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 agoNovember 2026
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Fair Availability
38% of dates checked are available within 10% of the lowest price
Tuesday, November 10th, 2026
Outbound Flights
6h 6m·Nonstop
$279 USD
IADNov 10 17:50
→SEANov 10 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 17m·1 stop
$289 USDIADNov 10 10:15
→ORDNov 10 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 10 12:45
→SEANov 10 15:32
UA 1660Boeing 737
8h 48m·1 stop
$289 USDIADNov 10 13:15
→ORDNov 10 14:38
UA 2331Boeing 737
1h 37m layover
ORDNov 10 16:15
→SEANov 10 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$289 USDIADNov 10 06:11
→ORDNov 10 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 10 09:25
→SEANov 10 12:19
UA 2099Boeing 737
9h 5m·1 stop
$289 USDIADNov 10 06:15
→SFONov 10 09:19
UA 1095Boeing 757
47m layover
SFONov 10 10:06
→SEANov 10 12:20
UA 2340Airbus A320
9h 24m·1 stop
$289 USDIADNov 10 08:15
→SFONov 10 11:22
UA 1147Boeing 757
1h layover
SFONov 10 12:22
→SEANov 10 14:39
UA 2744Airbus A320
9h 21m·1 stop
$289 USDIADNov 10 14:26
→SFONov 10 17:35
UA 2862Boeing 737
55m layover
SFONov 10 18:30
→SEANov 10 20:47
UA 762Airbus A320
8h 17m·1 stop
$309 USDIADNov 10 12:40
→DENNov 10 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 10 15:53
→SEANov 10 17:57
UA 2013Boeing 737