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St. Louis Lambert International Airport to Ronald Reagan Washington National Airport flight
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St. Louis Lambert International Airport to Ronald Reagan Washington National Airport Flights Info

Cheapest one-way
€81
Frontier Airlines Frontier Airlines 16h 31m · 1 stop Mon, Nov 16
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Cheapest round-trip
€182
Frontier Airlines Frontier Airlines 9h 10m · 2 stops Thu, Nov 19 - Mon, Nov 23
Select flight
Recommended airlines
Frontier Airlines Frontier AirlinesCheapest· From €81 American Airlines American AirlinesMost booked

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport over the next 90 days, with one-way fares from €81 and round-trip from €182. Based on Trip.com's latest 7-day flight data.

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    • STL 11:40 AM
      9h 10m
      1 stop
      DCA 9:50 PM
      St. Louis - Washington D.C. | Thu, Nov 19 | Frontier Airlines
      IAD 6:50 AM
      11h 50m
      1 stop
      STL 5:40 PM
      Washington D.C. - St. Louis | Mon, Nov 23 | Frontier Airlines
      €182 €233
      22% off
      22% off
      €233 €182
    • STL 7:58 PM
      15h 50m
      1 stop
      DCA 12:48 PM
      St. Louis - Washington D.C. | Wed, Dec 2 | Frontier Airlines
      DCA 1:33 PM
      22h 24m
      1 stop
      STL 10:57 AM
      Washington D.C. - St. Louis | Fri, Dec 4 | Frontier Airlines
      €187 €233
      20% off
      20% off
      €233 €187
    • STL 6:20 PM
      17h 15m
      1 stop
      DCA 12:35 PM
      St. Louis - Washington D.C. | Wed, Jan 6 | Frontier Airlines
      DCA 7:25 AM
      27h 55m
      1 stop
      STL 10:20 AM
      Washington D.C. - St. Louis | Fri, Jan 8 | Frontier Airlines
      €188 €233
      19% off
      19% off
      €233 €188
    • STL 7:54 PM
      20h 1m
      1 stop
      DCA 4:55 PM
      St. Louis - Washington D.C. | Mon, Dec 7 | Frontier Airlines
      DCA 7:00 AM
      29h 4m
      1 stop
      STL 11:04 AM
      Washington D.C. - St. Louis | Tue, Dec 15 | Frontier Airlines
      €188
      19% off
      €233 €188
    • STL 7:54 PM
      20h 1m
      1 stop
      DCA 4:55 PM
      St. Louis - Washington D.C. | Mon, Dec 14 | Frontier Airlines
      IAD 5:30 AM
      6h 23m
      1 stop
      STL 10:53 AM
      Washington D.C. - St. Louis | Mon, Dec 21 | Frontier Airlines
      €190
      18% off
      €233 €190
    • STL 3:04 PM
      20h 55m
      1 stop
      DCA 12:59 PM
      St. Louis - Washington D.C. | Mon, Nov 23 | Frontier Airlines
      IAD 9:35 PM
      27h 24m
      1 stop
      STL 11:59 PM
      Washington D.C. - St. Louis | Wed, Nov 25 | Frontier Airlines
      €193
      17% off
      €233 €193
    • STL 4:18 PM
      18h 51m
      1 stop
      DCA 12:09 PM
      St. Louis - Washington D.C. | Wed, Nov 18 | Frontier Airlines
      IAD 9:35 PM
      27h 24m
      1 stop
      STL 11:59 PM
      Washington D.C. - St. Louis | Wed, Nov 25 | Frontier Airlines
      €197
      15% off
      €233 €197
    • STL 3:04 PM
      20h 55m
      1 stop
      DCA 12:59 PM
      St. Louis - Washington D.C. | Sat, Nov 21 | Frontier Airlines
      DCA 1:54 PM
      22h 9m
      1 stop
      STL 11:03 AM
      Washington D.C. - St. Louis | Thu, Nov 26 | Frontier Airlines
      €197
      15% off
      €233 €197
    • STL 7:54 PM
      16h 1m
      1 stop
      DCA 12:55 PM
      St. Louis - Washington D.C. | Wed, Dec 9 | Frontier Airlines
      IAD 8:26 PM
      28h 46m
      1 stop
      STL 12:12 AM
      Washington D.C. - St. Louis | Mon, Dec 14 | Frontier Airlines
      €202
      13% off
      €233 €202
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
      WAS 3:00 PM
      6h
      Nonstop
      STL 4:00 PM
      Washington D.C. - St. Louis | Wed, Nov 18 | Normal Airline
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    • Cheapest
      STL 6:34 PM
      16h 31m
      1 stop
