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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Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Sunday, November 15th, 2026
Outbound Flights
6h 6m·Nonstop
$229 USD
IADNov 15 17:50
→SEANov 15 20:56
UA 1128Boeing 737MAX 8 Passenger
9h 9m·1 stop
$239 USDIADNov 15 06:10
→ORDNov 15 07:29
UA 565Airbus A321neo
1h 56m layover
ORDNov 15 09:25
→SEANov 15 12:19
UA 2099Boeing 737
9h 5m·1 stop
$239 USDIADNov 15 06:15
→SFONov 15 09:19
UA 1095Boeing 757
47m layover
SFONov 15 10:06
→SEANov 15 12:20
UA 2340Airbus A320
8h 17m·1 stop
$239 USDIADNov 15 10:15
→ORDNov 15 11:39
UA 1252Airbus A321neo
1h 6m layover
ORDNov 15 12:45
→SEANov 15 15:32
UA 1660Boeing 737
9h 24m·1 stop
$296 USDIADNov 15 08:15
→SFONov 15 11:22
UA 1147Boeing 757
1h layover
SFONov 15 12:22
→SEANov 15 14:39
UA 2744Airbus A320
9h 39m·1 stop
$344 USDIADNov 15 18:20
→SFONov 15 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 15 22:35
→SEANov 16 00:59
UA 5579Embraer 175
8h 48m·1 stop
$438 USDIADNov 15 13:15
→ORDNov 15 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 15 16:15
→SEANov 15 19:03
UA 1801Airbus A321neo
8h 17m·1 stop
$624 USDIADNov 15 12:40
→DENNov 15 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 15 15:53
→SEANov 15 17:57
UA 2013Boeing 737