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
Friday, November 20th, 2026
Outbound Flights
6h 6m·Nonstop
$289 USD
IADNov 20 17:50
→SEANov 20 20:56
UA 1128Boeing 737MAX 8 Passenger
9h 8m·1 stop
$299 USDIADNov 20 06:11
→ORDNov 20 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 20 09:25
→SEANov 20 12:19
UA 2099Boeing 737
8h 17m·1 stop
$434 USDIADNov 20 10:15
→ORDNov 20 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 20 12:45
→SEANov 20 15:32
UA 1660Boeing 737
8h 48m·1 stop
$449 USDIADNov 20 13:15
→ORDNov 20 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 20 16:15
→SEANov 20 19:03
UA 1801Airbus A321neo
9h 5m·1 stop
$581 USDIADNov 20 06:15
→SFONov 20 09:19
UA 1095Boeing 757
47m layover
SFONov 20 10:06
→SEANov 20 12:20
UA 2340Airbus A320
9h 24m·1 stop
$634 USDIADNov 20 08:15
→SFONov 20 11:22
UA 1147Boeing 757
1h layover
SFONov 20 12:22
→SEANov 20 14:39
UA 2744Airbus A320
8h 17m·1 stop
$648 USDIADNov 20 12:40
→DENNov 20 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 20 15:53
→SEANov 20 17:57
UA 2013Boeing 737
8h 34m·1 stop
$722 USDIADNov 20 08:20
→DENNov 20 10:27
UA 792Boeing 737
1h 23m layover
DENNov 20 11:50
→SEANov 20 13:54
UA 2302Boeing 737MAX 8 Passenger