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Flights from Seattle to Washington D.C. Starting at €67

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • Cheapest nonstop
        SEA09:54
        5h 3m
        Nonstop
        IAD17:57
        Wed, Feb 12|Seattle - Washington D.C.|Alaska Airlines
        €118€133
        12% OFF
        12% OFF
        €133€118

        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 Wed, Feb 12, arriving at Dulles International Airport. One-way Prices start from €118 including taxes and charges.

      • SEA09:50
        4h 58m
        Nonstop
        IAD17:48
        Thu, Feb 20|Seattle - Washington D.C.|Alaska Airlines
        €119€133
        11% OFF
        11% OFF
        €133€119

        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 Thu, Feb 20, arriving at Dulles International Airport. One-way Prices start from €119 including taxes and charges.

      • SEA14:02
        19h 1m
        1 stop
        DCA12:03
        Thu, Feb 27|Seattle - Washington D.C.|Frontier Airlines
        €67€133
        50% OFF
        50% OFF
        €133€67

        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 €67 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Wed, Mar 5|Seattle - Washington D.C.|Frontier Airlines
        €68
        €68

        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, Mar 5, arriving at Ronald Reagan Washington National Airport. One-way Prices start from €68 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Wed, Feb 26|Seattle - Washington D.C.|Frontier Airlines
        €68
        €68

        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 €68 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Sat, Mar 1|Seattle - Washington D.C.|Frontier Airlines
        €68
        €68

        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 €68 including taxes and charges.

      • SEA14:02
        23h 57m
        1 stop
        DCA16:59
        Thu, Mar 6|Seattle - Washington D.C.|Frontier Airlines
        €68
        €68

        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 €68 including taxes and charges.

      • SEA06:00
        27h 9m
        1 stop
        DCA12:09
        Wed, Apr 23|Seattle - Washington D.C.|Frontier Airlines
        €68
        €68

        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 €68 including taxes and charges.

      • SEA13:36
        19h 27m
        1 stop
        DCA12:03
        Sat, Feb 22|Seattle - Washington D.C.|Frontier Airlines
        €70
        €70

        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 €70 including taxes and charges.

      • SEA14:02
        19h 1m
        1 stop
        DCA12:03
        Mon, Mar 10|Seattle - Washington D.C.|Frontier Airlines
        €70
        €70

        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 €70 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        WAS02:00 pm
        Thu, Feb 13|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. UA2269

    United Airlines

    05:00

    SEA

    2.7h

    08:43

    DEN

    SMTWTFS
    Search

  2. F9690

    Frontier Airlines

    16:25

    DEN

    3.6h

    21:59

    DCA

    SMTWTFS

  3. F93406

    Frontier Airlines

    06:00

    SEA

    2.9h

    09:51

    DEN

    SMTWTFS
    Search

  4. F9686

    Frontier Airlines

    06:40

    DEN

    3.5h

    12:07

    DCA

    SMTWTFS

  5. AS004

    Alaska Airlines

    08:24

    SEA

    5.2h

    Nonstop

    16:38

    DCA

    SMTWTFS
    Search

  6. AS406

    Alaska Airlines

    10:06

    SEA

    5.1h

    Nonstop

    18:13

    IAD

    SMTWTFS
    Search

  7. F94988

    Frontier Airlines

    10:38

    SEA

    2.1h

    13:45

    SLC

    ---W--S
    Search

  8. F93982

    Frontier Airlines

    14:57

    SLC

    1.6h

    16:32

    DEN

    SMTWTFS

  9. F9686

    Frontier Airlines

    06:40

    DEN

    3.5h

    12:07

    DCA

    SMTWTFS

  10. AA2398

    American Airlines

    13:35

    SEA

    4.1h

    19:40

    ORD

    SMTWTFS
    Search

  11. AA903

    American Airlines

    20:17

    ORD

    2.0h

    23:18

    DCA

    SMTWTFS

  12. AS002

    Alaska Airlines

    13:50

    SEA

    5.2h

    Nonstop

    21:59

    DCA

    SMTWTFS
    Search

  13. DL508

    Delta Air Lines

    22:08

    SEA

    5.0h

    Nonstop

    06:10

    IAD

    SMTWTFS
    Search

  14. AA2793

    American Airlines

    22:10

    SEA

    5.2h

    06:21

    CLT

    SMTWTFS
    Search

  15. AA5223

    American Airlines

    07:15

    CLT

    1.4h

    08:42

    IAD

    SMTWTFS

  16. AS307

    Alaska Airlines

    23:30

    SEA

    5.1h

    Nonstop

    07:36

    IAD

    ---W---
    Search
Find more flights and airlines

Find the best time to fly from Seattle to Washington D.C.

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

Airlines Flying from Seattle to Washington D.C.

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Alaska Airlines logoAlaska AirlinesFrontier Airlines logoFrontier AirlinesDelta Air Lines logoDelta Air LinesAmerican Airlines logoAmerican Airlines

FAQ

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

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Washington D.C.. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
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4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
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Flight Information from Seattle to Washington D.C.

Cheapest nonstop flight price€67
Cheapest round-trip ticket price€185
Off-season for travelJanuary
Peak season for travelMay
Flight distance3,736.07 km
Average flight time5 hours 18 minutes
Popular airlineAlaska Airlines

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