Cheap Flights from Seattle, WA to Washington D.C., DC from $107
On Cheapflightsplus.com you will find 12 direct and 28 connecting flights from Seattle to Washington D.C.. You can compare airfare deals from 5 airlines and multiple travel sites from $107, 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.
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 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 2 Washington D.C. airports. Average flight time is 4h 59m.
- The fastest flight 4h 57m
- Average flight time 4h 59m
- The earliest flight 00:20
- The latest flight 23:59
- Distance 2321 ml
Best Flights from Seattle to Washington D.C. Today
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $133 | 15:59 Seattle Seattle-Tacoma Intl | 23:59 Washington D.C. Dulles International | 5h 0m | Alaska Airlines | AS348 |
| from $149 | 23:30 Seattle Seattle-Tacoma Intl | 07:27+1 день Washington D.C. Dulles International | 4h 57m | Hawaiian Airlines | HA6718 |
| from $153 | 09:15 Seattle Seattle-Tacoma Intl | 17:13 Washington D.C. Dulles International | 4h 58m | Alaska Airlines | AS406 |
| from $107 | 06:25 Seattle Seattle-Tacoma Intl | 21:57 Washington D.C. Ronald Reagan | 12h 32m layover 6h 14m - Denver | Frontier Airlines | F93406 F9690 |
| from $177 | 05:25 Seattle Seattle-Tacoma Intl | 16:02 Washington D.C. Ronald Reagan | 7h 37m layover 1h 40m - Portland | Hawaiian Airlines | HA6833 HA6710 |
The cheapest months to travel to Washington D.C. are june (from 107 $), may (from 114 $), july (from 117 $).
The most expensive months are september (from 133 $), august (from 119 $), july (from 117 $).
What is the lowest airfare Seattle to Washington D.C.?
The cheapest plane ticket found by our users is $107. This airfare is for economy class on one-way F93406 flight by Frontier Airlines for July 31, 2025 which leaves Seattle-Tacoma Intl in Seattle at 06:25 am and arrives at Washington D.C. Ronald Reagan at 21:57.
Flight Schedule Seattle (Washington) to Washington D.C. (District of Columbia)
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Popular Airlines on the Route
The flight Seattle — Washington D.C. is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 9 departures per week at the price of from $ 133 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 4769.
Direct flights
There are 12 nonstop flights on the route. The fastest direct flight is HA6718 by Hawaiian Airlines takes 4h 57m and the cheapest is F93406 by Frontier Airlines for $133.
- AS - Alaska Airlinesfrom $133Find
- HA - Hawaiian Airlinesfrom $149Find
- UA - United Airlinesfrom $199Find
Connecting Flights
There are 28 flights with layovers on the route. The fastest connecting flight is AS429 by Alaska Airlines takes 6h 52m and the cheapest is F93406 by Frontier Airlines for $107.
- AS - Alaska Airlinesfrom $368Find
- F9 - Frontier Airlinesfrom $107Find
- SY - Sun Country Airlinesfrom $200Find
- HA - Hawaiian Airlinesfrom $177Find
- UA - United Airlinesfrom $198Find
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-BFIFind
- Seattle-Tacoma Intl-SEAfrom $107Find
- Kenmore Air Harbor SPB-LKEFind
Washington D.C. airports
- Dulles International-IADFind
- Ronald Reagan-DCAFind
Airplanes
There are flights to Washington D.C. from Seattle by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Seattle
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane 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.
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