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Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport flight

Explore the cheapest one-way and round-trip flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport over the next 90 days, with one-way fares from MYR 462 and round-trip from MYR 716. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SEA 1:49 PM
        5h 10m
        Nonstop
        DCA 9:59 PM
        Seattle - Washington D.C. | Sat, Oct 17 | Alaska Airlines
        IAD 7:02 AM
        5h 42m
        Nonstop
        SEA 9:44 AM
        Washington D.C. - Seattle | Fri, Oct 23 | Alaska Airlines
        MYR 716 MYR 1,366
        48% off
        48% off
        MYR 1,366 MYR 716
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Fri, Oct 16 | Delta Air Lines
        IAD 7:05 AM
        5h 51m
        Nonstop
        SEA 9:56 AM
        Washington D.C. - Seattle | Mon, Oct 19 | Delta Air Lines
        MYR 841 MYR 1,366
        38% off
        38% off
        MYR 1,366 MYR 841
      • SEA 1:49 PM
        5h 10m
        Nonstop
        DCA 9:59 PM
        Seattle - Washington D.C. | Fri, Oct 16 | Alaska Airlines
        IAD 7:02 AM
        5h 42m
        Nonstop
        SEA 9:44 AM
        Washington D.C. - Seattle | Mon, Oct 19 | Alaska Airlines
        MYR 936 MYR 1,366
        31% off
        31% off
        MYR 1,366 MYR 936
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Fri, Oct 23 | Delta Air Lines
        DCA 4:45 PM
        5h 50m
        Nonstop
        SEA 7:35 PM
        Washington D.C. - Seattle | Sat, Oct 31 | Delta Air Lines
        MYR 949
        31% off
        MYR 1,366 MYR 949
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Thu, Oct 22 | Delta Air Lines
        IAD 7:05 AM
        5h 51m
        Nonstop
        SEA 9:56 AM
        Washington D.C. - Seattle | Thu, Oct 29 | Delta Air Lines
        MYR 950
        30% off
        MYR 1,366 MYR 950
      • SEA 7:20 AM
        4h 53m
        Nonstop
        DCA 3:13 PM
        Seattle - Washington D.C. | Wed, Nov 11 | Delta Air Lines
        IAD 7:00 AM
        6h 5m
        Nonstop
        SEA 10:05 AM
        Washington D.C. - Seattle | Tue, Nov 17 | Delta Air Lines
        MYR 953
        30% off
        MYR 1,366 MYR 953
      • SEA 7:20 AM
        4h 53m
        Nonstop
        DCA 3:13 PM
        Seattle - Washington D.C. | Mon, Nov 16 | Delta Air Lines
        DCA 4:25 PM
        6h 2m
        Nonstop
        SEA 7:27 PM
        Washington D.C. - Seattle | Mon, Nov 23 | Delta Air Lines
        MYR 954
        30% off
        MYR 1,366 MYR 954
      • SEA 7:20 AM
        4h 53m
        Nonstop
        DCA 3:13 PM
        Seattle - Washington D.C. | Tue, Nov 17 | Delta Air Lines
        DCA 4:25 PM
        6h 2m
        Nonstop
        SEA 7:27 PM
        Washington D.C. - Seattle | Mon, Nov 23 | Delta Air Lines
        MYR 997
        27% off
        MYR 1,366 MYR 997
      • SEA 11:59 PM
        7h 7m
        1 stop
        DCA 10:06 AM
        Seattle - Washington D.C. | Wed, Oct 28 | American Airlines
        DCA 6:11 AM
        8h 27m
        1 stop
        SEA 11:38 AM
        Washington D.C. - Seattle | Wed, Nov 4 | American Airlines
        MYR 803
        41% off
        MYR 1,366 MYR 803
      • SEA 11:59 PM
        7h 7m
        1 stop
        DCA 10:06 AM
        Seattle - Washington D.C. | Fri, Oct 16 | American Airlines
        DCA 6:33 PM
        9h 3m
        1 stop
        SEA 12:36 AM
        Washington D.C. - Seattle | Mon, Oct 19 | American Airlines
        MYR 820
        40% off
        MYR 1,366 MYR 820
      • SEA 11:34 PM
        7h 26m
        1 stop
        DCA 10:00 AM
        Seattle - Washington D.C. | Mon, Nov 9 | American Airlines
        DCA 6:11 AM
        8h 26m
        1 stop
        SEA 11:37 AM
        Washington D.C. - Seattle | Sat, Nov 14 | American Airlines
        MYR 847
        38% off
        MYR 1,366 MYR 847
      • SEA 6:12 AM
        7h 15m
        1 stop
        DCA 4:27 PM
        Seattle - Washington D.C. | Sat, Oct 17 | American Airlines
        DCA 6:33 PM
        9h 3m
        1 stop
        SEA 12:36 AM
        Washington D.C. - Seattle | Fri, Oct 23 | American Airlines
        MYR 852
        38% off
        MYR 1,366 MYR 852
      • SEA 1:00 PM
        17h 25m
        1 stop
        WAS 2:00 PM
        Seattle - Washington D.C. | Thu, Oct 8 | Normal Airline
        WAS 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Washington D.C. - Seattle | Sat, Oct 10 | Normal Airline
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      • Cheapest nonstop
        SEA 1:49 PM
        5h 10m
        Nonstop
        DCA 9:59 PM
        Seattle - Washington D.C. | Thu, Oct 29 | Alaska Airlines
        MYR 566 MYR 925
        39% off
        39% off
        MYR 925 MYR 566
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Sun, Oct 25 | Delta Air Lines
        MYR 608 MYR 925
        34% off
        34% off
        MYR 925 MYR 608
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Mon, Oct 26 | Delta Air Lines
        MYR 608 MYR 925
        34% off
        34% off
        MYR 925 MYR 608
      • SEA 7:20 AM
        5h 3m
        Nonstop
        DCA 3:23 PM
        Seattle - Washington D.C. | Thu, Oct 29 | Delta Air Lines
        MYR 611
        34% off
        MYR 925 MYR 611
      • SEA 7:41 PM
        14h 9m
        1 stop
        DCA 12:50 PM
        Seattle - Washington D.C. | Sat, Oct 24 | Frontier Airlines
        MYR 462
        50% off
        MYR 925 MYR 462
      • SEA 7:41 PM
        23h 17m
        1 stop
        DCA 9:58 PM
        Seattle - Washington D.C. | Fri, Oct 16 | Frontier Airlines
        MYR 544
        41% off
        MYR 925 MYR 544
      • SEA 8:11 AM
        9h 47m
        1 stop
        DCA 8:58 PM
        Seattle - Washington D.C. | Wed, Nov 11 | American Airlines
        MYR 587
        37% off
        MYR 925 MYR 587
      • SEA 11:17 AM
        7h 43m
        1 stop
        DCA 10:00 PM
        Seattle - Washington D.C. | Sat, Oct 24 | American Airlines
        MYR 654
        28% off
        MYR 925 MYR 654
      • SEA 11:59 PM
        9h
        1 stop
        DCA 11:59 AM
        Seattle - Washington D.C. | Mon, Oct 26 | American Airlines
        MYR 669
        28% off
        MYR 925 MYR 669
      • SEA 4:27 PM
        26h 32m
        1 stop
        DCA 9:59 PM
        Seattle - Washington D.C. | Mon, Oct 19 | Frontier Airlines
        MYR 675
        27% off
        MYR 925 MYR 675
      • SEA 1:00 PM
        17h 25m
        1 stop
        WAS 2:00 PM
        Seattle - Washington D.C. | Thu, Oct 8 | Normal Airline
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Flight fares from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

