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St. Louis Lambert International Airport to Dulles International Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Dulles International Airport over the next 90 days, with one-way fares from AED 184 and round-trip from AED 448. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      STL 08:00
      2h 10m
      Nonstop
      IAD 11:10
      St. Louis - Washington D.C. | Fri, Oct 30 | United Airlines
      DCA 18:55
      2h 30m
      Nonstop
      STL 20:25
      Washington D.C. - St. Louis | Wed, Nov 4 |
      AED 1,044 AED 1,323
      21% off
      21% off
      AED 1,323 AED 1,044
    • STL 13:00
      2h 9m
      Nonstop
      IAD 16:09
      St. Louis - Washington D.C. | Sat, Nov 7 | United Airlines
      DCA 13:44
      2h 37m
      Nonstop
      STL 15:21
      Washington D.C. - St. Louis | Thu, Nov 12 | American Airlines
      AED 1,071 AED 1,323
      19% off
      19% off
      AED 1,323 AED 1,071
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Wed, Oct 21 | Frontier Airlines
      IAD 07:50
      10h 50m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Fri, Oct 23 | Frontier Airlines
      AED 448 AED 1,323
      66% off
      66% off
      AED 1,323 AED 448
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Fri, Oct 23 | Frontier Airlines
      IAD 07:54
      7h 26m
      1 stop
      STL 14:20
      Washington D.C. - St. Louis | Sat, Oct 24 | Frontier Airlines
      AED 597
      55% off
      AED 1,323 AED 597
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Wed, Nov 11 | Frontier Airlines
      IAD 08:05
      10h 35m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Fri, Nov 13 | Frontier Airlines
      AED 619
      53% off
      AED 1,323 AED 619
    • STL 13:20
      6h 20m
      1 stop
      IAD 20:40
      St. Louis - Washington D.C. | Wed, Nov 25 | Frontier Airlines
      IAD 06:50
      11h 50m
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Sun, Nov 29 | Frontier Airlines
      AED 664
      50% off
      AED 1,323 AED 664
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Sun, Oct 25 | Frontier Airlines
      IAD 07:40
      11h
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Sun, Nov 1 | Frontier Airlines
      AED 680
      49% off
      AED 1,323 AED 680
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Sat, Oct 31 | Frontier Airlines
      IAD 07:40
      11h
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Wed, Nov 4 | Frontier Airlines
      AED 684
      48% off
      AED 1,323 AED 684
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Mon, Nov 2 | Frontier Airlines
      IAD 07:40
      11h
      1 stop
      STL 17:40
      Washington D.C. - St. Louis | Wed, Nov 4 | Frontier Airlines
      AED 705
      47% off
      AED 1,323 AED 705
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | Normal Airline
      WAS 15:00
      6h
      Nonstop
      STL 16:00
      Washington D.C. - St. Louis | Tue, Oct 20 | Normal Airline
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    • Cheapest
      STL 18:34
      21h 38m
      1 stop
      IAD 17:12
      St. Louis - Washington D.C. | Wed, Nov 18 | Frontier Airlines
      AED 184 AED 891
      79% off
      79% off
      AED 891 AED 184
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Fri, Oct 23 | Frontier Airlines
      AED 206 AED 891
      77% off
      77% off
      AED 891 AED 206
    • STL 18:34
      21h 38m
      1 stop
      IAD 17:12
      St. Louis - Washington D.C. | Fri, Nov 20 | Frontier Airlines
      AED 208 AED 891
      77% off
      77% off
      AED 891 AED 208
    • STL 18:34
      21h 38m
      1 stop
      IAD 17:12
      St. Louis - Washington D.C. | Sun, Nov 15 | Frontier Airlines
      AED 217
      76% off
      AED 891 AED 217
    • STL 12:02
      4h 45m
      1 stop
      IAD 17:47
      St. Louis - Washington D.C. | Mon, Dec 7 | Frontier Airlines
      AED 318
      79% off
      AED 1,510 AED 318
