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St. Louis Lambert International Airport to Suvarnabhumi Intl. Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Suvarnabhumi Intl. Airport over the next 90 days, with one-way fares from €521 and round-trip from €998. Based on Trip.com's latest 7-day flight data.

    • STL 7:26 AM
      38h 9m
      2 stops
      BKK 10:35 AM
      St. Louis - Bangkok | Wed, Nov 18 | Cathay Pacific
      BKK 7:15 PM
      34h 29m
      2 stops
      STL 4:44 PM
      Bangkok - St. Louis | Wed, Nov 25 | Cathay Pacific
      €998 €1,212
      18% off
      18% off
      €1,212 €998
    • STL 11:00 AM
      35h 30m
      2 stops
      BKK 11:30 AM
      St. Louis - Bangkok | Wed, Nov 18 | United Airlines
      BKK 4:55 PM
      29h
      2 stops
      STL 8:55 AM
      Bangkok - St. Louis | Wed, Nov 25 | United Airlines
      €1,019 €1,212
      16% off
      16% off
      €1,212 €1,019
    • STL 7:26 AM
      27h 49m
      2 stops
      BKK 12:15 AM
      St. Louis - Bangkok | Wed, Nov 4 | American Airlines
      BKK 7:30 AM
      29h 29m
      2 stops
      STL 11:59 PM
      Bangkok - St. Louis | Tue, Nov 10 | Cathay Pacific
      €1,020 €1,212
      16% off
      16% off
      €1,212 €1,020
    • STL 7:30 AM
      26h 20m
      2 stops
      BKK 10:50 PM
      St. Louis - Bangkok | Wed, Nov 18 | All Nippon Airways
      BKK 10:25 PM
      31h 34m
      2 stops
      STL 4:59 PM
      Bangkok - St. Louis | Wed, Nov 25 | All Nippon Airways
      €1,060
      13% off
      €1,212 €1,060
    • STL 6:00 AM
      29h 45m
      2 stops
      BKK 12:45 AM
      St. Louis - Bangkok | Fri, Nov 13 | Delta Air Lines
      BKK 12:55 AM
      25h 28m
      2 stops
      STL 1:23 PM
      Bangkok - St. Louis | Fri, Nov 20 | Delta Air Lines
      €1,071
      12% off
      €1,212 €1,071
    • STL 8:50 AM
      37h 40m
      2 stops
      BKK 11:30 AM
      St. Louis - Bangkok | Wed, Nov 11 | United Airlines
      BKK 7:10 AM
      47h 55m
      2 stops
      STL 6:05 PM
      Bangkok - St. Louis | Tue, Nov 17 | United Airlines
      €1,073
      11% off
      €1,212 €1,073
    • STL 10:21 AM
      29h 44m
      2 stops
      BKK 5:05 AM
      St. Louis - Bangkok | Fri, Nov 13 | American Airlines
      BKK 7:55 AM
      25h 47m
      2 stops
      STL 8:42 PM
      Bangkok - St. Louis | Tue, Nov 17 | American Airlines
      €1,074
      11% off
      €1,212 €1,074
    • STL 7:26 AM
      27h 9m
      2 stops
      BKK 11:35 PM
      St. Louis - Bangkok | Thu, Nov 26 | American Airlines
      BKK 10:05 PM
      31h 42m
      2 stops
      STL 4:47 PM
      Bangkok - St. Louis | Thu, Dec 3 | American Airlines
      €1,075
      11% off
      €1,212 €1,075
    • STL 7:26 AM
      43h 59m
      2 stops
      BKK 4:25 PM
      St. Louis - Bangkok | Thu, Nov 26 | Japan Airlines
      BKK 7:55 AM
      39h 57m
      2 stops
      STL 10:52 AM
      Bangkok - St. Louis | Thu, Dec 3 | Japan Airlines
      €1,076
      11% off
      €1,212 €1,076
    • STL 1:00 PM
      17h 25m
      1 stop
      BKK 2:00 PM
      St. Louis - Bangkok | Mon, Nov 2 | Normal Airline
      BKK 3:00 PM
      6h
      Nonstop
      STL 4:00 PM