Trip.com Price Insights: Flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport

Which month has the lowest one-way flight price from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport?

The data is based on the average one-way flight prices on Trip.com for flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport, the best time to book is in November, with an average price of MYR 722. Try to avoid July, when prices are highest, averaging around MYR 2,319.

MYR 2,319
MYR 1,521
MYR 722
0
    Cheapest
  • MYR 1,672
    Oct
  • MYR 722
    Nov
  • MYR 1,160
    Dec
  • MYR 1,701
    Jan
  • MYR 1,276
    Feb
  • MYR 1,172
    Mar
  • MYR 1,212
    Apr
  • MYR 742
    May
  • MYR 1,506
    Jun
  • MYR 2,319
    Jul
  • MYR 1,977
    Aug
  • MYR 1,146
    Sep

What is the cheapest day of the week to fly from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport?

The data is based on the average flight prices on Trip.com from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport across different days of the week over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to depart from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport is usually Saturday, with average fares typically lower than other days. Try to avoid departing on Monday, as prices are usually the highest on that day.

MYR 1,529
MYR 1,093
MYR 656
MYR 220
    Cheapest
  • MYR 1,529
    Mon
  • MYR 1,362
    Tue
  • MYR 1,452
    Wed
  • MYR 1,432
    Thu
  • MYR 1,315
    Fri
  • MYR 656
    Sat
  • MYR 1,393
    Sun

Which airline offers the cheapest flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport?

The cheapest airline flying from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport is Frontier Airlines (from MYR 462) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From MYR 462
Alaska Airlines
From MYR 566
American Airlines
From MYR 587
Delta Air Lines
From MYR 608
Hahn Air
From MYR 816
United Airlines
From MYR 824
Jetblue Airways
From MYR 1,087

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What is the flight schedule from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport?

