
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $177 (Alaska Airlines) |
One-way from | $90 (American Airlines) |
Popular in | December |
Cheapest in | August |
Fly from
Fly to
Route
Depart
Return
Price
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 3/5
3:20 pm-11:10 pm
Nonstop4h 50m
Washington, D.C. Dulles Intl
Mon 3/9
7:00 am-10:01 am
Nonstop6h 01m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 2/26
9:27 am-5:20 pm
Nonstop4h 53m
Washington, D.C. Dulles Intl
Mon 3/2
6:27 pm-9:35 pm
Nonstop6h 08m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Sat 2/14
3:40 pm-11:34 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Tue 2/24
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Sat 2/14
3:40 pm-11:34 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Tue 2/17
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 2/27
3:20 pm-11:10 pm
Nonstop4h 50m
Washington, D.C. Dulles Intl
Sun 3/1
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Wed 2/11
3:20 pm-11:10 pm
Nonstop4h 50m
Washington, D.C. Dulles Intl
Sun 2/15
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Sat 2/14
3:40 pm-11:34 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Thu 2/19
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Sat 2/21
3:40 pm-11:34 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Tue 2/24
7:30 am-10:29 am
Nonstop5h 59m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 3/31
3:55 pm-11:49 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Tue 4/7
7:00 am-10:03 am
Nonstop6h 03m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Mon 2/23
5:00 am-5:00 pm
1 stop9h 00m
Washington, D.C. Dulles Intl
Tue 2/24
5:30 pm-10:30 pm
1 stop8h 00m
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Dane,Jan 2026
TYS - IAD
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Dane,Jan 2026
TYS - IAD
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Dane,Jan 2026
TYS - IAD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$487 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$313 | Average$542 | FlexibilityNo cancel fee | On-time69% |