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
Tue
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Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Friday, November 27th, 2026
Outbound Flights
9h 7m·1 stop
$252 USD
IADNov 27 06:12
→ORDNov 27 07:30
UA 565Boeing 737MAX 9 Passenger
1h 55m layover
ORDNov 27 09:25
→SEANov 27 12:19
UA 2099Boeing 737
10h 9m·1 stop
$298 USDIADNov 27 08:23
→ORDNov 27 09:45
UA 1775Airbus A321neo
3h layover
ORDNov 27 12:45
→SEANov 27 15:32
UA 1660Boeing 737
6h 6m·Nonstop
$319 USDIADNov 27 17:50
→SEANov 27 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 48m·1 stop
$355 USDIADNov 27 13:15
→ORDNov 27 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 27 16:15
→SEANov 27 19:03
UA 1801Airbus A321neo
10h 12m·1 stop
$425 USDIADNov 27 09:00
→LAXNov 27 11:54
UA 1897Airbus A321neo
1h 11m layover
LAXNov 27 13:05
→SEANov 27 16:12
UA 6043Embraer 175
9h 5m·1 stop
$428 USDIADNov 27 06:15
→SFONov 27 09:19
UA 1095Boeing 757
47m layover
SFONov 27 10:06
→SEANov 27 12:20
UA 2340Airbus A320
9h 39m·1 stop
$439 USDIADNov 27 18:20
→SFONov 27 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 27 22:35
→SEANov 28 00:59
UA 5579Embraer 175
8h 34m·1 stop
$607 USDIADNov 27 08:20
→DENNov 27 10:27
UA 792Boeing 757
1h 23m layover
DENNov 27 11:50
→SEANov 27 13:54
UA 2302Boeing 737