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Dulles International Airport to St. Louis Lambert International Airport flight

Explore the cheapest one-way and round-trip flights from Dulles International Airport to St. Louis Lambert International Airport over the next 90 days, with one-way fares from BRL 230 and round-trip from BRL 1,054. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        IAD 08:40
        2h 32m
        Direct
        STL 10:12
        Washington D.C. - St. Louis | Wed, Nov 4 | United Airlines
        STL 07:00
        2h 8m
        Direct
        DCA 10:08
        St. Louis - Washington D.C. | Wed, Nov 11 | American Airlines
        BRL 1,760 BRL 2,910
        40% off
        40% off
        BRL 2,910 BRL 1,760
      • IAD 08:20
        2h 21m
        Direct
        STL 09:41
        Washington D.C. - St. Louis | Thu, Oct 8 | United Airlines
        STL 19:50
        2h
        Direct
        DCA 22:50
        St. Louis - Washington D.C. | Tue, Oct 13 |
        BRL 2,037 BRL 2,910
        30% off
        30% off
        BRL 2,910 BRL 2,037
      • IAD 06:00
        5h 51m
        1 stop
        STL 10:51
        Washington D.C. - St. Louis | Wed, Nov 4 | Delta Air Lines
        STL 10:35
        6h 1m
        1 stop
        IAD 17:36
        St. Louis - Washington D.C. | Wed, Nov 11 | Frontier Airlines
        BRL 1,054 BRL 2,910
        64% off
        64% off
        BRL 2,910 BRL 1,054
      • IAD 10:07
        4h 13m
        1 stop
        STL 13:20
        Washington D.C. - St. Louis | Thu, Oct 8 | Delta Air Lines
        STL 18:00
        4h 11m
        1 stop
        IAD 23:11
        St. Louis - Washington D.C. | Tue, Oct 13 | Delta Air Lines
        BRL 1,116
        62% off
        BRL 2,910 BRL 1,116
      • IAD 10:15
        6h 28m
        1 stop
        STL 15:43
        Washington D.C. - St. Louis | Wed, Nov 4 | United Airlines
        STL 10:35
        6h 1m
        1 stop
        IAD 17:36
        St. Louis - Washington D.C. | Wed, Nov 11 | Frontier Airlines
        BRL 1,240
        56% off
        BRL 2,910 BRL 1,240
      • IAD 06:00
        5h 51m
        1 stop
        STL 10:51
        Washington D.C. - St. Louis | Fri, Oct 23 | Delta Air Lines
        STL 16:30
        16h 47m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Mon, Oct 26 | Frontier Airlines
        BRL 1,308
        55% off
        BRL 2,910 BRL 1,308
      • IAD 08:20
        4h 53m
        1 stop
        STL 12:13
        Washington D.C. - St. Louis | Thu, Oct 8 | United Airlines
        STL 19:50
        2h
        Direct
        DCA 22:50
        St. Louis - Washington D.C. | Tue, Oct 13 |
        BRL 1,318
        55% off
        BRL 2,910 BRL 1,318
      • IAD 11:12
        6h 22m
        1 stop
        STL 16:34
        Washington D.C. - St. Louis | Mon, Oct 5 | Frontier Airlines
        STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Sat, Oct 10 | Frontier Airlines
        BRL 1,401
        52% off
        BRL 2,910 BRL 1,401
      • IAD 19:37
        5h 19m
        1 stop
        STL 23:56
        Washington D.C. - St. Louis | Fri, Nov 13 | Delta Air Lines
        STL 16:26
        16h 55m
        1 stop
        IAD 10:21
        St. Louis - Washington D.C. | Mon, Nov 16 | Frontier Airlines
        BRL 1,424
        51% off
        BRL 2,910 BRL 1,424
      • IAD 11:25
        6h 49m
        1 stop
        STL 17:14
        Washington D.C. - St. Louis | Thu, Nov 12 | Delta Air Lines
        STL 16:26
        16h 55m
        1 stop
        IAD 10:21
        St. Louis - Washington D.C. | Mon, Nov 16 | Frontier Airlines
        BRL 1,424
        51% off
        BRL 2,910 BRL 1,424
      • IAD 11:12
        13h 1m
        1 stop
        STL 23:13
        Washington D.C. - St. Louis | Fri, Oct 23 | Frontier Airlines
        STL 16:30
        16h 47m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Mon, Oct 26 | Frontier Airlines
        BRL 1,437
        51% off
        BRL 2,910 BRL 1,437
      • IAD 11:12
        13h 1m
        1 stop
        STL 23:13
        Washington D.C. - St. Louis | Sat, Oct 24 | Frontier Airlines
        STL 12:16
