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Cheap flights from St. Louis to Singapore from S$ 730

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14-10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
4 Sep — 11 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Singapore

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Singapore
Explore the most affordable flight options available from St. Louis to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 August 2026.

Wed 16-912:17 -
3 stops34h 53m
Wed 23-913:10 -
3 stops33h 25m
Deal found 3-8S$ 1,448
Thu 8-1008:00 -
2 stops32h 15m
Tue 20-1007:00 -
2 stops42h 40m
Deal found 31-7S$ 1,456
Mon 19-1012:10 -
2 stops52h 05m
Thu 29-1008:40 -
2 stops43h 46m
Deal found 2-8S$ 1,470
Mon 19-1015:30 -
1 stop26h 20m
Thu 29-1023:55 -
1 stop27h 50m
Deal found 2-8S$ 1,472
Thu 15-1012:10 -
2 stops28h 05m
Sun 25-1023:10 -
2 stops53h 16m
Deal found 31-7S$ 1,490
Tue 15-912:10 -
2 stops28h 05m
Tue 22-922:50 -
2 stops58h 30m
Deal found 1-8S$ 1,492
Tue 22-912:10 -
2 stops47h 20m
Mon 28-922:00 -
2 stops35h 20m
Deal found 2-8S$ 1,494
Wed 16-911:01 -
2 stops32h 49m
Wed 23-919:40 -
2 stops41h 19m
Deal found 3-8S$ 1,511
Fri 11-906:29 -
2 stops37h 21m
Thu 17-903:15 -
2 stops33h 44m
Deal found 4-8S$ 1,533

Find flight deals from St. Louis to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 5 August 2026.

Round-trip from

S$ 1,448

One-way from

S$ 730

Popular in

February

Cheapest in

October

Average price

S$ 1,686
16-9-23-9
  • 16-9-23-9
  • 6 total stops
  • 68h 18m total
  • St. Louis to Singapore
Search Deals
14-10
  • 14-10
  • 2 total stops
  • 34h 05m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (S$ 462 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (S$ 134 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from St. Louis to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 200,618 searches. Data last updated 5 August 2026.
Use the filters below to find and compare flights from St. Louis to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 8-10

08:00-05:15

2 stops32h 15m

Singapore Changi

Tue 20-10

07:00-12:40

2 stops42h 40m

S$ 1,456

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 11-9

08:42-06:15

1 stop32h 33m

Singapore Changi

Fri 18-9

08:45-18:38

1 stop22h 53m

S$ 1,656

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 15-10

07:08-18:35

1 stop22h 27m

Singapore Changi

Sun 25-10

22:20-20:59

2 stops35h 39m

S$ 1,661
Fastest return journey

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 29-8

16:40-06:15

2 stops24h 35m

Singapore Changi

Sat 5-9

08:45-23:40

2 stops27h 55m

S$ 1,661

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 16-9

10:53-06:15

2 stops30h 22m

Singapore Changi

Wed 23-9

08:45-18:39

1 stop22h 54m

S$ 1,661

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 11-9

07:21-09:40

2 stops37h 19m

Singapore Changi

Mon 14-9

21:00-20:44

2 stops36h 44m

S$ 1,738

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 11-9

06:25-12:35

3 stops41h 10m

Singapore Changi

Thu 17-9

02:00-15:15

2 stops50h 15m

S$ 1,766

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 15-9

15:19-11:55

2 stops31h 36m

Singapore Changi

Tue 22-9

15:20-15:38

3 stops37h 18m

S$ 1,937

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 22-9

15:19-11:55

2 stops31h 36m

Singapore Changi

Mon 28-9

15:20-12:40

3 stops34h 20m

S$ 2,116

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 8-10

14:40-12:45

3 stops33h 05m

Singapore Changi

Tue 20-10

07:00-20:00

3 stops26h 00m

S$ 2,450

Flights are sorted by cheapest return flights first.

Deals found on 2-8

Showing 1-10 of 17 resultsSorted by cheapest first
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Best time to book a flight from St. Louis to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from St. Louis with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Singapore

What is the cheapest month to book a flight from St. Louis to Singapore?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Singapore (average of S$ 1,327). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Singapore?

    Airlines like Air Canada and United Airlines fly from St. Louis to Singapore in about 32h 15m. The time it takes to get you to your destination can typically vary by up to 18m. The distance between St. Louis and Singapore is about 15310 km. This flight may include one or multiple stops.

  • Can I find deals for flights from St. Louis to Singapore that include hotel bookings?

    Yes. In addition to deals on St. Louis to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Singapore.

  • Can I find deals for business class flights from St. Louis to Singapore?

    Yes. Cheapflights offers flight deals from St. Louis to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Singapore?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Singapore (average of S$ 1,327). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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How does Cheapflights help users find flights from St. Louis to Singapore?

Cheapflights helps you search for flights from St. Louis to Singapore via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Singapore?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Singapore for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis to Singapore with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Singapore, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis to Singapore become cheaper?

Of course! You can now track prices for flights from St. Louis to Singapore and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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