Alaska Airlines Seattle to Washington D.C. Flights

Cheapflightsplus.com will find cheap Alaska Airlines flights from Seattle to Washington D.C.. Compare airline ticket prices and book air tickets starting from $151 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — Washington D.C. (DC) by Alaska Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in january: one-way - $151, two-way – $259.
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
10:18 am — 10:39 pm
10:06 am — 4:00 pm AS586 Alaska Airlines
Seattle — Dallas
2h 41m stop
7:05 pm — 10:52 pm AS4622 Alaska Airlines
Dallas — Washington D.C.
9h 21m
including layover
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from$329
10:59 pm — 5:40 pm
+1 day
10:59 pm — 11:56 pm AS957 Alaska Airlines
Seattle — Portland
9h 56m stop
10:00 am — 5:54 pm AS10 Alaska Airlines
Portland — Washington D.C.
15h 41m
including layover
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from$247
2:05 pm — 9:59 pm
2:05 pm — 9:59 pm AS2 Alaska Airlines
Seattle — Washington D.C.
4h 54m
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from$168
6:40 am — 5:54 pm
6:40 am — 7:31 am AS2129 Alaska Airlines
Seattle — Portland
2h 29m stop
10:00 am — 5:54 pm AS10 Alaska Airlines
Portland — Washington D.C.
8h 14m
including layover
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from$383
6:42 am — 5:40 pm
6:35 am — 7:31 am AS2111 Alaska Airlines
Seattle — Portland
2h 16m stop
9:50 am — 5:40 pm AS10 Alaska Airlines
Portland — Washington D.C.
7h 58m
including layover
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from$205
6:55 am — 8:59 pm
6:55 am — 9:09 am AS2012 Alaska Airlines
Seattle — San Francisco
1h 28m stop
10:37 am — 12:08 pm AS2149 Alaska Airlines
San Francisco — Los Angeles
57m stop
1:05 pm — 8:59 pm AS6 Alaska Airlines
Los Angeles — Washington D.C.
11h 4m
including layover
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from$244
7:00 am — 8:59 pm
7:00 am — 9:50 am AS1246 Alaska Airlines
Seattle — Los Angeles
3h 31m stop
1:10 pm — 8:59 pm AS6 Alaska Airlines
Los Angeles — Washington D.C.
10h 59m
including layover
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from$180
7:00 am — 8:59 pm
7:00 am — 9:14 am AS3369 Alaska Airlines
Seattle — San Francisco
1h 23m stop
10:37 am — 12:10 pm AS3326 Alaska Airlines
San Francisco — Los Angeles
1h 6m stop
1:16 pm — 8:59 pm AS6 Alaska Airlines
Los Angeles — Washington D.C.
10h 59m
including layover
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from$248
7:00 am — 5:54 pm
7:00 am — 7:55 am AS3387 Alaska Airlines
Seattle — Portland
2h 5m stop
10:00 am — 5:54 pm AS10 Alaska Airlines
Portland — Washington D.C.
7h 54m
including layover
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from$383
7:42 am — 5:53 pm
7:42 am — 8:34 am AS2180 Alaska Airlines
Seattle — Portland
1h 21m stop
9:55 am — 5:53 pm AS10 Alaska Airlines
Portland — Washington D.C.
7h 11m
including layover
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from$179
8:05 am — 5:40 pm
8:05 am — 8:58 am AS3362 Alaska Airlines
Seattle — Portland
51m stop
9:49 am — 5:40 pm AS10 Alaska Airlines
Portland — Washington D.C.
6h 35m
including layover
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from$205
8:10 am — 8:59 pm
8:02 am — 10:52 am AS1306 Alaska Airlines
Seattle — Los Angeles
1h 50m stop
1:10 pm — 8:59 pm AS6 Alaska Airlines
Los Angeles — Washington D.C.
9h 49m
including layover
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from$180
8:45 pm — 5:54 pm
+1 day
8:45 pm — 9:43 pm AS958 Alaska Airlines
Seattle — Portland
12h 17m stop
10:00 am — 5:54 pm AS10 Alaska Airlines
Portland — Washington D.C.
18h 9m
including layover
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from$317
8:59 pm — 5:40 pm
+1 day
8:59 pm — 9:54 pm AS146 Alaska Airlines
Seattle — Portland
11h 55m stop
9:49 am — 5:40 pm AS10 Alaska Airlines
Portland — Washington D.C.
17h 41m
including layover
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from$247
9:16 pm — 4:32 pm
+1 day
9:16 pm — 11:59 pm AS1292 Alaska Airlines
Seattle — Los Angeles
6h 1m stop
6:00 am — 7:30 am AS2276 Alaska Airlines
Los Angeles — San Francisco
50m stop
8:20 am — 4:32 pm AS8 Alaska Airlines
San Francisco — Washington D.C.
16h 16m
including layover
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from$246
9:25 pm — 8:59 pm
+1 day
9:25 pm — 0:12 am AS1292 Alaska Airlines
Seattle — Los Angeles
13h 4m stop
1:16 pm — 8:59 pm AS6 Alaska Airlines
Los Angeles — Washington D.C.
20h 34m
including layover
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from$214
9:40 pm — 5:32 am
+1 day
9:40 pm — 5:32 am AS307 Alaska Airlines
Seattle — Washington D.C.
4h 52m
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from$151
9:57 pm — 5:54 pm
+1 day
9:57 pm — 10:56 pm AS149 Alaska Airlines
Seattle — Portland
11h 4m stop
10:00 am — 5:54 pm AS10 Alaska Airlines
Portland — Washington D.C.
16h 57m
including layover
Find flight
from$317
9:59 am — 9:30 pm
8:50 am — 11:02 am AS1132 Alaska Airlines
Seattle — San Francisco
1h 3m stop
1:25 pm — 9:30 pm AS434 Alaska Airlines
San Francisco — Washington D.C.
8h 31m
including layover
Find flight
from$402
9:59 pm — 5:40 pm
+1 day
9:59 pm — 10:56 pm AS955 Alaska Airlines
Seattle — Portland
10h 53m stop
9:49 am — 5:40 pm AS10 Alaska Airlines
Portland — Washington D.C.
16h 41m
including layover
Find flight
from$247
*Departure and arrival times are local. Last updated on 12/22/2024

Flight Information

There are 2 flights by Alaska Airlines from Seattle to Washington D.C. every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at Ronald Reagan and Dulles International.

Departures start from 10:18 am to 9:59 pm. Nonstop flight is 4h 52m. The time difference between Seattle and Washington D.C. is 3h.

  • The fastest flight 4h 52m
  • Average flight time 4h 53m
  • The earliest flight 10:18 am
  • The latest flight 9:59 pm
  • Distance 2321 ml

The cheapest months for traveling to Washington D.C. are december (from 133 $), february (from 151 $), january (from 168 $).

The most expensive and popular months are november (from 263 $), january (from 168 $), february (from 151 $).

The cheapest flight by Alaska Airlines that our users were able to find is $151. This airfare is economy class on one-way AS307 flight for February 21, 2025 leaving Seattle-Tacoma Intl in Seattle at 9:40 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Alaska Airlines there are other 3 airline carriers between Seattle and Washington D.C.. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to Washington D.C..

Nonstop flights

There are 4 direct flights every day from Seattle. Airlines and fares are below:

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Connecting Flights

List of flights with layovers (1 and more stops):

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How to book an air 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 airfare.
  • 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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