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
Saturday, November 21st, 2026
Outbound Flights
6h 6m·Nonstop
$209 USD
IADNov 21 17:50
→SEANov 21 20:56
UA 1128Boeing 737MAX 8 Passenger
9h 8m·1 stop
$231 USDIADNov 21 06:11
→ORDNov 21 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 21 09:25
→SEANov 21 12:19
UA 2099Boeing 737
8h 46m·1 stop
$239 USDIADNov 21 13:17
→ORDNov 21 14:40
UA 2331Boeing 737
1h 35m layover
ORDNov 21 16:15
→SEANov 21 19:03
UA 1801Airbus A321neo
23h 16m·1 stop
$323 USDIADNov 21 22:47
→ORDNov 22 00:01
UA 421Boeing 737MAX 9 Passenger
16h 14m layover
ORDNov 22 16:15
→SEANov 22 19:03
UA 1801Airbus A321neo
10h 9m·1 stop
$326 USDIADNov 21 08:23
→ORDNov 21 09:45
UA 1775Airbus A321neo
3h layover
ORDNov 21 12:45
→SEANov 21 15:32
UA 1660Boeing 737
8h 19m·1 stop
$577 USDIADNov 21 12:40
→DENNov 21 14:48
UA 1587Airbus A321neo
1h 7m layover
DENNov 21 15:55
→SEANov 21 17:59
UA 2013Boeing 737
9h 24m·1 stop
$582 USDIADNov 21 08:15
→SFONov 21 11:22
UA 1147Boeing 757
1h layover
SFONov 21 12:22
→SEANov 21 14:39
UA 2744Airbus A320
8h 35m·1 stop
$634 USDIADNov 21 08:20
→DENNov 21 10:27
UA 792Boeing 737
1h 23m layover
DENNov 21 11:50
→SEANov 21 13:55
UA 2302Airbus A321neo