        17h 4m
        1 stop
        IAD 06:20
        St. Louis - Washington D.C. | Mon, Oct 26 | Frontier Airlines
        BRL 1,454
        50% off
        BRL 2,910 BRL 1,454
      • IAD 08:20
        4h 53m
        1 stop
        STL 12:13
        Washington D.C. - St. Louis | Fri, Oct 23 | United Airlines
        STL 16:30
        16h 47m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Mon, Oct 26 | Frontier Airlines
        BRL 1,498
        49% off
        BRL 2,910 BRL 1,498
      • IAD 12:29
        4h 59m
        1 stop
        STL 16:28
        Washington D.C. - St. Louis | Thu, Oct 15 | Delta Air Lines
        STL 20:10
        15h 40m
        1 stop
        DCA 12:50
        St. Louis - Washington D.C. | Mon, Oct 19 | Frontier Airlines
        BRL 1,511
        48% off
        BRL 2,910 BRL 1,511
      • WAS 13:00
        17h 25m
        1 stop
        STL 14:00
        Washington D.C. - St. Louis | Tue, Oct 6 | Normal Airline
        STL 15:00
        6h
        Direct
        WAS 16:00
        St. Louis - Washington D.C. | Thu, Oct 8 | Normal Airline
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      • Cheapest nonstop
        IAD 08:40
        2h 32m
        Direct
        STL 10:12
        Washington D.C. - St. Louis | Sun, Nov 15 | United Airlines
        BRL 840 BRL 1,272
        34% off
        34% off
        BRL 1,272 BRL 840
      • IAD 08:40
        2h 32m
        Direct
        STL 10:12
        Washington D.C. - St. Louis | Tue, Nov 24 | United Airlines
        BRL 890 BRL 1,272
        30% off
        30% off
        BRL 1,272 BRL 890
      • IAD 21:06
        21h 34m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Wed, Oct 21 | Frontier Airlines
        BRL 230 BRL 1,272
        82% off
        82% off
        BRL 1,272 BRL 230
      • IAD 21:06
        21h 34m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Wed, Oct 28 | Frontier Airlines
        BRL 230
        82% off
        BRL 1,272 BRL 230
      • IAD 07:50
        10h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Thu, Oct 22 | Frontier Airlines
        BRL 230
        82% off
        BRL 1,272 BRL 230
      • IAD 08:05
        10h 35m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Thu, Nov 19 | Frontier Airlines
        BRL 232
        82% off
        BRL 1,272 BRL 232
      • IAD 08:05
        10h 35m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Thu, Nov 12 | Frontier Airlines
        BRL 233
        82% off
        BRL 1,272 BRL 233
      • IAD 21:06
        21h 34m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Wed, Nov 18 | Frontier Airlines
        BRL 255
        80% off
        BRL 1,272 BRL 255
      • IAD 22:33
        13h 44m
        1 stop
        STL 11:17
        Washington D.C. - St. Louis | Wed, Dec 2 | Frontier Airlines
        BRL 255
        80% off
        BRL 1,272 BRL 255
      • IAD 07:50
        6h 20m
        1 stop
        STL 13:10
        Washington D.C. - St. Louis | Thu, Oct 8 | Frontier Airlines
        BRL 289
        77% off
        BRL 1,272 BRL 289
      • IAD 06:50
        11h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Tue, Nov 24 | Frontier Airlines
        BRL 312
        75% off
        BRL 1,272 BRL 312
      • IAD 21:04
        17h 6m
        1 stop
        STL 13:10
        Washington D.C. - St. Louis | Wed, Oct 7 | Frontier Airlines
        BRL 322
        75% off
        BRL 1,272 BRL 322
      • IAD 21:06
        21h 34m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Fri, Oct 23 | Frontier Airlines
        BRL 330
        74% off
        BRL 1,272 BRL 330
      • IAD 08:05
        10h 35m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Thu, Nov 5 | Frontier Airlines
        BRL 336
        74% off
        BRL 1,272 BRL 336
      • WAS 13:00
        17h 25m
        1 stop
        STL 14:00
        Washington D.C. - St. Louis | Tue, Oct 6 | Normal Airline
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Flight fares from Dulles International Airport to St. Louis Lambert International Airport are based on the average fares across airlines for the next three months, based on Trip.com’s latest data.

