Trip.com
>
Flights
>
United States
>
District of Columbia
>
Flights to Washington D.C.
>
St. Louis to Washington D.C. flight
>
St. Louis Lambert International Airport to Ronald Reagan Washington National Airport flight

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 TRY 2,127 and round-trip from TRY 8,418. Based on Trip.com's latest 7-day flight data.

    • Cheapest
      SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Dec 3 | easyJet
      TRY 2,127 TRY 52,109
      96% off
      96% off
      TRY 52,109 TRY 2,127
    • SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Nov 26 | easyJet
      TRY 2,754 TRY 52,109
      95% off
      95% off
      TRY 52,109 TRY 2,754
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Nov 23 | easyJet
      TRY 3,993 TRY 52,109
      92% off
      92% off
      TRY 52,109 TRY 3,993
    • STL 18:34
      16h 31m
      1 stop
      DCA 12:05
      St. Louis - Washington D.C. | Mon, Nov 16 | Frontier Airlines
      TRY 4,426
      42% off
      TRY 7,625 TRY 4,426
    • STL 18:34
      16h 31m
      1 stop
      DCA 12:05
      St. Louis - Washington D.C. | Wed, Nov 18 | Frontier Airlines
      TRY 4,650
      39% off
      TRY 7,625 TRY 4,650
    • STL 16:18
      18h 51m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Wed, Nov 11 | Frontier Airlines
      TRY 4,657
      39% off
      TRY 7,625 TRY 4,657
    • STL 16:18
      23h 29m
      1 stop
      DCA 16:47
      St. Louis - Washington D.C. | Wed, Nov 4 | Frontier Airlines
      TRY 5,165
      32% off
      TRY 7,625 TRY 5,165
    • STL 19:59
      15h 10m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Sat, Nov 14 | Frontier Airlines
      TRY 5,209
      32% off
      TRY 7,625 TRY 5,209
    • STL 19:59
      19h 48m
      1 stop
      DCA 16:47
      St. Louis - Washington D.C. | Mon, Nov 9 | Frontier Airlines
      TRY 5,262
      31% off
      TRY 7,625 TRY 5,262
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights
    • STL 19:59
      15h 10m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Sat, Nov 14 | Frontier Airlines
      IAD 08:05
      10h 35m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Wed, Nov 18 | Frontier Airlines
      TRY 8,418 TRY 15,744
      47% off
      47% off
      TRY 15,744 TRY 8,418
    • STL 16:18
      28h 32m
      1 stop
      DCA 21:50
      St. Louis - Washington D.C. | Wed, Nov 4 | Frontier Airlines
      IAD 08:05
      10h 35m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Wed, Nov 11 | Frontier Airlines
      TRY 8,433 TRY 15,744
      46% off
      46% off
      TRY 15,744 TRY 8,433
    • STL 19:59
      19h 48m
      1 stop
      DCA 16:47
      St. Louis - Washington D.C. | Mon, Nov 9 | Frontier Airlines
      IAD 07:48
      10h 54m
      1 stop
      STL 17:42
      Washington D.C. - St. Louis | Wed, Nov 11 | Frontier Airlines
      TRY 9,209 TRY 15,744
      42% off
      42% off
      TRY 15,744 TRY 9,209
    • STL 15:04
      20h 55m
      1 stop
      DCA 12:59
      St. Louis - Washington D.C. | Mon, Nov 23 | Frontier Airlines
      IAD 06:50
      11h 50m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Fri, Nov 27 | Frontier Airlines
      TRY 9,299
      41% off
      TRY 15,744 TRY 9,299
    • STL 19:59
      15h 10m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Sat, Oct 31 | Frontier Airlines
      IAD 07:40
      11h
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Mon, Nov 2 | Frontier Airlines
      TRY 9,568
      39% off
      TRY 15,744 TRY 9,568
    • STL 11:40
      9h 10m
      1 stop
      DCA 21:50
      St. Louis - Washington D.C. | Thu, Nov 19 | Frontier Airlines
      IAD 06:50
      11h 50m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Mon, Nov 23 | Frontier Airlines
      TRY 9,948
      37% off
      TRY 15,744 TRY 9,948
    • STL 19:59
      15h 10m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Fri, Nov 13 | Frontier Airlines
      IAD 07:48
      10h 54m
      1 stop
      STL 17:42
      Washington D.C. - St. Louis | Wed, Nov 18 | Frontier Airlines
      TRY 10,023
      36% off
      TRY 15,744 TRY 10,023
    • STL 19:59
      15h 10m
      1 stop
      DCA 12:09
      St. Louis - Washington D.C. | Sat, Nov 7 | Frontier Airlines
      IAD 07:48
      10h 54m
      1 stop
      STL 17:42
      Washington D.C. - St. Louis | Wed, Nov 11 | Frontier Airlines
      TRY 10,321
      34% off
      TRY 15,744 TRY 10,321
    • STL 19:58
      15h 50m
      1 stop
      DCA 12:48
      St. Louis - Washington D.C. | Wed, Dec 2 | Frontier Airlines
      IAD 22:24
      26h 48m
      1 stop
      STL 00:12
      Washington D.C. - St. Louis | Thu, Dec 3 | Frontier Airlines
      TRY 10,329
      34% off
      TRY 15,744 TRY 10,329
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      WAS 15:00
      6h
      Direct
      STL 16:00
      Washington D.C. - St. Louis | Wed, Oct 28 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Dec 3 | easyJet
      TRY 2,127 TRY 52,109
      96% off
      96% off
      TRY 52,109 TRY 2,127
    • SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Nov 26 | easyJet
      TRY 2,754 TRY 52,109
      95% off
      95% off
      TRY 52,109 TRY 2,754
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Nov 23 | easyJet
      TRY 3,993 TRY 52,109
      92% off
      92% off
      TRY 52,109 TRY 3,993
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Dec 14 | easyJet
      TRY 5,978
      89% off
      TRY 52,109 TRY 5,978
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Thu, Nov 12 | easyJet
      TRY 6,038
      88% off
      TRY 52,109 TRY 6,038
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Nov 16 | easyJet
      TRY 6,157
      88% off
      TRY 52,109 TRY 6,157
    • SPX 14:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Oct 29 | easyJet
      TRY 8,754
      83% off
      TRY 52,109 TRY 8,754
    • SPX 14:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Oct 26 | easyJet
      TRY 10,359
      80% off
      TRY 52,109 TRY 10,359
    • STL 17:08
      2h 10m
      Direct
      DCA 20:18
      St. Louis - Washington D.C. | Sun, Oct 25 | American Airlines
      TRY 14,299
      26% off
      TRY 19,323 TRY 14,299
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      STL 17:08
      2h 10m
      Direct
      DCA 20:18
      St. Louis - Washington D.C. | Sun, Oct 25 | American Airlines
      TRY 14,299 TRY 19,323
      26% off
      26% off
      TRY 19,323 TRY 14,299
    • STL 07:13
      4h 46m
      1 stop
      DCA 12:59
      St. Louis - Washington D.C. | Sun, Nov 22 | Delta Air Lines
      TRY 7,732 TRY 19,323
      60% off
      60% off
      TRY 19,323 TRY 7,732
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      STL 17:08
      2h 10m
      Direct
      DCA 20:18
      St. Louis - Washington D.C. | Sun, Oct 25 | American Airlines
      TRY 14,299 TRY 19,323
      26% off
      26% off
      TRY 19,323 TRY 14,299
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights
    • STL 17:08
      2h 10m
      Direct
      DCA 20:18
      St. Louis - Washington D.C. | Sun, Oct 25 | American Airlines
      TRY 14,299 TRY 19,323
      26% off
      26% off
      TRY 19,323 TRY 14,299
    • SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Dec 3 | easyJet
      TRY 2,127 TRY 52,109
      96% off
      96% off
      TRY 52,109 TRY 2,127
    • SPX 13:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Nov 26 | easyJet
      TRY 2,754 TRY 52,109
      95% off
      95% off
      TRY 52,109 TRY 2,754
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Nov 23 | easyJet
      TRY 3,993
      92% off
      TRY 52,109 TRY 3,993
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Dec 14 | easyJet
      TRY 5,978
      89% off
      TRY 52,109 TRY 5,978
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Thu, Nov 12 | easyJet
      TRY 6,038
      88% off
      TRY 52,109 TRY 6,038
    • SPX 13:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Nov 16 | easyJet
      TRY 6,157
      88% off
      TRY 52,109 TRY 6,157
    • SPX 14:35
      4h 25m
      Direct
      GVA 17:00
      Giza Governorate - Geneva | Thu, Oct 29 | easyJet
      TRY 8,754
      83% off
      TRY 52,109 TRY 8,754
    • SPX 14:00
      4h 25m
      Direct
      GVA 16:25
      Giza Governorate - Geneva | Mon, Oct 26 | easyJet
      TRY 10,359
      80% off
      TRY 52,109 TRY 10,359
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights

