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St. Louis Lambert International Airport to Changi Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Changi Airport over the next 90 days, with one-way fares from CAD 985 and round-trip from CAD 1,823. Based on Trip.com's latest 7-day flight data.

    • STL 7:05 PM
      22h 55m
      1 stop
      SIN 7:00 AM
      St. Louis - Singapore | Fri, Nov 13 | United Airlines
      SIN 10:20 PM
      33h 45m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Fri, Nov 20 | United Airlines
      CAD 1,823 CAD 2,532
      28% off
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:05 PM
      22h 55m
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sun, Nov 29 | United Airlines
      SIN 10:10 AM
      21h 55m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Sun, Dec 6 | United Airlines
      CAD 1,823 CAD 2,532
      28% off
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:05 PM
      22h 55m
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sat, Nov 28 | United Airlines
      SIN 10:10 AM
      21h 55m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Sat, Dec 5 | United Airlines
      CAD 1,823 CAD 2,532
      28% off
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:08 AM
      34h 7m
      1 stop
      SIN 6:15 AM
      St. Louis - Singapore | Sat, Oct 31 | United Airlines
      SIN 10:10 AM
      25h 5m
      1 stop
      STL 10:15 PM
      Singapore - St. Louis | Sat, Nov 7 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:08 AM
      22h 27m
      1 stop
      SIN 6:35 PM
      St. Louis - Singapore | Sun, Nov 1 | United Airlines
      SIN 10:20 PM
      32h 45m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Sun, Nov 8 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:08 AM
      22h 27m
      1 stop
      SIN 6:35 PM
      St. Louis - Singapore | Mon, Nov 2 | United Airlines
      SIN 10:20 PM
      32h 45m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Mon, Nov 9 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 7:08 AM
      22h 27m
      1 stop
      SIN 6:35 PM
      St. Louis - Singapore | Tue, Nov 3 | United Airlines
      SIN 10:10 AM
      20h 55m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Tue, Nov 10 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sat, Nov 14 | United Airlines
      SIN 10:10 AM
      21h 55m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Sat, Nov 21 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sun, Nov 15 | United Airlines
      SIN 10:10 AM
      21h 55m
      1 stop
      STL 6:05 PM
      Singapore - St. Louis | Sun, Nov 22 | United Airlines
      CAD 1,823
      28% off
      CAD 2,532 CAD 1,823
    • STL 1:00 PM
      17h 25m
      1 stop
      SIN 2:00 PM
      St. Louis - Singapore | Sun, Nov 1 | Normal Airline
      SIN 3:00 PM
      6h
      Nonstop
      STL 4:00 PM
      Singapore - St. Louis | Tue, Nov 3 | Normal Airline
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    • Cheapest
      STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Wed, Nov 4 | United Airlines
      CAD 985 CAD 2,067
      52% off
      52% off
      CAD 2,067 CAD 985
    • Cheapest
      STL 7:05 PM
      35h 10m
      1 stop
      SIN 8:15 PM
      St. Louis - Singapore | Thu, Nov 5 | United Airlines
      CAD 985 CAD 2,067
      52% off
      52% off
      CAD 2,067 CAD 985
    • Cheapest
      STL 7:05 PM
      35h 10m
      1 stop
      SIN 8:15 PM
