
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $216 (United Airlines) |
One-way from | $84 (Mytrip) |
Popular in | December |
Cheapest in | September |
Average price | $450 |
Good round-trip deal | $363 or less |
Good one-way deal | $193 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Thu 1/22
8:59 am-5:29 pm
1 stop11h 30m
Seattle/Tacoma Intl
Sat 1/31
6:00 am-5:56 pm
1 stop8h 56m
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 2/18
7:05 am-3:10 pm
1 stop11h 05m
Seattle/Tacoma Intl
Sat 2/21
6:00 am-4:28 pm
1 stop7h 28m
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 1/21
12:23 pm-8:00 pm
1 stop10h 37m
Seattle/Tacoma Intl
Sat 1/24
6:05 am-4:46 pm
1 stop7h 41m
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sat 1/10
5:27 pm-9:49 pm
1 stop7h 22m
Seattle/Tacoma Intl
Sat 1/17
6:05 am-4:46 pm
1 stop7h 41m
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Fri 1/9
11:55 am-4:45 pm
1 stop7h 50m
Seattle/Tacoma Intl
Wed 1/14
6:05 am-6:42 pm
1 stop9h 37m
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Tue 2/24
6:05 am-10:42 am
1 stop7h 37m
Seattle/Tacoma Intl
Sat 2/28
6:05 am-6:29 pm
1 stop9h 24m
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Sat 2/14
3:10 pm-8:46 pm
1 stop8h 36m
Seattle/Tacoma Intl
Tue 2/17
9:55 pm-10:26 am
1 stop9h 31m
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 2/19
5:55 pm-8:56 pm
Nonstop6h 01m
Seattle/Tacoma Intl
Sun 2/22
7:00 am-5:25 pm
1 stop7h 25m
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Fri 2/20
5:55 pm-8:56 pm
Nonstop6h 01m
Seattle/Tacoma Intl
Sun 2/22
11:59 pm-11:50 am
1 stop8h 51m
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Mon 1/12
6:56 pm-11:21 am
1 stop19h 25m
Seattle/Tacoma Intl
Thu 1/15
7:50 pm-4:01 pm
1 stop17h 11m
Currently, March is the cheapest month in which you can book a flight from District of Columbia to State of Washington (average of $103). Flying from District of Columbia to State of Washington in July is currently the most expensive (average of $231). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from District of Columbia to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 24% versus a flight in the afternoon.
Travelers seeking maximum savings on their District of Columbia to State of Washington flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from USDC to USWA are scheduled on a Thursday (23 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Crew
Overall
Entertainment
Food
Boarding
Reviews
Anonymous,Dec 2025
SJC - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$111 | Average$266 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$125 | Average$277 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$149 | Average$444 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$181 | Average$401 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$206 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$457 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$496 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$260 | Average$521 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$313 | Average$402 | FlexibilityNo cancel fee | On-time83% |