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Sat, Nov 7 | Frontier Airlines
      AED 372
      57% off
      AED 891 AED 372
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Sat, Nov 14 | Frontier Airlines
      AED 378
      57% off
      AED 891 AED 378
    • STL 16:26
      16h 55m
      1 stop
      IAD 10:21
      St. Louis - Washington D.C. | Sat, Oct 31 | Frontier Airlines
      AED 378
      57% off
      AED 891 AED 378
    • STL 18:13
      26h 16m
      1 stop
      IAD 21:29
      St. Louis - Washington D.C. | Sat, Dec 5 | Frontier Airlines
      AED 385
      56% off
      AED 891 AED 385
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Wed, Oct 21 | United Airlines
      AED 1,168 AED 1,510
      23% off
      23% off
      AED 1,510 AED 1,168
    • STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Mon, Oct 19 | United Airlines
      AED 1,223 AED 1,510
      19% off
      19% off
      AED 1,510 AED 1,223
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Wed, Oct 21 | United Airlines
      AED 1,168 AED 1,510
      23% off
      23% off
      AED 1,510 AED 1,168
    • STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Mon, Oct 19 | United Airlines
      AED 1,223 AED 1,510
      19% off
      19% off
      AED 1,510 AED 1,223
    • STL 12:02
      4h 45m
      1 stop
      IAD 17:47
      St. Louis - Washington D.C. | Mon, Dec 7 | Frontier Airlines
      AED 318 AED 1,510
      79% off
      79% off
      AED 1,510 AED 318
    • STL 09:27
      4h 29m
      1 stop
      IAD 14:56
      St. Louis - Washington D.C. | Sat, Oct 31 | American Airlines
      AED 504
      67% off
      AED 1,510 AED 504
    • STL 12:00
      4h 10m
      1 stop
      IAD 17:10
      St. Louis - Washington D.C. | Sat, Oct 31 | Delta Air Lines
      AED 504
      67% off
      AED 1,510 AED 504
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Mon, Oct 19 | Frontier Airlines
      AED 721
      52% off
      AED 1,510 AED 721
    • STL 12:00
      4h 10m
      1 stop
      IAD 17:10
      St. Louis - Washington D.C. | Sat, Oct 17 | Delta Air Lines
      AED 1,006
      33% off
      AED 1,510 AED 1,006
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Wed, Oct 21 | United Airlines
      AED 1,168 AED 1,510
      23% off
      23% off
      AED 1,510 AED 1,168
    • STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Mon, Oct 19 | United Airlines
      AED 1,223 AED 1,510
      19% off
      19% off
      AED 1,510 AED 1,223
    • STL 18:35
      4h 46m
      1 stop
      IAD 00:21
      St. Louis - Washington D.C. | Mon, Oct 19 | Frontier Airlines
      AED 721 AED 1,510
      52% off
      52% off
      AED 1,510 AED 721
    • STL 12:00
      4h 10m
      1 stop
      IAD 17:10
      St. Louis - Washington D.C. | Sat, Oct 17 | Delta Air Lines
      AED 1,006
      33% off
      AED 1,510 AED 1,006
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | Normal Airline
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    • STL 13:00
      2h 9m
      Nonstop
      IAD 16:09
      St. Louis - Washington D.C. | Sat, Oct 31 | United Airlines
      AED 613 AED 1,442
      56% off
      56% off
      AED 1,442 AED 613
    • STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Tue, Oct 20 | United Airlines
      AED 651 AED 1,442
      55% off
      55% off
      AED 1,442 AED 651
    • STL 13:09
      2h 16m
      Nonstop
      IAD 16:25
      St. Louis - Washington D.C. | Wed, Oct 21 | United Airlines
      AED 1,168 AED 1,442
      19% off
      19% off
      AED 1,442 AED 1,168
    • STL 13:00
      17h 25m
      1 stop
      WAS 14:00
      St. Louis - Washington D.C. | Sun, Oct 18 | 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 Dulles International Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Dulles International Airport is Frontier Airlines (from AED 184) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From AED 184
American Airlines
From AED 472
Delta Air Lines
From AED 479
United Airlines
From AED 513

