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Cheap flight deals from Seattle to Washington D.C. Starting at AED 264

For as little as AED 264, you can take your next adventure to Washington D.C. without breaking the bank. Choose between one-way and return tickets from Seattle below.

  • One way
  • Round-trip
      • Cheapest nonstop
        SEA21:40
        4h 54m
        Nonstop
        IAD05:34
        Tue, Apr 15|Seattle - Washington D.C.|Alaska Airlines
        AED 478AED 646
        26% OFF
        26% OFF
        AED 646AED 478

        Choose Alaska Airlines flights from Seattle to Washington D.C.. The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Apr 15, arriving at Dulles International Airport. One-way Prices start from AED 478 including taxes and charges.

      • SEA22:30
        4h 51m
        Nonstop
        IAD06:21
        Tue, Apr 15|Seattle - Washington D.C.|Delta Air Lines
        AED 478AED 646
        26% OFF
        26% OFF
        AED 646AED 478

        Choose Delta Air Lines flights from Seattle to Washington D.C.. The one-way direct flight with Delta Air Lines departs from Seattle-Tacoma International Airport on Tue, Apr 15, arriving at Dulles International Airport. One-way Prices start from AED 478 including taxes and charges.

      • SEA06:00
        12h 59m
        1 stop
        DCA21:59
        Wed, Apr 23|Seattle - Washington D.C.|Frontier Airlines
        AED 264AED 646
        59% OFF
        59% OFF
        AED 646AED 264

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Wed, Apr 23, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 264 including taxes and charges.

      • SEA14:02
        23h 57m
        1 stop
        DCA16:59
        Thu, Mar 6|Seattle - Washington D.C.|Frontier Airlines
        AED 265
        AED 265

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Mar 6, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 265 including taxes and charges.

      • SEA14:02
        19h 1m
        1 stop
        DCA12:03
        Thu, Feb 27|Seattle - Washington D.C.|Frontier Airlines
        AED 269
        AED 269

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Feb 27, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 269 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Sat, Feb 22|Seattle - Washington D.C.|Frontier Airlines
        AED 269
        AED 269

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Sat, Feb 22, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 269 including taxes and charges.

      • SEA14:02
        19h 1m
        1 stop
        DCA12:03
        Mon, Mar 10|Seattle - Washington D.C.|Frontier Airlines
        AED 270
        AED 270

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Mon, Mar 10, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 270 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Sat, Mar 1|Seattle - Washington D.C.|Frontier Airlines
        AED 270
        AED 270

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Sat, Mar 1, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 270 including taxes and charges.

      • SEA06:00
        12h 59m
        1 stop
        DCA21:59
        Tue, May 13|Seattle - Washington D.C.|Frontier Airlines
        AED 271
        AED 271

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Tue, May 13, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 271 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Wed, Feb 26|Seattle - Washington D.C.|Frontier Airlines
        AED 272
        AED 272

        Choose Frontier Airlines flights from Seattle to Washington D.C.. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Wed, Feb 26, arriving at Ronald Reagan Washington National Airport. One-way Prices start from AED 272 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        WAS02:00 pm
        Fri, Feb 28|Seattle - Washington D.C.|Alaska Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seattle to Washington D.C. flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA2748

    American Airlines

    05:22

    SEA

    3.9h

    11:18

    DFW

    SMTWTFS
    Search

  2. AA1863

    American Airlines

    12:26

    DFW

    2.8h

    16:12

    IAD

    SMTWTFS

  3. HA6613

    Hawaiian Airlines

    10:00

    SEA

    5.0h

    Nonstop

    17:59

    IAD

    SMTWTFS
    Search

  4. AA2398

    American Airlines

    13:48

    SEA

    4.0h

    19:45

    ORD

    SMTWTFS
    Search

  5. AA903

    American Airlines

    20:17

    ORD

    2.0h

    23:18

    DCA

    SMTWTFS

  6. AS002

    Alaska Airlines

    13:48

    SEA

    5.2h

    Nonstop

    21:59

    DCA

    SMTWTFS
    Search

  7. AS406

    Alaska Airlines

    16:00

    SEA

    5.0h

    Nonstop

    23:59

    IAD

    SMTWTFS
    Search

  8. AS321

    Alaska Airlines

    20:23

    SEA

    2.7h

    00:05

    DEN

    SMTWTFS
    Search

  9. F9686

    Frontier Airlines

    06:40

    DEN

    3.5h

    12:07

    DCA

    SMTWTFS

  10. DL508

    Delta Air Lines

    22:08

    SEA

    5.0h

    Nonstop

    06:10

    IAD

    SMTWTFS
    Search

  11. AA2793

    American Airlines

    22:10

    SEA

    5.2h

    06:21

    CLT

    SMTWTFS
    Search

  12. AA5223

    American Airlines

    07:17

    CLT

    1.4h

    08:42

    IAD

    SMTWTFS

  13. B6498

    Jetblue Airways

    22:20

    SEA

    5.3h

    06:37

    BOS

    SMTWTFS
    Search

  14. B61655

    Jetblue Airways

    07:00

    BOS

    1.7h

    08:42

    DCA

    SMTWTFS

  15. AS307

    Alaska Airlines

    23:30

    SEA

    5.1h

    Nonstop

    07:36

    IAD

    SMTWTFS
    Search
Find more flights and airlines

When is the cheapest time to fly from Seattle to Washington D.C.?

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Washington D.C. from Seattle have changed and are set to move below.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

How to find a cheap flight from Seattle to Washington D.C.

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.
1
Being flexible with your dates to get the cheapest Seattle to Washington D.C. ticket.
Tap "Date" on flight search bar to scan through the calender for Seattle to Washington D.C. airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Tue, Apr 15 at AED 478 for one-way flights.
2
Compare cheap Seattle to Washington D.C. flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seattle to Washington D.C.. The cheapest airline operating is Alaska Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your Seattle to Washington D.C. route, you can easily track the price of your airline tickets from without manually checking every day.
4
Don't miss cheap Seattle to Washington D.C. flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Seattle to Washington D.C. to get exclusive deals for you.

Flight Info | Seattle to Washington D.C.

Cheapest direct flight priceAED 264
Cheapest return ticket priceAED 725
Off-season for travelJanuary
Peak season for travelNovember
Flight distance3,736.07 km
Average flight time5 hours 33 minutes
Popular airlineAlaska Airlines

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