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
Thursday, November 5th, 2026
Outbound Flights
6h 6m·Nonstop
$289 USD
IADNov 5 17:50
→SEANov 5 20:56
UA 1128Boeing 737MAX 8 Passenger
10h 12m·1 stop
$299 USDIADNov 5 09:00
→LAXNov 5 11:54
UA 1897Airbus A321neo
1h 11m layover
LAXNov 5 13:05
→SEANov 5 16:12
UA 6043Embraer 175
10h 2m·1 stop
$299 USDIADNov 5 09:25
→SFONov 5 12:25
UA 271Boeing 777
1h 45m layover
SFONov 5 14:10
→SEANov 5 16:27
UA 433Airbus A320
9h 27m·1 stop
$299 USDIADNov 5 12:50
→IAHNov 5 15:27
UA 1535Boeing 737
58m layover
IAHNov 5 16:25
→SEANov 5 19:17
UA 2638Boeing 737
8h 17m·1 stop
$315 USDIADNov 5 10:15
→ORDNov 5 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 5 12:45
→SEANov 5 15:32
UA 1660Boeing 737
9h 9m·1 stop
$319 USDIADNov 5 14:38
→SFONov 5 17:47
UA 2862Boeing 737
43m layover
SFONov 5 18:30
→SEANov 5 20:47
UA 762Airbus A320
8h 17m·1 stop
$354 USDIADNov 5 12:40
→DENNov 5 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 5 15:53
→SEANov 5 17:57
UA 2013Boeing 737
8h 48m·1 stop
$393 USDIADNov 5 13:15
→ORDNov 5 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 5 16:15
→SEANov 5 19:03
UA 1801Airbus A321neo