      St. Louis - Singapore | Fri, Nov 6 | United Airlines
      CAD 985 CAD 2,067
      52% off
      52% off
      CAD 2,067 CAD 985
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sun, Nov 1 | United Airlines
      CAD 1,030
      50% off
      CAD 2,067 CAD 1,030
    • STL 3:40 PM
      25h 10m
      1 stop
      SIN 6:50 AM
      St. Louis - Singapore | Wed, Nov 4 | Lufthansa
      CAD 1,218
      41% off
      CAD 2,067 CAD 1,218
    • STL 3:40 PM
      35h 25m
      1 stop
      SIN 5:05 PM
      St. Louis - Singapore | Sun, Nov 1 | Lufthansa
      CAD 1,236
      40% off
      CAD 2,067 CAD 1,236
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Wed, Nov 18 | United Airlines
      CAD 1,345
      35% off
      CAD 2,067 CAD 1,345
    • STL 3:40 PM
      35h 25m
      1 stop
      SIN 5:05 PM
      St. Louis - Singapore | Fri, Nov 6 | Lufthansa
      CAD 1,369
      34% off
      CAD 2,067 CAD 1,369
    • STL 3:40 PM
      35h 25m
      1 stop
      SIN 5:05 PM
      St. Louis - Singapore | Fri, Nov 13 | Lufthansa
      CAD 1,384
      33% off
      CAD 2,067 CAD 1,384
    • STL 1:00 PM
      17h 25m
      1 stop
      SIN 2:00 PM
      St. Louis - Singapore | Sun, Nov 1 | Normal Airline
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    • STL 6:05 PM
      24h 55m
      2 stops
      SIN 9:00 AM
      St. Louis - Singapore | Fri, Dec 11 | Air France
      CAD 1,959 CAD 2,721
      28% off
      28% off
      CAD 2,721 CAD 1,959
    • STL 6:05 PM
      24h 55m
      2 stops
      SIN 9:00 AM
      St. Louis - Singapore | Sun, Dec 13 | Air France
      CAD 1,959 CAD 2,721
      28% off
      28% off
      CAD 2,721 CAD 1,959
    • STL 3:40 PM
      25h 10m
      1 stop
      SIN 6:50 AM
      St. Louis - Singapore | Wed, Nov 4 | Lufthansa
      CAD 1,218 CAD 2,067
      41% off
      41% off
      CAD 2,067 CAD 1,218
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Wed, Nov 4 | United Airlines
      CAD 985
      52% off
      CAD 2,067 CAD 985
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Sun, Nov 1 | United Airlines
      CAD 1,030
      50% off
      CAD 2,067 CAD 1,030
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Wed, Nov 18 | United Airlines
      CAD 1,345
      35% off
      CAD 2,067 CAD 1,345
    • STL 8:00 AM
      34h
      1 stop
      SIN 8:00 AM
      St. Louis - Singapore | Mon, Nov 2 | United Airlines
      CAD 1,393
      33% off
      CAD 2,067 CAD 1,393
    • STL 7:05 PM
      35h 10m
      1 stop
      SIN 8:15 PM
      St. Louis - Singapore | Thu, Nov 5 | United Airlines
      CAD 985
      52% off
      CAD 2,067 CAD 985
    • STL 7:05 PM
      35h 10m
      1 stop
      SIN 8:15 PM
      St. Louis - Singapore | Fri, Nov 6 | United Airlines
      CAD 985
      52% off
      CAD 2,067 CAD 985
    • STL 1:00 PM
      17h 25m
      1 stop
      SIN 2:00 PM
      St. Louis - Singapore | Sun, Nov 1 | Normal Airline
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Displayed flight fares from St. Louis to Singapore 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 Changi Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Changi Airport is Qatar Airways (from CAD 901) among 9 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Qatar Airways
From CAD 901
American Airlines
From CAD 982
United Airlines
From CAD 985
Delta Air Lines
From CAD 1,025
All Nippon Airways
From CAD 1,078
Korean Air
From CAD 1,086
Lufthansa
From CAD 1,209
Turkish Airlines
From CAD 1,213
Alaska Airlines
From CAD 1,759

