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
Wed
Thu
Fri
Sat
Sun
Fair Availability
38% of dates checked are available within 10% of the lowest price
Thursday, November 19th, 2026
Outbound Flights
6h 6m·Nonstop
$289 USD
IADNov 19 17:50
→SEANov 19 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 17m·1 stop
$299 USDIADNov 19 10:15
→ORDNov 19 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 19 12:45
→SEANov 19 15:32
UA 1660Boeing 737
8h 48m·1 stop
$299 USDIADNov 19 13:15
→ORDNov 19 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 19 16:15
→SEANov 19 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$299 USDIADNov 19 06:11
→ORDNov 19 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 19 09:25
→SEANov 19 12:19
UA 2099Boeing 737
9h 5m·1 stop
$299 USDIADNov 19 06:15
→SFONov 19 09:19
UA 1095Boeing 757
47m layover
SFONov 19 10:06
→SEANov 19 12:20
UA 2340Airbus A320
9h 24m·1 stop
$299 USDIADNov 19 08:15
→SFONov 19 11:22
UA 1147Boeing 757
1h layover
SFONov 19 12:22
→SEANov 19 14:39
UA 2744Airbus A320
9h 39m·1 stop
$299 USDIADNov 19 18:20
→SFONov 19 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 19 22:35
→SEANov 20 00:59
UA 5579Embraer 175
15h 41m·1 stop
$364 USDIADNov 19 22:35
→EWRNov 19 23:52
UA 1997Airbus A319
8h 3m layover·Overnight
EWRNov 20 07:55
→SEANov 20 11:16
UA 1330Boeing 737