Washington (IAD) to Seattle / Tacoma (SEA) flight deal in economy from $154

Delta Air LinesDLDelta Air Lines
One Way•Economy
United StatesIAD

Washington Dulles International Airport

Washington, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$300 USD
-49%$154 USD
Verified 2 days ago
Rare Availability
5% of dates checked are available within 10% of the lowest price

Friday, December 4th, 2026

Outbound Flights

6h 10m·Nonstop
$154 USD
Delta Air Lines
IADDec 4 07:00
→
SEADec 4 10:10
DL 1015Airbus A220-300 Passenger
9h 31m·1 stop
$164 USD
Delta Air Lines
IADDec 4 08:07
→
ATLDec 4 10:09
DL 1354Airbus A319
1h 47m layover
Delta Air Lines
ATLDec 4 11:56
→
SEADec 4 14:38
DL 629Airbus A321neo
9h 36m·1 stop
$164 USD
Delta Air Lines
IADDec 4 10:11
→
ATLDec 4 12:04
DL 1324Airbus A319
2h 7m layover
Delta Air Lines
ATLDec 4 14:11
→
SEADec 4 16:47
DL 472Boeing 737
8h 10m·1 stop
$164 USD
Delta Air Lines
IADDec 4 12:00
→
MSPDec 4 14:00
DL 3699Embraer 175
1h 16m layover
Delta Air Lines
MSPDec 4 15:16
→
SEADec 4 17:10
DL 877Boeing 737
7h 47m·1 stop
$164 USD
Delta Air Lines
IADDec 4 19:06
→
MSPDec 4 21:04
DL 3783Embraer 175
46m layover
Delta Air Lines
MSPDec 4 21:50
→
SEADec 4 23:53
DL 505Airbus A321neo
10h 43m·1 stop
$164 USD
Delta Air Lines
IADDec 4 12:35
→
JFKDec 4 14:05
DL 5618Embraer 175
2h 54m layover
Delta Air Lines
JFKDec 4 16:59
→
SEADec 4 20:18
DL 740Airbus A321neo
11h 12m·1 stop
$164 USD
Delta Air Lines
IADDec 4 12:38
→
ATLDec 4 14:35
DL 1444Airbus A320
3h 38m layover
Delta Air Lines
ATLDec 4 18:13
→
SEADec 4 20:50
DL 714Boeing 757
8h 5m·1 stop
$299 USD
Delta Air Lines
IADDec 4 07:26
→
MSPDec 4 09:37
DL 3996Embraer 175
56m layover
Delta Air Lines
MSPDec 4 10:33
→
SEADec 4 12:31
DL 889Boeing 737
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