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
Wednesday, October 14th, 2026
Outbound Flights
15h 44m·1 stop
$460 USD
IADOct 14 22:10
→LGAOct 14 23:30
UA 4026Embraer 175
8h 20m layover·Overnight
EWROct 15 07:50
→SEAOct 15 10:54
UA 1330Boeing 737MAX 9 Passenger
8h 21m·1 stop
$555 USDIADOct 14 10:30
→ORDOct 14 11:48
UA 1252Boeing 737
1h 28m layover
ORDOct 14 13:16
→SEAOct 14 15:51
UA 1660Boeing 737
8h 17m·1 stop
$555 USDIADOct 14 06:10
→ORDOct 14 07:25
UA 2691Boeing 737MAX 9 Passenger
1h 20m layover
ORDOct 14 08:45
→SEAOct 14 11:27
UA 2099Airbus A321neo
8h 42m·1 stop
$555 USDIADOct 14 13:10
→ORDOct 14 14:26
UA 2331Boeing 737
1h 39m layover
ORDOct 14 16:05
→SEAOct 14 18:52
UA 1801Airbus A321neo
8h 36m·1 stop
$555 USDIADOct 14 17:20
→ORDOct 14 18:41
UA 2497Airbus A321neo
1h 31m layover
ORDOct 14 20:12
→SEAOct 14 22:56
UA 2211Boeing 737MAX 9 Passenger
5h 46m·Nonstop
$594 USDIADOct 14 13:05
→SEAOct 14 15:51
UA 1824Boeing 737MAX 9 Passenger
5h 52m·Nonstop
$594 USDIADOct 14 17:45
→SEAOct 14 20:37
UA 1128Boeing 737MAX 9 Passenger
8h 47m·1 stop
$604 USDIADOct 14 08:30
→SFOOct 14 11:22
UA 1147Boeing 757
41m layover
SFOOct 14 12:03
→SEAOct 14 14:17
UA 2744Airbus A320
9h 22m·1 stop
$604 USDIADOct 14 09:28
→LAXOct 14 12:02
UA 657Boeing 737MAX 9 Passenger
53m layover
LAXOct 14 12:55
→SEAOct 14 15:50
UA 6043Embraer 175