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
Monday, November 30th, 2026
Outbound Flights
20h 31m·1 stop
$422 USD
IADNov 30 22:47
→ORDDec 1 00:02
UA 421Airbus A319
13h 28m layover
ORDDec 1 13:30
→SEADec 1 16:18
UA 2844Airbus A321neo
10h 30m·1 stop
$545 USDIADNov 30 15:37
→ORDNov 30 17:00
UA 1786Boeing 737MAX 9 Passenger
3h 20m layover
ORDNov 30 20:20
→SEANov 30 23:07
UA 2263Boeing 737MAX 9 Passenger
6h 6m·Nonstop
$618 USDIADNov 30 17:50
→SEANov 30 20:56
UA 1128Boeing 737MAX 8 Passenger
8h 48m·1 stop
$751 USDIADNov 30 13:15
→ORDNov 30 14:38
UA 2331Boeing 737MAX 8 Passenger
1h 37m layover
ORDNov 30 16:15
→SEANov 30 19:03
UA 1801Airbus A321neo
9h 8m·1 stop
$753 USDIADNov 30 06:11
→ORDNov 30 07:30
UA 565Airbus A321neo
1h 55m layover
ORDNov 30 09:25
→SEANov 30 12:19
UA 2099Boeing 737
10h 9m·1 stop
$777 USDIADNov 30 08:23
→ORDNov 30 09:45
UA 1775Airbus A321neo
3h layover
ORDNov 30 12:45
→SEANov 30 15:32
UA 1660Boeing 737MAX 8 Passenger
9h 39m·1 stop
$784 USDIADNov 30 18:20
→SFONov 30 21:29
UA 2786Boeing 737MAX 9 Passenger
1h 6m layover
SFONov 30 22:35
→SEADec 1 00:59
UA 5579Embraer 175
8h 17m·1 stop
$836 USDIADNov 30 10:15
→ORDNov 30 11:38
UA 1252Boeing 737MAX 9 Passenger
1h 7m layover
ORDNov 30 12:45
→SEANov 30 15:32
UA 1660Boeing 737MAX 8 Passenger
8h 17m·1 stop
$964 USDIADNov 30 12:40
→DENNov 30 14:48
UA 1587Airbus A321neo
1h 5m layover
DENNov 30 15:53
→SEANov 30 17:57
UA 2013Boeing 737MAX 9 Passenger