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What is the flight schedule from St. Louis Lambert International Airport to Dulles International 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. UA4506

    St. Louis Lambert International Airport

    08:25

    STL

    2h 6m

    11:31

    IAD

    S M T W T - S
    Search

  2. AA712

    St. Louis Lambert International Airport

    07:30

    STL

    1h 57m

    Nonstop

    10:27

    CLT

    S M T W T F S
    Search

  3. AA5154

    Charlotte Douglas International Airport

    11:20

    CLT

    1h 34m

    Nonstop

    12:54

    IAD

    S M T W T F S

  4. DL1524

    St. Louis Lambert International Airport

    06:00

    STL

    1h 40m

    Nonstop

    08:40

    ATL

    S M T W T F S
    Search

  5. DL1444

    Hartsfield–Jackson Atlanta International Airport

    09:45

    ATL

    1h 47m

    Nonstop

    11:32

    IAD

    S M T W T - S

  6. DL2868

    St. Louis Lambert International Airport

    10:35

    STL

    1h 34m

    Nonstop

    13:09

    DTW

    S M T W T F S
    Search

  7. DL5037

    Detroit Metropolitan Wayne County Airport

    14:40

    DTW

    1h 36m

    Nonstop

    16:16

    IAD

    - - - - - F -

  8. F94474

    St. Louis Lambert International Airport

    12:05

    STL

    1h 40m

    Nonstop

    14:45

    ATL

    S - T - T - -
    Search

  9. F93692

    Hartsfield–Jackson Atlanta International Airport

    22:30

    ATL

    1h 51m

    Nonstop

    00:21

    IAD

    S M T W T F S

  10. DL2868

    St. Louis Lambert International Airport

    10:35

    STL

    1h 34m

    Nonstop

    13:09

    DTW

    S M T W T F S
    Search

  11. DL1787

    Detroit Metropolitan Wayne County Airport

    14:57

    DTW

    1h 31m

    Nonstop

    16:28

    IAD

    S M T W T - S

  12. DL1400

    St. Louis Lambert International Airport

    12:00

    STL

    1h 35m

    Nonstop

    14:35

    ATL

    S M T W T F S
    Search

  13. DL2902

    Hartsfield–Jackson Atlanta International Airport

    16:45

    ATL

    1h 41m

    Nonstop

    18:26

    IAD

    S - - W T - S

  14. DL1571

    St. Louis Lambert International Airport

    10:47

    STL

    1h 36m

    Nonstop

    13:23

    ATL

    S M T W T F S
    Search

  15. DL1554

    Hartsfield–Jackson Atlanta International Airport

    15:27

    ATL

    1h 43m

    Nonstop

    17:10

    IAD

    - M T - - F -

  16. DL1371

    St. Louis Lambert International Airport

    14:38

    STL

    1h 32m

    Nonstop

    17:10

    DTW

    S M T W T F S
    Search

  17. DL3088

    Detroit Metropolitan Wayne County Airport

    21:46

    DTW

    1h 30m

    Nonstop

    23:16

    IAD

    S M T W T F S

  18. DL543

    St. Louis Lambert International Airport

    18:08

    STL

    1h 42m

    Nonstop

    20:50

    ATL

    S M T W T F S
    Search

  19. DL2549

    Hartsfield–Jackson Atlanta International Airport

    22:40

    ATL

    1h 40m

    Nonstop

    00:20

    IAD

    S M T W T F S
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About St. Louis Lambert International Airport and Dulles International Airport

Learn about St. Louis Lambert International Airport (STL) and Dulles International Airport (IAD) — including location, terminals, transportation, and travel tips.

Flight distance 1,119.28 km
Cheapest one-way ticket price AED 184
Cheapest return ticket price AED 448

FAQs for St. Louis Lambert International Airport to Dulles International Airport Flights

  • How long is the flight from St. Louis Lambert International Airport to Dulles International Airport?

    St. Louis Lambert International Airport to Dulles International Airport takes about 1 hour 41 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 2 daily flights from St. Louis Lambert International Airport (STL) to Dulles International Airport (IAD).
  • The earliest flight from St. Louis Lambert International Airport to Dulles International Airport departs at 08:30, and the last departs at 14:40, with about 2 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 Dulles International Airport (IAD) is quite popular. Without considering departure times or holidays, tickets cost around AED 1,299 in October, the most expensive month to book this route.
  • United Airlines is a very popular airline operating an average of 626 flights per month.
  • One-way flights from St. Louis Lambert International Airport to Dulles International Airport currently start from AED 184, and round-trip fares start from AED 448. The current lowest fare is a Frontier Airlines flight departing on Wed, Nov 18; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from St. Louis Lambert International Airport to Dulles International Airport, with an average flight time of 1 hour 37 minutes, and around 13 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 Dulles International Airport is AED 771. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Dulles International Airport operates around 13 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter St. Louis Lambert International Airport and Dulles International 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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