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 11th, 2026
Outbound Flights
6h 6m·Nonstop
$209 USD
IADNov 11 17:50
→SEANov 11 20:56
UA 1128Boeing 737MAX 9 Passenger
8h 17m·1 stop
$219 USDIADNov 11 10:15
→ORDNov 11 11:38
UA 1252Boeing 737
1h 7m layover
ORDNov 11 12:45
→SEANov 11 15:32
UA 1660Boeing 737
8h 48m·1 stop
$219 USDIADNov 11 13:15
→ORDNov 11 14:38
UA 2331Boeing 737
1h 37m layover
ORDNov 11 16:15
→SEANov 11 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$219 USDIADNov 11 06:11
→ORDNov 11 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 11 09:25
→SEANov 11 12:19
UA 2099Boeing 737
9h 24m·1 stop
$219 USDIADNov 11 08:15
→SFONov 11 11:22
UA 1147Boeing 757
1h layover
SFONov 11 12:22
→SEANov 11 14:39
UA 2744Airbus A320
9h 21m·1 stop
$219 USDIADNov 11 14:26
→SFONov 11 17:35
UA 2862Boeing 737
55m layover
SFONov 11 18:30
→SEANov 11 20:47
UA 762Airbus A320
19h 45m·1 stop
$307 USDIADNov 11 22:47
→ORDNov 12 00:01
UA 421Boeing 737MAX 8 Passenger
12h 44m layover
ORDNov 12 12:45
→SEANov 12 15:32
UA 1660Boeing 737
8h 17m·1 stop
$322 USDIADNov 11 12:40
→DENNov 11 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 11 15:53
→SEANov 11 17:57
UA 2013Boeing 737