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
Friday, November 6th, 2026
Outbound Flights
6h 6m·Nonstop
$279 USD
IADNov 6 17:50
→SEANov 6 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 48m·1 stop
$289 USDIADNov 6 13:15
→ORDNov 6 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 6 16:15
→SEANov 6 19:03
UA 1801Airbus A321neo
9h 9m·1 stop
$289 USDIADNov 6 14:38
→SFONov 6 17:47
UA 2862Boeing 737
43m layover
SFONov 6 18:30
→SEANov 6 20:47
UA 762Airbus A320
10h 2m·1 stop
$289 USDIADNov 6 09:25
→SFONov 6 12:32
UA 271Boeing 757
1h 38m layover
SFONov 6 14:10
→SEANov 6 16:27
UA 433Airbus A320
9h 39m·1 stop
$289 USDIADNov 6 18:20
→SFONov 6 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 6 22:35
→SEANov 7 00:59
UA 5903Embraer 175
10h 12m·1 stop
$304 USDIADNov 6 09:00
→LAXNov 6 11:54
UA 1897Airbus A321neo
1h 11m layover
LAXNov 6 13:05
→SEANov 6 16:12
UA 6043Embraer 175
9h 24m·1 stop
$332 USDIADNov 6 08:15
→SFONov 6 11:22
UA 1147Boeing 757
1h layover
SFONov 6 12:22
→SEANov 6 14:39
UA 2744Airbus A320
8h 17m·1 stop
$390 USDIADNov 6 10:15
→ORDNov 6 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 6 12:45
→SEANov 6 15:32
UA 1660Boeing 737