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

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 TRY 4,657) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From TRY 4,657
American Airlines
From TRY 5,881
Delta Air Lines
From TRY 6,508
United Airlines
From TRY 7,105

Find more flights and airlines

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. AA4678

    St. Louis Lambert International Airport

    06:56

    STL

    2h 12m

    10:08

    DCA

    S M T W T F -
    Search

  2. DL1524

    St. Louis Lambert International Airport

    06:00

    STL

    1h 44m

    Direct

    08:44

    ATL

    S M T W T F S
    Search

  3. DL380

    Hartsfield–Jackson Atlanta International Airport

    09:45

    ATL

    1h 44m

    Direct

    11:29

    DCA

    S M T W T F S

  4. DL1400

    St. Louis Lambert International Airport

    12:00

    STL

    1h 35m

    Direct

    14:35

    ATL

    S M T W T F S
    Search

  5. DL950

    Hartsfield–Jackson Atlanta International Airport

    16:59

    ATL

    1h 44m

    Direct

    18:43

    DCA

    S M T W T - S

  6. DL1400

    St. Louis Lambert International Airport

    12:00

    STL

    1h 35m

    Direct

    14:35

    ATL

    S M T W T F S
    Search

  7. DL832

    Hartsfield–Jackson Atlanta International Airport

    17:30

    ATL

    1h 44m

    Direct

    19:14

    DCA

    S M T W T F S
Find more flights and airlines

About St. Louis Lambert International Airport and Ronald Reagan Washington National Airport

Learn about St. Louis Lambert International Airport (STL) and Ronald Reagan Washington National Airport (DCA) — including location, terminals, transportation, and travel tips.

Flight distance 1,154.87km
Cheapest one-way ticket price TRY 2,127
Cheapest return ticket price TRY 8,418

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 43 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 4 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 07:03, and the last departs at 19:55, with about 15 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 TRY 13,814 in November, the most expensive month to book this route.
  • 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 TRY 4,426, and round-trip fares start from TRY 8,418. 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 45 minutes, and around 52 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 TRY 10,539. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Ronald Reagan Washington National Airport operates around 53 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.

Popular Destinations & Recommendations

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 shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate 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.