      DCA 12:05 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Frontier Airlines
      €81 €198
      59% off
      59% off
      €198 €81
    • STL 6:34 PM
      16h 31m
      1 stop
      DCA 12:05 PM
      St. Louis - Washington D.C. | Wed, Nov 18 | Frontier Airlines
      €85 €198
      56% off
      56% off
      €198 €85
    • STL 7:54 PM
      15h 31m
      1 stop
      DCA 12:25 PM
      St. Louis - Washington D.C. | Wed, Dec 16 | Frontier Airlines
      €96 €198
      52% off
      52% off
      €198 €96
    • STL 6:20 PM
      17h 15m
      1 stop
      DCA 12:35 PM
      St. Louis - Washington D.C. | Wed, Jan 6 | Frontier Airlines
      €100
      49% off
      €198 €100
    • STL 7:54 PM
      16h 1m
      1 stop
      DCA 12:55 PM
      St. Louis - Washington D.C. | Sat, Dec 12 | Frontier Airlines
      €100
      49% off
      €198 €100
    • STL 7:54 PM
      16h 1m
      1 stop
      DCA 12:55 PM
      St. Louis - Washington D.C. | Sat, Dec 5 | Frontier Airlines
      €101
      49% off
      €198 €101
    • STL 7:54 PM
      16h 1m
      1 stop
      DCA 12:55 PM
      St. Louis - Washington D.C. | Wed, Dec 9 | Frontier Airlines
      €101
      49% off
      €198 €101
    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Fri, Jan 29 | American Airlines
      €107
      65% off
      €303 €107
    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Wed, Jan 13 | American Airlines
      €107
      65% off
      €303 €107
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
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    • Cheapest nonstop
      STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Fri, Jan 29 | American Airlines
      €107 €303
      65% off
      65% off
      €303 €107
    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Wed, Jan 13 | American Airlines
      €107 €303
      65% off
      65% off
      €303 €107
    • STL 7:03 AM
      2h 10m
      Nonstop
      DCA 10:13 AM
      St. Louis - Washington D.C. | Wed, Dec 23 | American Airlines
      €122 €303
      60% off
      60% off
      €303 €122
    • SEA 3:14 PM
      2h 43m
      Nonstop
      SNA 5:57 PM
      Seattle - Santa Ana | Tue, Dec 15 | Alaska Airlines
      €125
      63% off
      €341 €125
    • SEA 3:01 PM
      2h 41m
      Nonstop
      SNA 5:42 PM
      Seattle - Santa Ana | Thu, Nov 26 | Alaska Airlines
      €156
      54% off
      €341 €156
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Tue, Dec 15 | American Airlines
      €169
      50% off
      €341 €169
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Wed, Dec 16 | American Airlines
      €169
      50% off
      €341 €169
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Thu, Dec 3 | Alaska Airlines
      €174
      49% off
      €341 €174
    • SEA 7:45 PM
      2h 43m
      Nonstop
      SNA 10:28 PM
      Seattle - Santa Ana | Sun, Dec 6 | American Airlines
      €193
      43% off
      €341 €193
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
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    • Cheapest nonstop
      STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Fri, Jan 29 | American Airlines
      €107 €578
      81% off
      81% off
      €578 €107
    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Wed, Jan 13 | American Airlines
      €107 €578
      81% off
      81% off
      €578 €107
    • STL 7:03 AM
      2h 10m
      Nonstop
      DCA 10:13 AM
      St. Louis - Washington D.C. | Wed, Dec 23 | American Airlines
      €122 €578
      79% off
      79% off
      €578 €122
    • STL 10:06 AM
      3h 53m
      1 stop
      DCA 2:59 PM
      St. Louis - Washington D.C. | Tue, Dec 8 | Delta Air Lines
      €124
      79% off
      €578 €124
    • STL 12:54 PM
      4h 31m
      1 stop
      DCA 6:25 PM
      St. Louis - Washington D.C. | Tue, Dec 1 | American Airlines
      €134
      77% off
      €578 €134
    • STL 2:31 PM
      4h 9m
      1 stop
      DCA 7:40 PM