      Bangkok - St. Louis | Wed, Nov 4 | Normal Airline
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    • Cheapest
      STL 3:40 PM
      25h
      2 stops
      BKK 5:40 AM
      St. Louis - Bangkok | Fri, Dec 11 | Lufthansa
      €1,106 €4,889
      77% off
      77% off
      €4,889 €1,106
    • STL 9:56 AM
      24h 44m
      2 stops
      BKK 11:40 PM
      St. Louis - Bangkok | Fri, Nov 20 | American Airlines
      €1,150 €4,889
      76% off
      76% off
      €4,889 €1,150
    • STL 4:05 PM
      26h
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Sun, Nov 1 | Air Canada
      €1,275 €4,889
      74% off
      74% off
      €4,889 €1,275
    • STL 5:38 PM
      24h 27m
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Fri, Dec 11 | American Airlines
      €1,312
      73% off
      €4,889 €1,312
    • STL 4:05 PM
      26h
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Sat, Nov 21 | Air Canada
      €1,372
      72% off
      €4,889 €1,372
    • STL 7:18 PM
      25h 47m
      2 stops
      BKK 10:05 AM
      St. Louis - Bangkok | Wed, Nov 18 | Delta Air Lines
      €1,460
      70% off
      €4,889 €1,460
    • STL 7:08 AM
      25h 22m
      2 stops
      BKK 9:30 PM
      St. Louis - Bangkok | Sat, Nov 21 | Korean Air
      €1,677
      66% off
      €4,889 €1,677
    • STL 7:18 PM
      25h 47m
      2 stops
      BKK 10:05 AM
      St. Louis - Bangkok | Fri, Nov 20 | KLM
      €2,085
      56% off
      €4,889 €2,085
    • STL 7:30 AM
      26h 20m
      2 stops
      BKK 10:50 PM
      St. Louis - Bangkok | Thu, Nov 19 | United Airlines
      €2,142
      56% off
      €4,889 €2,142
    • STL 1:00 PM
      17h 25m
      1 stop
      BKK 2:00 PM
      St. Louis - Bangkok | Mon, Nov 2 | Normal Airline
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    • STL 7:26 AM
      27h 49m
      2 stops
      BKK 12:15 AM
      St. Louis - Bangkok | Tue, Nov 3 | American Airlines
      €521 €1,585
      67% off
      67% off
      €1,585 €521
    • STL 7:26 AM
      27h 49m
      2 stops
      BKK 12:15 AM
      St. Louis - Bangkok | Tue, Nov 3 | Cathay Pacific
      €564 €1,585
      64% off
      64% off
      €1,585 €564
    • STL 7:26 AM
      27h 9m
      2 stops
      BKK 11:35 PM
      St. Louis - Bangkok | Tue, Nov 3 | Japan Airlines
      €569 €1,585
      64% off
      64% off
      €1,585 €569
    • STL 7:26 AM
      27h 9m
      2 stops
      BKK 11:35 PM
      St. Louis - Bangkok | Thu, Nov 5 | American Airlines
      €613
      61% off
      €1,585 €613
    • STL 3:40 PM
      27h 30m
      2 stops
      BKK 8:10 AM
      St. Louis - Bangkok | Sun, Nov 22 | Lufthansa
      €679
      56% off
      €1,585 €679
    • STL 6:40 AM
      28h 30m
      2 stops
      BKK 12:10 AM
      St. Louis - Bangkok | Thu, Nov 19 | Delta Air Lines
      €773
      51% off
      €1,585 €773
    • STL 6:32 AM
      27h 33m
      2 stops
      BKK 11:05 PM
      St. Louis - Bangkok | Fri, Dec 11 | Delta Air Lines
      €805
      49% off
      €1,585 €805
    • STL 6:32 AM
      26h 28m
      2 stops
      BKK 10:00 PM
      St. Louis - Bangkok | Fri, Dec 11 | Korean Air
      €843
      47% off
      €1,585 €843
    • STL 6:00 AM
      29h 20m
