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

Delta Air LinesDLDelta Air Lines
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesIAD

Washington Dulles International Airport

Washington, United States
$291 USD
-47%$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

5h 1m·Nonstop
$154 USD
Delta Air Lines
SEADec 4 16:30
→
IADDec 5 00:31
DL 541Airbus A220-300 Passenger
9h 26m·1 stop
$164 USD
Delta Air Lines
SEADec 4 06:00
→
MSPDec 4 11:19
DL 943Airbus A321neo
3h 23m layover
Delta Air Lines
MSPDec 4 14:42
→
IADDec 4 18:26
DL 3783Embraer 175
7h 11m·1 stop
$164 USD
Delta Air Lines
SEADec 4 08:30
→
ATLDec 4 16:19
DL 562Boeing 757
40m layover
Delta Air Lines
ATLDec 4 16:59
→
IADDec 4 18:41
DL 2902Airbus A319
6h 47m·1 stop
$164 USD
Delta Air Lines
SEADec 4 13:36
→
DTWDec 4 20:55
DL 533Boeing 737
48m layover
Delta Air Lines
DTWDec 4 21:43
→
IADDec 4 23:23
DL 4704Canadair RJ 900
9h 35m·1 stop
$164 USD
Delta Air Lines
SEADec 4 22:55
→
JFKDec 5 07:03
DL 452Airbus A321neo
2h 57m layover
Delta Air Lines
JFKDec 5 10:00
→
IADDec 5 11:30
DL 5029Canadair RJ 900
7h 23m·1 stop
$374 USD
Delta Air Lines
SEADec 4 06:00
→
DTWDec 4 13:11
DL 812Boeing 737
1h 44m layover
Delta Air Lines
DTWDec 4 14:55
→
IADDec 4 16:23
DL 1826Boeing 717
8h 15m·1 stop
$374 USD
Delta Air Lines
SEADec 4 22:40
→
ATLDec 5 06:18
DL 567Airbus A321neo
1h 52m layover
Delta Air Lines
ATLDec 5 08:10
→
IADDec 5 09:55
DL 1324Airbus A319
8h 22m·1 stop
$374 USD
Delta Air Lines
SEADec 4 23:15
→
DTWDec 5 06:30
DL 810Airbus A321neo
2h 20m layover
Delta Air Lines
DTWDec 5 08:50
→
IADDec 5 10:37
DL 5517Canadair RJ 900
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