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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 €47 and round-trip from €105. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        STL 13:00
        2h 9m
        Nonstop
        IAD 16:09
        St. Louis - Washington D.C. | Fri, Nov 13 | United Airlines
        IAD 08:40
        2h 32m
        Nonstop
        STL 10:12
        Washington D.C. - St. Louis | Fri, Nov 20 | United Airlines
        €262 €449
        42% off
        42% off
        €449 €262
      • STL 13:00
        2h 9m
        Nonstop
        IAD 16:09
        St. Louis - Washington D.C. | Wed, Nov 4 | United Airlines
        IAD 08:40
        2h 32m
        Nonstop
        STL 10:12
        Washington D.C. - St. Louis | Sat, Nov 7 | United Airlines
        €350 €449
        22% off
        22% off
        €449 €350
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Tue, Oct 20 | Frontier Airlines
        IAD 07:50
        10h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Tue, Oct 27 | Frontier Airlines
        €105 €449
        77% off
        77% off
        €449 €105
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Sun, Oct 11 | Frontier Airlines
        IAD 07:50
        6h 20m
        1 stop
        STL 13:10
        Washington D.C. - St. Louis | Tue, Oct 13 | Frontier Airlines
        €118
        74% off
        €449 €118
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Tue, Oct 27 | Frontier Airlines
        IAD 07:50
        10h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Sun, Nov 1 | Frontier Airlines
        €122
        73% off
        €449 €122
      • STL 18:39
        14h 38m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Wed, Sep 30 | Frontier Airlines
        IAD 07:50
        6h 20m
        1 stop
        STL 13:10
        Washington D.C. - St. Louis | Tue, Oct 6 | Frontier Airlines
        €140
        69% off
        €449 €140
      • STL 18:39
        14h 38m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Wed, Oct 7 | Frontier Airlines
        IAD 07:50
        6h 20m
        1 stop
        STL 13:10
        Washington D.C. - St. Louis | Sun, Oct 11 | Frontier Airlines
        €149
        67% off
        €449 €149
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Thu, Oct 15 | Frontier Airlines
        IAD 07:50
        10h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Sun, Oct 18 | Frontier Airlines
        €160
        64% off
        €449 €160
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Tue, Oct 13 | Frontier Airlines
        IAD 07:50
        10h 50m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Sun, Oct 18 | Frontier Airlines
        €162
        64% off
        €449 €162
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Tue, Oct 6 | Frontier Airlines
        DCA 13:06
        7h 11m
        1 stop
        STL 19:17
        Washington D.C. - St. Louis | Fri, Oct 9 | Frontier Airlines
        €163
        64% off
        €449 €163
      • STL 16:26
        16h 55m
        1 stop
        IAD 10:21
        St. Louis - Washington D.C. | Fri, Nov 6 | Frontier Airlines
        IAD 11:16
        13h
        1 stop
        STL 23:16
        Washington D.C. - St. Louis | Fri, Nov 13 | Frontier Airlines
        €167
        63% off
        €449 €167
      • STL 16:30
        16h 47m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Wed, Oct 14 | Frontier Airlines
        IAD 11:12
        13h 1m
        1 stop
        STL 23:13
        Washington D.C. - St. Louis | Fri, Oct 16 | Frontier Airlines
        €169
        62% off
        €449 €169
      • STL 16:26
        16h 55m
        1 stop
        IAD 10:21
        St. Louis - Washington D.C. | Thu, Nov 19 | Frontier Airlines
        IAD 08:05
        10h 35m
        1 stop
        STL 17:40
        Washington D.C. - St. Louis | Tue, Nov 24 | Frontier Airlines
        €177
        61% off
        €449 €177
      • STL 12:17
        17h 3m
        1 stop
        IAD 06:20
        St. Louis - Washington D.C. | Mon, Sep 28 | Frontier Airlines
        IAD 06:00
        30h 32m
        1 stop
        STL 11:32
        Washington D.C. - St. Louis | Mon, Oct 5 | Frontier Airlines
        €178
        60% off
        €449 €178
      • STL 13:00
        17h 25m
        1 stop
        WAS 14:00
        St. Louis - Washington D.C. | Wed, Sep 23 | Normal Airline
        WAS 15:00
        6h
        Nonstop
        STL 16:00
        Washington D.C. - St. Louis | Fri, Sep 25 | Normal Airline
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      • Cheapest nonstop
        STL 13:00
        2h 9m
        Nonstop
        IAD 16:09
        St. Louis - Washington D.C. | Mon, Nov 16 | United Airlines
        €131 €168
        22% off
        22% off
        €168 €131
      • STL 08:00
        2h 10m
        Nonstop
        IAD 11:10
        St. Louis - Washington D.C. | Tue, Nov 10 | United Airlines
        €131 €168
        22% off
        22% off
        €168 €131
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Wed, Oct 21 | Frontier Airlines
        €47 €168
        72% off
        72% off
        €168 €47
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Wed, Oct 7 | Frontier Airlines
        €59
        65% off
        €168 €59
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Wed, Oct 14 | Frontier Airlines
        €61
        64% off
        €168 €61
      • STL 14:29
        25h 49m
        1 stop
        IAD 17:18
        St. Louis - Washington D.C. | Fri, Oct 2 | Frontier Airlines
        €64
        62% off
        €168 €64
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Fri, Oct 9 | Frontier Airlines
        €64
        62% off
        €168 €64
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Mon, Oct 5 | Frontier Airlines
        €74
        56% off
        €168 €74
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Fri, Oct 16 | Frontier Airlines
        €77
        54% off
        €168 €77
      • STL 16:30
        16h 47m
        1 stop
        IAD 10:17
        St. Louis - Washington D.C. | Mon, Oct 12 | Frontier Airlines
        €83
        51% off
        €168 €83
      • STL 18:35
        4h 46m
        1 stop
        IAD 00:21
        St. Louis - Washington D.C. | Mon, Oct 19 | Frontier Airlines
        €83
        51% off
        €168 €83
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Wed, Sep 30 | Frontier Airlines
        €85
        49% off
        €168 €85
      • STL 14:29
        8h 41m
        1 stop
        IAD 00:10
        St. Louis - Washington D.C. | Mon, Sep 28 | Frontier Airlines
        €88
        48% off
        €168 €88
      • STL 12:17
        17h 3m
        1 stop
        IAD 06:20
        St. Louis - Washington D.C. | Tue, Oct 6 | Frontier Airlines
        €90
        46% off
        €168 €90
      • STL 13:00
        17h 25m
        1 stop
        WAS 14:00
        St. Louis - Washington D.C. | Wed, Sep 23 | Normal Airline
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Displayed flight fares from St. Louis Lambert International Airport to Dulles International Airport 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 €48) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From €48
Delta Air Lines
From €99
American Airlines
From €113
United Airlines
From €126