      St. Louis - Washington D.C. | Tue, Nov 17 | Delta Air Lines
      €255
      56% off
      €578 €255
    • STL 2:31 PM
      4h 9m
      1 stop
      DCA 7:40 PM
      St. Louis - Washington D.C. | Wed, Nov 18 | Delta Air Lines
      €255
      56% off
      €578 €255
    • STL 10:06 AM
      3h 53m
      1 stop
      DCA 2:59 PM
      St. Louis - Washington D.C. | Thu, Dec 3 | Delta Air Lines
      €268
      54% off
      €578 €268
    • STL 7:13 AM
      4h 46m
      1 stop
      DCA 12:59 PM
      St. Louis - Washington D.C. | Sun, Nov 22 | Delta Air Lines
      €270
      53% off
      €578 €270
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
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    • STL 2:31 PM
      4h 9m
      1 stop
      DCA 7:40 PM
      St. Louis - Washington D.C. | Tue, Nov 17 | Delta Air Lines
      €255 €312
      18% off
      18% off
      €312 €255
    • STL 3:51 PM
      2h 3m
      Nonstop
      DCA 6:54 PM
      St. Louis - Washington D.C. | Tue, Nov 17 | American Airlines
      €246 €312
      21% off
      21% off
      €312 €246
    • STL 10:25 AM
      2h 4m
      Nonstop
      DCA 1:29 PM
      St. Louis - Washington D.C. | Wed, Nov 18 | American Airlines
      €246 €312
      21% off
      21% off
      €312 €246
    • STL 2:31 PM
      4h 9m
      1 stop
      DCA 7:40 PM
      St. Louis - Washington D.C. | Wed, Nov 18 | Delta Air Lines
      €255
      18% off
      €312 €255
    • STL 2:31 PM
      4h 9m
      1 stop
      DCA 7:40 PM
      St. Louis - Washington D.C. | Thu, Nov 19 | Delta Air Lines
      €271
      13% off
      €312 €271
    • STL 10:33 AM
      2h 11m
      Nonstop
      DCA 1:44 PM
      St. Louis - Washington D.C. | Sat, Nov 21 | American Airlines
      €244
      22% off
      €312 €244
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
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    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Fri, Jan 29 | American Airlines
      €107 €303
      65% off
      65% off
      €303 €107
    • STL 3:47 PM
      2h 4m
      Nonstop
      DCA 6:51 PM
      St. Louis - Washington D.C. | Wed, Jan 13 | American Airlines
      €107 €303
      65% off
      65% off
      €303 €107
    • STL 7:03 AM
      2h 10m
      Nonstop
      DCA 10:13 AM
      St. Louis - Washington D.C. | Wed, Dec 23 | American Airlines
      €122 €303
      60% off
      60% off
      €303 €122
    • SEA 3:01 PM
      2h 41m
      Nonstop
      SNA 5:42 PM
      Seattle - Santa Ana | Thu, Nov 26 | Alaska Airlines
      €156
      54% off
      €341 €156
    • SEA 3:01 PM
      2h 41m
      Nonstop
      SNA 5:42 PM
      Seattle - Santa Ana | Sun, Nov 22 | Alaska Airlines
      €196
      43% off
      €341 €196
    • SEA 3:14 PM
      2h 43m
      Nonstop
      SNA 5:57 PM
      Seattle - Santa Ana | Tue, Dec 15 | Alaska Airlines
      €125
      63% off
      €341 €125
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Tue, Dec 15 | American Airlines
      €169
      50% off
      €341 €169
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Wed, Dec 16 | American Airlines
      €169
      50% off
      €341 €169
    • SEA 6:45 PM
      2h 43m
      Nonstop
      SNA 9:28 PM
      Seattle - Santa Ana | Thu, Dec 3 | Alaska Airlines
      €174
      49% off
      €341 €174
    • STL 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      St. Louis - Washington D.C. | Mon, Nov 16 | Normal Airline
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Displayed flight fares from St. Louis to Washington D.C. are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport is Frontier Airlines (from €81) among 2 carriers operating this route. Based on Trip.com's latest 7-day flight data.
Frontier Airlines logo Frontier Airlines American Airlines logo American Airlines Delta Air Lines logo Delta Air Lines United Airlines logo United Airlines Alaska Airlines logo Alaska Airlines
American Airlines logo American Airlines Delta Air Lines logo Delta Air Lines