Find more flights and airlines

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. LH449

    St. Louis Lambert International Airport

    3:40 PM

    STL

    8h 50m

    Nonstop

    7:30 AM

    FRA

    - - T - T - S
    Search

  2. LH9762

    Frankfurt Intl. Airport

    11:25 AM

    FRA

    12h 25m

    Nonstop

    6:50 AM

    SIN

    S M T W T F S

  3. UA2414

    St. Louis Lambert International Airport

    7:30 AM

    STL

    1h 30m

    Nonstop

    9:00 AM

    ORD

    S M T W T F S
    Search

  4. KE038

    O'Hare Intl. Airport

    12:10 PM

    ORD

    14h 40m

    Nonstop

    4:50 PM

    ICN

    S M T W T F S

  5. KE645

    Incheon Intl. Airport

    6:40 PM

    ICN

    6h 15m

    Nonstop

    11:55 PM

    SIN

    S M T W T F S

  6. LH8923

    St. Louis Lambert International Airport

    1:08 PM

    STL

    1h 31m

    Nonstop

    2:39 PM

    ORD

    S M T W T F S
    Search

  7. LH431

    O'Hare Intl. Airport

    4:05 PM

    ORD

    7h 20m

    Nonstop

    6:25 AM

    FRA

    S M T W T F S

  8. LH9762

    Frankfurt Intl. Airport

    11:25 AM

    FRA

    12h 25m

    Nonstop

    6:50 AM

    SIN

    S M T W T F S

  9. 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

  10. KE034

    Hartsfield–Jackson Atlanta International Airport

    11:45 AM

    ATL

    15h 55m

    Nonstop

    4:40 PM

    ICN

    S M T W T F S

  11. KE645

    Incheon Intl. Airport

    6:40 PM

    ICN

    6h 15m

    Nonstop

    11:55 PM

    SIN

    S M T W T F S

  12. TK9564

    St. Louis Lambert International Airport

    7:29 AM

    STL

    1h 31m

    Nonstop

    9:00 AM

    ORD

    S M T W T F S
    Search

  13. TK186

    O'Hare Intl. Airport

    11:45 AM

    ORD

    10h 25m

    Nonstop

    7:10 AM

    IST

    S M T W T F S

  14. TK022

    Istanbul Airport

    3:20 PM

    IST

    10h 30m

    Nonstop

    6:50 AM

    SIN

    S - T W T F -

  15. NH7589

    St. Louis Lambert International Airport

    8:05 AM

    STL

    1h 40m

    Nonstop

    9:45 AM

    ORD

    S M T W T F S
    Search

  16. NH111

    O'Hare Intl. Airport

    5:45 PM

    ORD

    12h 30m

    Nonstop

    9:15 PM

    HND

    S M T W T F S

  17. NH843

    Haneda Airport

    12:25 AM

    HND

    7h 30m

    Nonstop

    6:55 AM

    SIN

    S M T W T F S

  18. UA1257

    St. Louis Lambert International Airport

    8:00 AM

    STL

    4h 36m

    Nonstop

    10:36 AM

    SFO

    S M T W T F S
    Search

  19. UA001

    San Francisco Intl. Airport

    10:40 PM

    SFO

    15h 35m

    Nonstop

    6:15 AM

    SIN

    S M T W T F S

  20. DL1492

    St. Louis Lambert International Airport

    5:00 PM

    STL

    3h 26m

    Nonstop

    7:26 PM

    SLC

    S M T W T F S
    Search

  21. DL2016

    Salt Lake City International Airport

    8:45 PM

    SLC

    2h 25m

    Nonstop

    10:10 PM

    SEA

    S M T W T F S

  22. SQ027

    Seattle Tacoma Intl. Airport

    9:40 AM

    SEA

    17h 5m

    Nonstop

    5:45 PM

    SIN

    - M T W T F S

  23. UA214

    St. Louis Lambert International Airport

    7:05 PM

    STL

    4h 36m

    Nonstop

    9:41 PM

    SFO

    - - - W T F S
    Search

  24. UA029

    San Francisco Intl. Airport

    10:50 AM

    SFO

    15h 45m

    Nonstop

    6:35 PM

    SIN

    S M T W T F S

  25. LH449

    St. Louis Lambert International Airport

    3:40 PM

    STL

    8h 50m

    Nonstop

    7:30 AM

    FRA

    - - T - T - S
    Search

  26. LH780

    Frankfurt Intl. Airport

    9:40 PM

    FRA

    12h 25m

    Nonstop

    5:05 PM

    SIN

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

About St. Louis Lambert International Airport and Changi Airport

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

Flight distance 15,337.23 km
Cheapest one-way ticket price CAD 985
Cheapest return ticket price CAD 1,823

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

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

    • The distance from Singapore Changi Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
    • The distance from Seletar Airport to downtown is about 15 km. It takes about 30 minutes by taxi.
  • One-way flights from St. Louis Lambert International Airport to Changi Airport currently start from CAD 985, and round-trip fares start from CAD 1,823. The current lowest fare is a United Airlines flight departing on Wed, Nov 4; 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 Changi Airport is CAD 1,805. Prices may vary depending on the departure date, airline, and availability.
  • Enter St. Louis Lambert International Airport and Changi 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.