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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. AA1515

    St. Louis Lambert International Airport

    05:32

    STL

    1h 57m

    Nonstop

    08:29

    CLT

    S M T W T F S
    Search

  2. AA5154

    Charlotte Douglas International Airport

    10:25

    CLT

    1h 31m

    Nonstop

    11:56

    IAD

    S M T W T F S

  3. AA3096

    St. Louis Lambert International Airport

    12:50

    STL

    1h 55m

    Nonstop

    15:45

    CLT

    S M T W T F S
    Search

  4. AA1954

    Charlotte Douglas International Airport

    17:37

    CLT

    1h 22m

    Nonstop

    18:59

    IAD

    S M T W T F S

  5. DL1393

    St. Louis Lambert International Airport

    18:45

    STL

    1h 41m

    Nonstop

    21:26

    ATL

    S M T W T - S
    Search

  6. DL2549

    Hartsfield–Jackson Atlanta International Airport

    23:00

    ATL

    1h 41m

    Nonstop

    00:41

    IAD

    S M T W T F S

  7. AA712

    St. Louis Lambert International Airport

    07:30

    STL

    1h 57m

    Nonstop

    10:27

    CLT

    S M T W T F S
    Search

  8. AA5154

    Charlotte Douglas International Airport

    10:25

    CLT

    1h 31m

    Nonstop

    11:56

    IAD

    S M T W T F S

  9. DL1524

    St. Louis Lambert International Airport

    06:00

    STL

    1h 41m

    Nonstop

    08:41

    ATL

    S M T W T F S
    Search

  10. DL1444

    Hartsfield–Jackson Atlanta International Airport

    09:44

    ATL

    1h 46m

    Nonstop

    11:30

    IAD

    S M T W T - S

  11. F94474

    St. Louis Lambert International Airport

    12:02

    STL

    1h 44m

    Nonstop

    14:46

    ATL

    S - T - T - -
    Search

  12. F93692

    Hartsfield–Jackson Atlanta International Airport

    22:24

    ATL

    1h 46m

    Nonstop

    00:10

    IAD

    S M T W T F S

  13. UA2792

    St. Louis Lambert International Airport

    08:00

    STL

    1h 31m

    Nonstop

    09:31

    ORD

    - - - W T F -
    Search

  14. UA1486

    O'Hare International Airport

    10:54

    ORD

    2h 5m

    Nonstop

    13:59

    IAD

    - - - W T F -

  15. DL543

    St. Louis Lambert International Airport

    17:30

    STL

    1h 40m

    Nonstop

    20:10

    ATL

    S M T W T F S
    Search

  16. DL2549

    Hartsfield–Jackson Atlanta International Airport

    23:00

    ATL

    1h 41m

    Nonstop

    00:41

    IAD

    S M T W T F S

  17. DL1524

    St. Louis Lambert International Airport

    06:00

    STL

    1h 41m

    Nonstop

    08:41

    ATL

    S M T W T F S
    Search

  18. DL2135

    Hartsfield–Jackson Atlanta International Airport

    12:20

    ATL

    1h 41m

    Nonstop

    14:01

    IAD

    S M T W T F S

  19. DL1400

    St. Louis Lambert International Airport

    12:00

    STL

    1h 35m

    Nonstop

    14:35

    ATL

    S M T W T F S
    Search

  20. DL1309

    Hartsfield–Jackson Atlanta International Airport

    19:49

    ATL

    1h 41m

    Nonstop

    21:30

    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 distance1,119.28 km
Cheapest one-way ticket price€47
Cheapest return ticket price€105

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 43 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 08:40, and the last departs at 13:00, 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 €290 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 €47, and round-trip fares start from €105. 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 St. Louis Lambert International Airport to Dulles International Airport, with an average flight time of 1 hour 41 minutes, and around 14 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 €160. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Dulles International Airport operates around 10 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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