What is the flight schedule from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport?

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA4769

    St. Louis Lambert International Airport

    3:51 PM

    STL

    2h 3m

    6:54 PM

    DCA

    S M T W T - -
    Search

  2. AA4458

    St. Louis Lambert International Airport

    10:25 AM

    STL

    2h 4m

    1:29 PM

    DCA

    S M T W T F S
    Search

  3. AA4703

    St. Louis Lambert International Airport

    6:00 AM

    STL

    2h 8m

    9:08 AM

    DCA

    S M T - - - S
    Search

  4. AA4408

    St. Louis Lambert International Airport

    6:59 AM

    STL

    2h 11m

    10:10 AM

    DCA

    - - - W T F -
    Search

  5. DL2822

    St. Louis Lambert International Airport

    6:00 PM

    STL

    1h 36m

    Nonstop

    8:36 PM

    DTW

    S M T W T F S
    Search

  6. DL2073

    Detroit Metropolitan Wayne County Airport

    9:20 PM

    DTW

    1h 33m

    Nonstop

    10:53 PM

    DCA

    S M T W T F S

  7. DL1102

    St. Louis Lambert International Airport

    2:31 PM

    STL

    1h 34m

    Nonstop

    5:05 PM

    ATL

    S M T W T F S
    Search

  8. DL703

    Hartsfield–Jackson Atlanta International Airport

    6:30 PM

    ATL

    1h 43m

    Nonstop

    8:13 PM

    DCA

    S M T W T F S

  9. DL2868

    St. Louis Lambert International Airport

    10:20 AM

    STL

    1h 32m

    Nonstop

    12:52 PM

    DTW

    S M T W T F S
    Search

  10. DL1454

    Detroit Metropolitan Wayne County Airport

    3:50 PM

    DTW

    1h 33m

    Nonstop

    5:23 PM

    DCA

    S M T W T F S
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FAQs for St. Louis Lambert International Airport to Ronald Reagan Washington National Airport Flights

  • How long is the flight from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport?

    St. Louis Lambert International Airport to Ronald Reagan Washington National Airport takes about 1 hour 38 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 3 daily flights from St. Louis Lambert International Airport (STL) to Ronald Reagan Washington National Airport (DCA).
  • The earliest flight from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport departs at 07:00, and the last departs at 19:55, with about 10 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from St. Louis Lambert International Airport (STL) to Ronald Reagan Washington National Airport (DCA) is quite popular. Without considering departure times or holidays, tickets cost around €200 in December, the most expensive month to book this route.
  • The earliest flight departs from St. Louis Lambert International Airport (STL) at 06:00 and arrives in Ronald Reagan Washington National Airport (DCA) at 09:10.
  • The latest flight departs from St. Louis Lambert International Airport (STL) at 18:08 and arrives in Ronald Reagan Washington National Airport (DCA) at 21:10.
  • American Airlines is a very popular airline operating an average of 1142 flights per month.
  • One-way flights from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport currently start from €81, and round-trip fares start from €182. The current lowest fare is a Frontier Airlines flight departing on Mon, Nov 16; prices may vary depending on availability.
  • Yes. American Airlines operate direct flights from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport, with an average flight time of 1 hour 37 minutes, and around 46 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 St. Louis Lambert International Airport to Ronald Reagan Washington National Airport is €188. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Ronald Reagan Washington National Airport operates around 46 weekly flights, mainly by American Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter St. Louis Lambert 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 estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.