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL786

    Seattle-Tacoma International Airport

    7:20 AM

    SEA

    5h 3m

    3:23 PM

    DCA

    S M T W T F S
    Search

  2. AS002

    Seattle-Tacoma International Airport

    1:46 PM

    SEA

    5h 13m

    9:59 PM

    DCA

    S M T W T F S
    Search

  3. DL810

    Seattle-Tacoma International Airport

    11:05 PM

    SEA

    4h 21m

    Nonstop

    6:26 AM

    DTW

    S M T W T F S
    Search

  4. DL1558

    Detroit Metropolitan Wayne County Airport

    7:10 AM

    DTW

    1h 35m

    Nonstop

    8:45 AM

    DCA

    S M T W T F S

  5. AA3234

    Seattle-Tacoma International Airport

    10:31 AM

    SEA

    4h 24m

    Nonstop

    4:55 PM

    ORD

    S M T W T F S
    Search

  6. AA1187

    O'Hare International Airport

    5:54 PM

    ORD

    2h 6m

    Nonstop

    9:00 PM

    DCA

    S M T W T F S

  7. AA2379

    Seattle-Tacoma International Airport

    11:28 PM

    SEA

    3h 57m

    Nonstop

    5:25 AM

    ORD

    S M T W T F S
    Search

  8. AA2345

    O'Hare International Airport

    8:32 AM

    ORD

    2h 1m

    Nonstop

    11:33 AM

    DCA

    S M T W T F S

  9. DL953

    Seattle-Tacoma International Airport

    11:53 PM

    SEA

    3h 22m

    Nonstop

    5:15 AM

    MSP

    S M T W T F S
    Search

  10. DL2958

    Minneapolis-Saint Paul International Airport

    7:35 AM

    MSP

    2h 29m

    Nonstop

    11:04 AM

    DCA

    S M T W T F S

  11. AA2379

    Seattle-Tacoma International Airport

    11:28 PM

    SEA

    3h 57m

    Nonstop

    5:25 AM

    ORD

    S M T W T F S
    Search

  12. AA2700

    O'Hare International Airport

    8:40 AM

    ORD

    2h 7m

    Nonstop

    11:47 AM

    DCA

    S M T W T F S

  13. AA1872

    Seattle-Tacoma International Airport

    5:50 AM

    SEA

    4h 17m

    Nonstop

    12:07 PM

    ORD

    S M T W T F S
    Search

  14. AA2769

    O'Hare International Airport

    2:59 PM

    ORD

    2h 4m

    Nonstop

    6:03 PM

    DCA

    S M T W T F S

  15. AA659

    Seattle-Tacoma International Airport

    10:36 PM

    SEA

    5h 3m

    Nonstop

    6:39 AM

    CLT

    S M T W T F S
    Search

  16. AA3043

    Charlotte Douglas International Airport

    9:16 AM

    CLT

    1h 33m

    Nonstop

    10:49 AM

    DCA

    S M T W T F S

  17. DL652

    Seattle-Tacoma International Airport

    11:35 PM

    SEA

    4h 50m

    Nonstop

    7:25 AM

    ATL

    S M T W T F S
    Search

  18. DL1961

    Hartsfield–Jackson Atlanta International Airport

    11:10 AM

    ATL

    1h 48m

    Nonstop

    12:58 PM

    DCA

    S M T W T F S
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About Seattle-Tacoma International Airport and Ronald Reagan Washington National Airport

Learn about Seattle-Tacoma International Airport (SEA) and Ronald Reagan Washington National Airport (DCA) — including location, terminals, transportation, and travel tips.

Flight distance 3,741.3 km
Cheapest one-way ticket price MYR 462
Cheapest return ticket price MYR 716

FAQs for Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport Flights

  • How long is the flight from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport?

    Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport takes about 4 hours 30 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 2 daily flights from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA).
  • The earliest flight from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport departs at 07:20, and the last departs at 13:46, with about 3 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA) is quite popular. Without considering departure times or holidays, tickets cost around MYR 2,039 in October, the most expensive month to book this route.
  • Delta Air Lines is a very popular airline operating an average of 692 flights per month.
  • One-way flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport currently start from MYR 462, and round-trip fares start from MYR 716. The current lowest fare is a Frontier Airlines flight departing on Sat, Oct 24; prices may vary depending on availability.
  • Yes. Alaska Airlines and Delta Air Lines operate direct flights from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport, with an average flight time of 4 hours 28 minutes, and around 21 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport is MYR 1,214. Prices may vary depending on the departure date, airline, and availability.
  • Seattle-Tacoma International Airport to Ronald Reagan Washington National Airport operates around 21 weekly flights, mainly by Alaska Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle-Tacoma International Airport and Ronald Reagan Washington National Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before payment. Charges for checked baggage, onboard meals, Wi-Fi, and other optional services may also appear in the flight cards where applicable.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and for many routes the data may refresh in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.