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
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Fair Availability
38% of dates checked are available within 10% of the lowest price
Wednesday, November 18th, 2026
Outbound Flights
6h 6m·Nonstop
$209 USD
IADNov 18 17:50
→SEANov 18 20:56
UA 1128Boeing 737MAX 9 Passenger
8h 17m·1 stop
$219 USDIADNov 18 10:15
→ORDNov 18 11:38
UA 1252Boeing 737
1h 7m layover
ORDNov 18 12:45
→SEANov 18 15:32
UA 1660Boeing 737
8h 48m·1 stop
$219 USDIADNov 18 13:15
→ORDNov 18 14:38
UA 2331Boeing 737
1h 37m layover
ORDNov 18 16:15
→SEANov 18 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$219 USDIADNov 18 06:11
→ORDNov 18 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 18 09:25
→SEANov 18 12:19
UA 2099Boeing 737
9h 24m·1 stop
$219 USDIADNov 18 08:15
→SFONov 18 11:22
UA 1147Boeing 757
1h layover
SFONov 18 12:22
→SEANov 18 14:39
UA 2744Airbus A320
9h 21m·1 stop
$219 USDIADNov 18 14:26
→SFONov 18 17:35
UA 2862Boeing 737
55m layover
SFONov 18 18:30
→SEANov 18 20:47
UA 762Airbus A320
8h 17m·1 stop
$239 USDIADNov 18 12:40
→DENNov 18 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 18 15:53
→SEANov 18 17:57
UA 2013Boeing 737
15h 41m·1 stop
$365 USDIADNov 18 22:35
→EWRNov 18 23:52
UA 1997Airbus A319
8h 3m layover·Overnight
EWRNov 19 07:55
→SEANov 19 11:16
UA 1330Boeing 737