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
Tue
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Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Saturday, November 28th, 2026
Outbound Flights
9h 8m·1 stop
$545 USD
IADNov 28 06:11
→ORDNov 28 07:29
UA 565Airbus A321neo
1h 56m layover
ORDNov 28 09:25
→SEANov 28 12:19
UA 2099Boeing 737
6h 6m·Nonstop
$579 USDIADNov 28 17:50
→SEANov 28 20:56
UA 1128Boeing 737MAX 8 Passenger
10h 9m·1 stop
$706 USDIADNov 28 08:23
→ORDNov 28 09:45
UA 1775Airbus A321neo
3h layover
ORDNov 28 12:45
→SEANov 28 15:32
UA 1660Boeing 737
8h 46m·1 stop
$784 USDIADNov 28 13:17
→ORDNov 28 14:40
UA 2331Boeing 737
1h 35m layover
ORDNov 28 16:15
→SEANov 28 19:03
UA 1801Airbus A321neo
9h 5m·1 stop
$964 USDIADNov 28 06:15
→SFONov 28 09:19
UA 1095Boeing 757
47m layover
SFONov 28 10:06
→SEANov 28 12:20
UA 2340Airbus A320
8h 35m·1 stop
$964 USDIADNov 28 08:20
→DENNov 28 10:29
UA 792Airbus A321neo
1h 21m layover
DENNov 28 11:50
→SEANov 28 13:55
UA 2302Airbus A321neo
10h 2m·1 stop
$964 USDIADNov 28 09:25
→SFONov 28 12:32
UA 271Boeing 757
1h 38m layover
SFONov 28 14:10
→SEANov 28 16:27
UA 433Airbus A320
8h 19m·1 stop
$964 USDIADNov 28 12:40
→DENNov 28 14:48
UA 1587Airbus A321neo
1h 7m layover
DENNov 28 15:55
→SEANov 28 17:59
UA 2013Boeing 737