      2 stops
      BKK 12:20 AM
      St. Louis - Bangkok | Fri, Nov 20 | Alaska Airlines
      €871
      45% off
      €1,585 €871
    • STL 1:00 PM
      17h 25m
      1 stop
      BKK 2:00 PM
      St. Louis - Bangkok | Mon, Nov 2 | Normal Airline
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    • STL 5:38 PM
      24h 27m
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Fri, Dec 11 | American Airlines
      €1,312 €4,889
      73% off
      73% off
      €4,889 €1,312
    • STL 9:56 AM
      24h 44m
      2 stops
      BKK 11:40 PM
      St. Louis - Bangkok | Fri, Nov 20 | American Airlines
      €1,150 €4,889
      76% off
      76% off
      €4,889 €1,150
    • STL 3:40 PM
      25h
      2 stops
      BKK 5:40 AM
      St. Louis - Bangkok | Fri, Dec 11 | Lufthansa
      €1,106 €4,889
      77% off
      77% off
      €4,889 €1,106
    • STL 7:08 AM
      25h 22m
      2 stops
      BKK 9:30 PM
      St. Louis - Bangkok | Sat, Nov 21 | Korean Air
      €1,677
      66% off
      €4,889 €1,677
    • STL 3:40 PM
      25h 45m
      1 stop
      BKK 6:25 AM
      St. Louis - Bangkok | Sat, Nov 21 | United Airlines
      €7,544
      10% off
      €8,383 €7,544
    • STL 7:18 PM
      25h 47m
      2 stops
      BKK 10:05 AM
      St. Louis - Bangkok | Wed, Nov 18 | Delta Air Lines
      €1,460
      70% off
      €4,889 €1,460
    • STL 7:18 PM
      25h 47m
      2 stops
      BKK 10:05 AM
      St. Louis - Bangkok | Fri, Nov 20 | KLM
      €2,085
      56% off
      €4,889 €2,085
    • STL 4:05 PM
      26h
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Sun, Nov 1 | Air Canada
      €1,275
      74% off
      €4,889 €1,275
    • STL 4:05 PM
      26h
      2 stops
      BKK 7:05 AM
      St. Louis - Bangkok | Sat, Nov 21 | Air Canada
      €1,372
      72% off
      €4,889 €1,372
    • STL 1:00 PM
      17h 25m
      1 stop
      BKK 2:00 PM
      St. Louis - Bangkok | Mon, Nov 2 | Normal Airline
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    • STL 7:26 AM
      27h 49m
      2 stops
      BKK 12:15 AM
      St. Louis - Bangkok | Tue, Nov 3 | American Airlines
      €521 €682
      24% off
      24% off
      €682 €521
    • STL 7:26 AM
      27h 49m
      2 stops
      BKK 12:15 AM
      St. Louis - Bangkok | Tue, Nov 3 | Cathay Pacific
      €564 €682
      17% off
      17% off
      €682 €564
    • STL 7:26 AM
      27h 9m
      2 stops
      BKK 11:35 PM
      St. Louis - Bangkok | Tue, Nov 3 | Japan Airlines
      €569 €682
      17% off
      17% off
      €682 €569
    • STL 7:26 AM
      27h 9m
      2 stops
      BKK 11:35 PM
      St. Louis - Bangkok | Thu, Nov 5 | American Airlines
      €613
      10% off
      €682 €613
    • STL 1:00 PM
      17h 25m
      1 stop
      BKK 2:00 PM
      St. Louis - Bangkok | Mon, Nov 2 | Normal Airline
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Displayed flight fares from St. Louis to Bangkok 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 Suvarnabhumi Intl. Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Suvarnabhumi Intl. Airport is American Airlines (from €520) among 9 carriers operating this route. Based on Trip.com's latest 7-day flight data.

