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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Fair Availability
38% of dates checked are available within 10% of the lowest price
Monday, November 9th, 2026
Outbound Flights
6h 6m·Nonstop
$289 USD
IADNov 9 17:50
→SEANov 9 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 17m·1 stop
$299 USDIADNov 9 10:15
→ORDNov 9 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 9 12:45
→SEANov 9 15:32
UA 1660Boeing 737
8h 48m·1 stop
$299 USDIADNov 9 13:15
→ORDNov 9 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 9 16:15
→SEANov 9 19:03
UA 1801Airbus A321neo
9h 7m·1 stop
$299 USDIADNov 9 06:12
→ORDNov 9 07:30
UA 565Boeing 737MAX 9 Passenger
1h 55m layover
ORDNov 9 09:25
→SEANov 9 12:19
UA 2099Boeing 737
9h 5m·1 stop
$299 USDIADNov 9 06:15
→SFONov 9 09:19
UA 1095Boeing 757
47m layover
SFONov 9 10:06
→SEANov 9 12:20
UA 2340Airbus A320
9h 24m·1 stop
$299 USDIADNov 9 08:15
→SFONov 9 11:22
UA 1147Boeing 757
1h layover
SFONov 9 12:22
→SEANov 9 14:39
UA 2744Airbus A320
9h 9m·1 stop
$299 USDIADNov 9 14:38
→SFONov 9 17:47
UA 2862Boeing 737
43m layover
SFONov 9 18:30
→SEANov 9 20:47
UA 762Airbus A320
9h 39m·1 stop
$299 USDIADNov 9 18:20
→SFONov 9 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 9 22:35
→SEANov 10 00:59
UA 5903Embraer 175