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
Wednesday, November 4th, 2026
Outbound Flights
16h 41m·2 stops
$339 USD
IADNov 4 22:39
→ATLNov 5 00:35
UA 1635Boeing 737
6h 25m layover
ATLNov 5 07:00
→SFONov 5 09:29
UA 571Boeing 737MAX 8 Passenger
37m layover
SFONov 5 10:06
→SEANov 5 12:20
UA 2340Airbus A320
6h 6m·Nonstop
$354 USDIADNov 4 17:50
→SEANov 4 20:56
UA 1128Boeing 737MAX 9 Passenger
8h 17m·1 stop
$364 USDIADNov 4 10:15
→ORDNov 4 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 4 12:45
→SEANov 4 15:32
UA 1660Boeing 737
8h 17m·1 stop
$364 USDIADNov 4 12:40
→DENNov 4 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 4 15:53
→SEANov 4 17:57
UA 2013Boeing 737
8h 48m·1 stop
$364 USDIADNov 4 13:15
→ORDNov 4 14:38
UA 2331Boeing 737
1h 37m layover
ORDNov 4 16:15
→SEANov 4 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$364 USDIADNov 4 06:11
→ORDNov 4 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 4 09:25
→SEANov 4 12:19
UA 2099Boeing 737
9h 24m·1 stop
$364 USDIADNov 4 08:15
→SFONov 4 11:22
UA 1147Boeing 757
1h layover
SFONov 4 12:22
→SEANov 4 14:39
UA 2744Airbus A320
9h 21m·1 stop
$364 USDIADNov 4 14:26
→SFONov 4 17:35
UA 2862Boeing 737MAX 9 Passenger
55m layover
SFONov 4 18:30
→SEANov 4 20:47
UA 762Airbus A320
15h 41m·1 stop
$372 USDIADNov 4 22:35
→EWRNov 4 23:52
UA 1997Airbus A319
8h 3m layover·Overnight
EWRNov 5 07:55
→SEANov 5 11:16
UA 1330Boeing 737