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
Mon
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Fair Availability
38% of dates checked are available within 10% of the lowest price
Thursday, November 26th, 2026
Outbound Flights
6h 6m·Nonstop
$209 USD
IADNov 26 17:50
→SEANov 26 20:56
UA 1128Boeing 737MAX 8 Passenger
9h 8m·1 stop
$219 USDIADNov 26 06:11
→ORDNov 26 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 26 09:25
→SEANov 26 12:19
UA 2099Boeing 737
9h 5m·1 stop
$219 USDIADNov 26 06:15
→SFONov 26 09:19
UA 1095Boeing 757
47m layover
SFONov 26 10:06
→SEANov 26 12:20
UA 2340Airbus A320
9h 24m·1 stop
$219 USDIADNov 26 08:15
→SFONov 26 11:22
UA 1147Boeing 757
1h layover
SFONov 26 12:22
→SEANov 26 14:39
UA 2744Airbus A320
10h 1m·1 stop
$219 USDIADNov 26 09:25
→SFONov 26 12:32
UA 271Boeing 757
1h 38m layover
SFONov 26 14:10
→SEANov 26 16:26
UA 433Boeing 737MAX 9 Passenger
10h 56m·1 stop
$219 USDIADNov 26 08:23
→ORDNov 26 09:45
UA 1775Airbus A321neo
3h 45m layover
ORDNov 26 13:30
→SEANov 26 16:19
UA 1660Airbus A321neo
8h 34m·1 stop
$260 USDIADNov 26 08:20
→DENNov 26 10:29
UA 792Airbus A321neo
1h 21m layover
DENNov 26 11:50
→SEANov 26 13:54
UA 2302Boeing 737
20h 18m·1 stop
$382 USDIADNov 26 17:56
→LAXNov 26 20:45
UA 2276Boeing 757
11h 30m layover·Overnight
LAXNov 27 08:15
→SEANov 27 11:14
UA 726Boeing 737