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
Wed
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Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Tuesday, November 3rd, 2026
Outbound Flights
17h 46m·2 stops
$313 USD
IADNov 3 22:39
→ATLNov 4 00:35
UA 1635Boeing 737MAX 8 Passenger
6h 25m layover
ATLNov 4 07:00
→IAHNov 4 08:25
UA 532Boeing 737
1h 55m layover
IAHNov 4 10:20
→SEANov 4 13:25
UA 1062Boeing 737
6h 6m·Nonstop
$364 USDIADNov 3 17:50
→SEANov 3 20:56
UA 1128Boeing 737MAX 9 Passenger
8h 17m·1 stop
$374 USDIADNov 3 10:15
→ORDNov 3 11:38
UA 1252Boeing 737
1h 7m layover
ORDNov 3 12:45
→SEANov 3 15:32
UA 1660Boeing 737
8h 17m·1 stop
$374 USDIADNov 3 12:40
→DENNov 3 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 3 15:53
→SEANov 3 17:57
UA 2013Boeing 737
9h 8m·1 stop
$374 USDIADNov 3 06:11
→ORDNov 3 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 3 09:25
→SEANov 3 12:19
UA 2099Boeing 737
9h 5m·1 stop
$374 USDIADNov 3 06:15
→SFONov 3 09:19
UA 1095Boeing 757
47m layover
SFONov 3 10:06
→SEANov 3 12:20
UA 2340Airbus A320
9h 24m·1 stop
$374 USDIADNov 3 08:15
→SFONov 3 11:22
UA 1147Boeing 757
1h layover
SFONov 3 12:22
→SEANov 3 14:39
UA 2744Airbus A320
8h 48m·1 stop
$374 USDIADNov 3 13:15
→ORDNov 3 14:38
UA 2331Boeing 737
1h 37m layover
ORDNov 3 16:15
→SEANov 3 19:03
UA 1801Airbus A321neo
9h 21m·1 stop
$374 USDIADNov 3 14:26
→SFONov 3 17:35
UA 2862Boeing 737
55m layover
SFONov 3 18:30
→SEANov 3 20:47
UA 762Airbus A320
8h 34m·1 stop
$417 USDIADNov 3 08:20
→DENNov 3 10:29
UA 792Airbus A321neo
1h 21m layover
DENNov 3 11:50
→SEANov 3 13:54
UA 2302Boeing 737