Cheap Flights from Seattle, WA to Washington D.C., DC from $78

On Cheapflightsplus.com you will find 7 direct and 259 connecting flights from Seattle to Washington D.C.. You can compare airfare deals from 8 airlines and multiple travel sites from $79, book and save on cheap plane tickets and last minute offers. Also check out SEA-WAS flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Washington D.C. Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $78 (one-way), $134 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Seattle to Washington D.C.. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
08:10 — 15:56
08:10 — 15:56 AS1188 Alaska Airlines
Seattle — Washington D.C.
4h 46m
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from$79
13:10 — 20:59
13:10 — 20:59 UA260 United Airlines
Seattle — Washington D.C.
4h 49m
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from$192
14:00 — 21:58
14:00 — 21:58 AS2 Alaska Airlines
Seattle — Washington D.C.
4h 58m
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from$209
15:40 — 23:26
15:40 — 23:26 AS198 Alaska Airlines
Seattle — Washington D.C.
4h 46m
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from$79
06:00 — 17:45
06:00 — 13:51 AA2844 American Airlines
Seattle — Charlotte
2h 29m stop
16:20 — 17:45 AA1775 American Airlines
Charlotte — Washington D.C.
8h 45m
including layover
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from$100
07:00 — 18:30
07:00 — 13:15 UA2494 United Airlines
Seattle — Houston
1h 15m stop
14:30 — 18:30 UA6092 United Airlines
Houston — Washington D.C.
8h 30m
including layover
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from$101
08:00 — 19:00
08:00 — 13:50 AA1667 American Airlines
Seattle — Dallas
1h 6m stop
14:56 — 19:00 AA2907 American Airlines
Dallas — Washington D.C.
8h
including layover
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from$101
09:17 — 19:45
09:17 — 17:15 AA560 American Airlines
Seattle — Charlotte
1h 7m stop
18:22 — 19:45 AA443 American Airlines
Charlotte — Washington D.C.
7h 28m
including layover
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from$100
10:55 — 21:00
10:55 — 17:01 UA1598 United Airlines
Seattle — Chicago
1h 4m stop
18:05 — 21:00 UA2058 United Airlines
Chicago — Washington D.C.
7h 5m
including layover
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from$101
11:00 — 22:28
11:00 — 16:58 AA2410 American Airlines
Seattle — Dallas
1h 27m stop
18:25 — 22:28 AA1838 American Airlines
Dallas — Washington D.C.
8h 28m
including layover
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from$101
12:35 — 23:42
12:35 — 18:50 UA335 United Airlines
Seattle — Houston
55m stop
19:45 — 23:42 UA6051 United Airlines
Houston — Washington D.C.
8h 7m
including layover
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from$101
13:15 — 23:27
13:15 — 16:54 UA2493 United Airlines
Seattle — Denver
1h 1m stop
17:55 — 23:27 UA2135 United Airlines
Denver — Washington D.C.
7h 12m
including layover
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from$101
05:15 — 20:00
05:15 — 08:05 AA2859 American Airlines
Seattle — Phoenix
37m stop
08:42 — 14:25 AA739 American Airlines
Phoenix — Chicago
2h 36m stop
17:01 — 20:00 AA2499 American Airlines
Chicago — Washington D.C.
11h 45m
including layover
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from$100
17:04 — 09:55
+1 day
17:04 — 19:55 DL1380 Delta Air Lines Inc.
Seattle — Salt Lake City
3h 40m stop
23:35 — 05:10 DL1176 Delta Air Lines Inc.
Salt Lake City — Atlanta
3h 9m stop
08:19 — 09:55 DL2224 Delta Air Lines Inc.
Atlanta — Washington D.C.
13h 51m
including layover
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from$139
23:56 — 14:18
+1 day
23:56 — 07:49 AA610 American Airlines
Seattle — Charlotte
2h 2m stop
09:51 — 11:47 AA1639 American Airlines
Charlotte — New York
1h 13m stop
13:00 — 14:18 AA2116 American Airlines
New York — Washington D.C.
11h 22m
including layover
Find flight
from$116
*Departure and arrival times - local. Updated on November 29, 2022

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Washington D.C. depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Washington D.C. is 3735 miles. Time difference between the cities is 3h. Airplanes depart 00:15 to 23:59 from 3 Seattle airports and arrive 00:15 to 23:59 to 2 Washington D.C. airports. Average flight time is 4h 49m.

  • The fastest flight 4h 46m
  • Average flight time 4h 49m
  • The earliest flight 00:15
  • The latest flight 23:59
  • Distance 2321 ml

What is the lowest airfare Seattle to Washington D.C.?

The cheapest plane ticket found by our users is $79. This airfare is for economy class on one-way AS198 flight by Alaska Airlines for August 25, 2020 which leaves Seattle-Tacoma Intl in Seattle at 15:40 am and arrives at Washington D.C. Dulles International at 23:26.

Economy class
$79
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Business class
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First class
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Popular Airlines on the Route

The flight Seattle — Washington D.C. is served by 8 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by American Airlines - 42 departures per week at the price of from $ 100 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 968.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is AS1188 by Alaska Airlines takes 4h 46m and the cheapest is AS198 by Alaska Airlines for $79.

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Connecting Flights

There are 259 flights with layovers on the route. The fastest connecting flight is DL1422 by Delta Air Lines Inc. takes 6h 6m and the cheapest is AS198 by Alaska Airlines for $100.

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Airports

You can fly from Seattle to Washington D.C. from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
    from $79
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  • Kenmore Air Harbor SPB-LKE
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Washington D.C. airports

  • Dulles International-IAD
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  • Ronald Reagan-DCA
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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