 20:37
UA 1128Boeing 737MAX 9 Passenger
8h 47m·1 stop
$604 USDIADOct 6 08:30
→SFOOct 6 11:22
UA 1147Boeing 757
41m layover
SFOOct 6 12:03
→SEAOct 6 14:17
UA 2744Airbus A319
9h 5m·1 stop
$604 USDIADOct 6 09:28
→LAXOct 6 12:02
UA 657Boeing 737MAX 9 Passenger
42m layover
LAXOct 6 12:44
→SEAOct 6 15:33
UA 1295Boeing 737MAX 8 Passenger