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
Sunday, January 3rd, 2027
Outbound Flights
6h 7m·Nonstop
$333 USD
IADJan 3 08:50
→SEAJan 3 11:57
UA 2731Boeing 737
6h 7m·Nonstop
$333 USDIADJan 3 17:55
→SEAJan 3 21:02
UA 1128Boeing 737MAX 9 Passenger
8h 51m·1 stop
$416 USDIADJan 3 06:05
→EWRJan 3 07:20
UA 1359Boeing 737MAX 9 Passenger
1h 15m layover
EWRJan 3 08:35
→SEAJan 3 11:56
UA 1330Boeing 737
9h 26m·2 stops
$513 USDIADJan 3 12:40
→CKBJan 3 13:45
UA 6071Canadair RJ 200
35m layover
CKBJan 3 14:20
→ORDJan 3 15:28
UA 6073Canadair RJ 200
52m layover
ORDJan 3 16:20
→SEAJan 3 19:06
UA 1801Airbus A321neo
11h 56m·1 stop
$529 USDIADJan 3 10:10
→ORDJan 3 11:37
UA 1252Boeing 737
4h 43m layover
ORDJan 3 16:20
→SEAJan 3 19:06
UA 1801Airbus A321neo
9h 9m·1 stop
$557 USDIADJan 3 10:10
→ORDJan 3 11:37
UA 1252Boeing 737
1h 58m layover
ORDJan 3 13:35
→SEAJan 3 16:19
UA 1764Boeing 737
9h 1m·1 stop
$557 USDIADJan 3 13:05
→ORDJan 3 14:29
UA 2331Boeing 737MAX 9 Passenger
1h 51m layover
ORDJan 3 16:20
→SEAJan 3 19:06
UA 1801Airbus A321neo
9h·1 stop
$752 USDIADJan 3 14:40
→SFOJan 3 17:50
UA 2862Boeing 737MAX 9 Passenger
42m layover
SFOJan 3 18:32
→SEAJan 3 20:40
UA 2159Boeing 737