American Airlines
From €520
Korean Air
From €555
Cathay Pacific
From €564
Alaska Airlines
From €570
Delta Air Lines
From €571
United Airlines
From €573
STARLUX Airlines
From €573
Japan Airlines
From €576
All Nippon Airways
From €586

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. KE7036

    St. Louis Lambert International Airport

    7:20 AM

    STL

    1h 39m

    Nonstop

    9:59 AM

    ATL

    S M T W T F S
    Search

  2. KE034

    Hartsfield–Jackson Atlanta International Airport

    10:45 AM

    ATL

    15h 55m

    Nonstop

    4:40 PM

    ICN

    S M T W T F S

  3. KE653

    Incheon Intl. Airport

    7:05 PM

    ICN

    6h

    Nonstop

    11:05 PM

    BKK

    S M T W T F S

  4. CX7611

    St. Louis Lambert International Airport

    7:25 AM

    STL

    1h 34m

    Nonstop

    8:59 AM

    ORD

    S M T W T F S
    Search

  5. CX807

    O'Hare Intl. Airport

    2:10 PM

    ORD

    15h 55m

    Nonstop

    8:05 PM

    HKG

    S M T W T F S

  6. CX617

    Hong Kong Intl. Airport

    10:15 PM

    HKG

    2h 55m

    Nonstop

    12:10 AM

    BKK

    S M T W T F S

  7. KE3735

    St. Louis Lambert International Airport

    6:00 AM

    STL

    1h 40m

    Nonstop

    8:40 AM

    ATL

    S M T W T F S
    Search

  8. KE034

    Hartsfield–Jackson Atlanta International Airport

    10:45 AM

    ATL

    15h 55m

    Nonstop

    4:40 PM

    ICN

    S M T W T F S

  9. KE653

    Incheon Intl. Airport

    7:05 PM

    ICN

    6h

    Nonstop

    11:05 PM

    BKK

    S M T W T F S

  10. KE7036

    St. Louis Lambert International Airport

    7:20 AM

    STL

    1h 39m

    Nonstop

    9:59 AM

    ATL

    S M T W T F S
    Search

  11. KE036

    Hartsfield–Jackson Atlanta International Airport

    12:25 PM

    ATL

    15h 55m

    Nonstop

    6:20 PM

    ICN

    S M T W T F S

  12. KE659

    Incheon Intl. Airport

    8:15 PM

    ICN

    6h 5m

    Nonstop

    12:20 AM

    BKK

    S M T W T F S

  13. UA4439

    St. Louis Lambert International Airport

    5:00 AM

    STL

    1h 24m

    Nonstop

    6:24 AM

    ORD

    S M T W T F S
    Search

  14. UA867

    O'Hare Intl. Airport

    11:20 AM

    ORD

    12h 5m

    Nonstop

    2:25 PM

    NRT

    S M T W T F S

  15. UA7940

    Narita Intl. Airport

    5:30 PM

    NRT

    6h 45m

    Nonstop

    10:15 PM

    BKK

    S M T W T F S

  16. CX7885

    St. Louis Lambert International Airport

    6:00 AM

    STL

    4h 36m

    Nonstop

    8:36 AM

    SEA

    S M T W - F -
    Search

  17. CX833

    Seattle Tacoma Intl. Airport

    10:25 AM

    SEA

    14h 20m

    Nonstop

    4:45 PM

    HKG

    S M T W - F -

  18. CX617

    Hong Kong Intl. Airport

    10:15 PM

    HKG

    2h 55m

    Nonstop

    12:10 AM

    BKK

    S M T W T F S

  19. KE3735

    St. Louis Lambert International Airport

    6:00 AM

    STL

    1h 40m

    Nonstop

    8:40 AM

    ATL

    S M T W T F S
    Search

  20. KE034

    Hartsfield–Jackson Atlanta International Airport

    10:45 AM

    ATL

    15h 55m

    Nonstop

    4:40 PM

    ICN

    S M T W T F S

  21. KE659

    Incheon Intl. Airport

    8:15 PM

    ICN

    6h 5m

    Nonstop

    12:20 AM

    BKK

    S M T W T F S

  22. UA663

    St. Louis Lambert International Airport

    4:39 PM

    STL

    2h 31m

    Nonstop

    6:10 PM

    DEN

    S M T W T F S
    Search

  23. UA1955

    Denver International Airport

    7:09 PM

    DEN

    2h 39m

    Nonstop

    8:48 PM

    LAX

    S M T W T F S

  24. UA820

    Los Angeles Intl. Airport

    10:50 PM

    LAX

    21h 40m

    Nonstop

    11:30 AM

    BKK

    S M T W T F S

  25. AA2103

    St. Louis Lambert International Airport

    8:29 AM

    STL

    2h 9m

    Nonstop

    10:38 AM

    DFW

    S M T W T F S
    Search

  26. AA175

    Dallas Fort Worth International Airport

    1:25 PM

    DFW

    14h

    Nonstop

    6:25 PM

    HND

    S M T W T F S

  27. AA8485

    Haneda Airport

    1:20 AM

    HND

    6h 30m

    Nonstop

    5:50 AM

    BKK

    S M T W T F S

  28. JL7427

    St. Louis Lambert International Airport

    9:04 AM

    STL

    1h 29m

    Nonstop

    10:33 AM

    ORD

    S M T W T F -
    Search

  29. JL009

    O'Hare Intl. Airport

    1:30 PM

    ORD

    13h 20m

    Nonstop

    5:50 PM

    HND

    S M T W T F S

  30. JL033

    Haneda Airport

    12:10 AM

    HND

    6h 55m

    Nonstop

    5:05 AM

    BKK

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

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

Flight distance 14,086.75 km
Cheapest one-way ticket price €1,106
Cheapest return ticket price €998

FAQs for St. Louis Lambert International Airport to Suvarnabhumi Intl. Airport Flights

  • What is the transportation method from the main airport to downtown in Bangkok?

    • The distance from Suvarnabhumi Airport to downtown is about 24 km. It takes about 40 minutes by taxi.
    • The distance from Don Mueang International Airport to downtown is about 22 km. It takes about 40 minutes by taxi.
  • One-way flights from St. Louis Lambert International Airport to Suvarnabhumi Intl. Airport currently start from €7,544, and round-trip fares start from €998. The current lowest fare is a United Airlines flight departing on Sat, Nov 21; prices may vary depending on availability.
  • 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 Suvarnabhumi Intl. Airport is €6,559. Prices may vary depending on the departure date, airline, and availability.
  • Enter St. Louis Lambert International Airport and Suvarnabhumi Intl. 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

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.