Which airline offers the cheapest flights from Dulles International Airport to St. Louis Lambert International Airport?

The cheapest airline flying from Dulles International Airport to St. Louis Lambert International Airport is Frontier Airlines (from BRL 230) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From BRL 230
Delta Air Lines
From BRL 484
American Airlines
From BRL 670
United Airlines
From BRL 819

Find more flights and airlines

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL1444

    Dulles International Airport

    12:26

    IAD

    1h 49m

    Direct

    14:15

    ATL

    S M T W T - S
    Search

  2. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -

  3. DL1354

    Dulles International Airport

    07:00

    IAD

    2h

    Direct

    09:00

    ATL

    - M T W T F -
    Search

  4. DL1102

    Hartsfield–Jackson Atlanta International Airport

    13:59

    ATL

    1h 44m

    Direct

    14:43

    STL

    - M T W T F -

  5. F94707

    Dulles International Airport

    07:50

    IAD

    2h 3m

    Direct

    09:53

    ATL

    S M T W T F S
    Search

  6. DL1102

    Hartsfield–Jackson Atlanta International Airport

    13:59

    ATL

    1h 44m

    Direct

    14:43

    STL

    - M T W T F -

  7. DL1324

    Dulles International Airport

    10:15

    IAD

    1h 48m

    Direct

    12:03

    ATL

    S M T W T F S
    Search

  8. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -

  9. F94707

    Dulles International Airport

    07:50

    IAD

    2h 3m

    Direct

    09:53

    ATL

    S M T W T F S
    Search

  10. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -

  11. F94355

    Dulles International Airport

    11:12

    IAD

    2h 22m

    Direct

    13:34

    MCO

    S M T W T F S
    Search

  12. F92635

    Orlando International Airport

    15:00

    MCO

    2h 34m

    Direct

    16:34

    STL

    S - - W T F S

  13. F94409

    Dulles International Airport

    21:04

    IAD

    2h 1m

    Direct

    23:05

    ATL

    S M T W T F S
    Search

  14. DL1571

    Hartsfield–Jackson Atlanta International Airport

    08:20

    ATL

    1h 40m

    Direct

    09:00

    STL

    S M T W T F S

  15. F94409

    Dulles International Airport

    21:04

    IAD

    2h 1m

    Direct

    23:05

    ATL

    S M T W T F S
    Search

  16. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -

  17. DL1657

    Dulles International Airport

    18:12

    IAD

    2h

    Direct

    20:12

    ATL

    - M T - - F -
    Search

  18. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -

  19. DL2135

    Dulles International Airport

    16:00

    IAD

    1h 56m

    Direct

    17:56

    ATL

    S - - - - - S
    Search

  20. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Direct

    13:10

    STL

    S - T - T - -
Find more flights and airlines

About Dulles International Airport and St. Louis Lambert International Airport

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

Flight distance 1,119.28km
Cheapest one-way ticket price BRL 230
Cheapest return ticket price BRL 1,054

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

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

    Dulles International Airport to St. Louis Lambert International Airport takes about 1 hour 46 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 2 daily flights from Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL).
  • The earliest flight from Dulles International Airport to St. Louis Lambert International Airport departs at 08:20, and the last departs at 17:55, with about 4 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) is quite popular. Without considering departure times or holidays, tickets cost around BRL 1,627 in October, the most expensive month to book this route.
    • The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.
  • United Airlines is a very popular airline operating an average of 712 flights per month.
  • One-way flights from Dulles International Airport to St. Louis Lambert International Airport currently start from BRL 230, and round-trip fares start from BRL 1,054. The current lowest fare is a Frontier Airlines flight departing on Wed, Oct 21; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from Dulles International Airport to St. Louis Lambert International Airport, with an average flight time of 1 hour 39 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 Dulles International Airport to St. Louis Lambert International Airport is BRL 1,070. Prices may vary depending on the departure date, airline, and availability.
  • Dulles International Airport to St. Louis Lambert International Airport operates around 13 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Dulles International Airport and St. Louis Lambert 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.

Most popular destination

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, regulatory fees, etc) with all fees confirmed before payment. Fees for baggage, meals, Wi-Fi, 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.