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Seattle-Tacoma International Airport to Washington D.C. flight
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Cheap Flights from Seattle-Tacoma International Airport to Washington D.C.

Search for flights from Seattle-Tacoma International Airport to Washington D.C. and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort: Price (Lowest)
  • Sort: Price (Lowest)
  • Sort: Departure (Earliest)
      • SEA17:58
        15h 2m
        1 stop
        DCA12:00
        Seattle - Washington D.C.|Wed, May 1|Frontier Airlines
        NZD 82NZD 178
        54% OFF
        54% OFF
        NZD 178NZD 82
      • SEA21:49
        21h 10m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Thu, May 16|Frontier Airlines
        NZD 88NZD 178
        50% OFF
        50% OFF
        NZD 178NZD 88
      • SEA21:49
        21h 10m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Thu, May 23|Frontier Airlines
        NZD 88NZD 178
        50% OFF
        50% OFF
        NZD 178NZD 88
      • SEA21:35
        17h 26m
        1 stop
        DCA18:01
        Seattle - Washington D.C.|Tue, Apr 30|Frontier Airlines
        NZD 89
        NZD 89
      • SEA17:02
        25h 57m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Mon, May 6|Frontier Airlines
        NZD 89
        NZD 89
      • SEA21:32
        11h 28m
        1 stop
        DCA12:00
        Seattle - Washington D.C.|Sat, May 11|Frontier Airlines
        NZD 89
        NZD 89
      • SEA17:02
        25h 57m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Mon, May 13|Frontier Airlines
        NZD 89
        NZD 89
      • SEA22:34
        20h 25m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Fri, May 3|Frontier Airlines
        NZD 99
        NZD 99
      • SEA22:24
        20h 35m
        1 stop
        DCA21:59
        Seattle - Washington D.C.|Fri, May 17|Frontier Airlines
        NZD 103
        NZD 103
      • SEA22:04
        10h 56m
        1 stop
        DCA12:00
        Seattle - Washington D.C.|Thu, May 2|Frontier Airlines
        NZD 118
        NZD 118
      • SEA13:00
        3h 5m
        Direct
        WAS14:00
        Seattle - Washington D.C.|Mon, May 6|Frontier Airlines
        Find More Flights
        Find More Flights

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

Selected Airlines from Seattle-Tacoma International Airport to Washington D.C.

See which airlines fly from Seattle-Tacoma International Airport to Washington D.C.. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From NZD 82
American Airlines
From NZD 165
Sun Country Airlines
From NZD 171
Alaska Airlines
From NZD 179
Delta Air Lines
From NZD 212
United Airlines
From NZD 250
Jetblue Airways
From NZD 270
Southwest Airlines
From NZD 345
Spirit Airlines
From NZD 392
ANA airlines
Find more flights and airlines

Airports in Washington D.C.

Learn about different airports in Washington D.C., find the best flight and transfer options, and plan your journey.

  • 3.44 km from central Washington D.C.CheapestClosest
    Ronald Reagan Washington National Airport
    Tickets From
    NZD 82
  • 36.68 km from central Washington D.C.
    Washington Dulles International Airport
    Tickets From
    NZD 171
Flight Schedule from Seattle-Tacoma International Airport to Washington D.C.

Check the schedule for flights from Seattle-Tacoma International Airport to Washington D.C. and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS1180

    Alaska Airlines

    05:45

    SEA

    2.9h

    08:36

    SAN

    SMTWTFS
    Search

  2. AS322

    Alaska Airlines

    10:35

    SAN

    5.0h

    18:36

    IAD

    SMTWTFS

  3. AS682

    Alaska Airlines

    06:00

    SEA

    2.7h

    09:44

    DEN

    SMTWTFS
    Search

  4. F93862

    Frontier Airlines

    12:39

    DEN

    3.4h

    18:01

    DCA

    -MT--F-

  5. AS348

    Alaska Airlines

    16:10

    SEA

    4.8h

    Direct

    23:59

    IAD

    SMTWTFS
    Search

  6. AS642

    Alaska Airlines

    20:18

    SEA

    2.7h

    23:58

    DEN

    SMTWTFS
    Search

  7. F9686

    Frontier Airlines

    06:39

    DEN

    3.5h

    12:09

    DCA

    SMTWTFS

  8. F92150

    Frontier Airlines

    21:35

    SEA

    2.8h

    01:25

    DEN

    -M-----
    Search

  9. F9686

    Frontier Airlines

    06:39

    DEN

    3.5h

    12:09

    DCA

    SMTWTFS

  10. F91176

    Frontier Airlines

    22:08

    SEA

    2.7h

    01:51

    DEN

    S---T--
    Search

  11. F9686

    Frontier Airlines

    06:39

    DEN

    3.5h

    12:09

    DCA

    SMTWTFS

  12. DL719

    Delta Air Lines

    22:22

    SEA

    5.1h

    Direct

    06:26

    IAD

    SMTWT-S
    Search

  13. AA2107

    American Airlines

    22:34

    SEA

    5.1h

    06:40

    CLT

    SMTWTFS
    Search

  14. AA5132

    American Airlines

    09:05

    CLT

    1.6h

    10:38

    IAD

    SMTWTFS

  15. AA2368

    American Airlines

    22:54

    SEA

    4.1h

    05:00

    ORD

    --TWTFS
    Search

  16. AA1187

    American Airlines

    11:38

    ORD

    1.8h

    14:24

    DCA

    SMTWTFS

  17. AA2361

    American Airlines

    23:30

    SEA

    5.2h

    07:40

    PHL

    SMTWTFS
    Search

  18. AA4541

    American Airlines

    10:47

    PHL

    1.1h

    11:56

    DCA

    SMTWT--
Find more flights and airlines

Flight Info of Flights from Seattle-Tacoma International Airport to Washington D.C.

Cheapest round-trip ticket price

NZD 287

Cheapest nonstop flight price

NZD 81

Off-season for travel

May

Peak season for travel

October

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