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Flights from St. Louis to Singapore

Cheap flight deals from St. Louis to Singapore

Find flight deals from St. Louis to Singapore for the next 3 months. Book one way flights from £413 or round trip flights from £2,890.

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Deals on upcoming one-way flights from St. Louis to Singapore

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Flight Info | St. Louis to Singapore

The distance between St. Louis and Singapore is about 15,350.75 km. The most popular month to Singapore is May. The off-season for travel is April.

Cheapest one-way flight price£413
Cheapest return ticket price£2,890
Off-season for travelApril
Peak season for travelMay
Flight distance15,350.75 km

When is the cheapest time to fly from St. Louis to Singapore?

The cheapest time for St. Louis to Singapore flights: Oct 12 to Oct 19 — one way flight prices from £316.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Oct

    285
  • 512
  • 1219
  • 1926

  • Nov

    262
  • 29
  • 916
  • 1623
  • 2330
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from St. Louis to Singapore (STL-SIN)?

    Based on Trip.com data, United Airlines offers one-way fares as low as £413 on Cheapest nonstop routes (e.g. STL to SIN on Sat, Sep 13), while Lufthansa offers Cheapest nonstop round-trips from £2,890 departing on Fri, Oct 31 and returning on Tue, Nov 4.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to Singapore is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from St. Louis to Singapore, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Sep 13, with one-way flights priced at just £413.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Singapore travel is around May.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from St. Louis to Singapore is April, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from St. Louis to Singapore on September 22, 2025 with United Airlines, with prices starting at £794.
  • The time difference between Singapore and St. Louis is 14h.
  • Tickets can only be changed or canceled if permitted by airline policy. 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. However, 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.

How to find a cheap flight from St. Louis to Singapore

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Singapore. Book your flights at the right time and save more.
1
Being flexible with your dates to get the cheapest St. Louis to Singapore ticket.
Tap "Date" on flight search bar to scan through the calender for St. Louis to Singapore airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Sat, Sep 13 at £413 for one-way flights.
2
Compare cheap St. Louis to Singapore flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from St. Louis to Singapore. The cheapest airline operating is United Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your St. Louis to Singapore route, you can easily track the price of your airline tickets from without manually checking every day.
4
Don't miss cheap St. Louis to Singapore flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from St. Louis to Singapore to get exclusive deals for you.

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