Find flights
When to book
FAQs

Cheap flights from St. Louis to Singapore from S$ 748

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 6-10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
24 Aug — 31 Aug1
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 25 July 2026.

Mon 21-907:21
STL
-
SIN
2 stops43h 24m
Qatar Airways
Mon 28-903:15
SIN
-
STL
2 stops34h 12m
Qatar Airways
Deal found 22-7S$ 1,468
Mon 7-906:35
STL
-
SIN
2 stops44h 10m
Qatar Airways
Sun 13-903:15
SIN
-
STL
2 stops33h 44m
Qatar Airways
Deal found 24-7S$ 1,473
Tue 24-1115:15
STL
-
SIN
2 stops57h 40m
Multiple Airlines
Mon 14-1203:15
SIN
-
STL
2 stops34h 44m
Multiple Airlines
Deal found 25-7S$ 1,489
Tue 22-912:10
STL
-
SIN
2 stops28h 05m
Air Canada
Mon 28-908:10
SIN
-
STL
2 stops49h 10m
Air Canada
Deal found 21-7S$ 1,499
Wed 11-1106:00
STL
-
SIN
2 stops35h 00m
Multiple Airlines
Mon 30-1123:10
SIN
-
STL
2 stops54h 16m
Multiple Airlines
Deal found 24-7S$ 1,500
Mon 21-915:30
STL
-
SIN
1 stop26h 20m
Lufthansa
Tue 29-923:40
SIN
-
STL
2 stops29h 03m
Lufthansa
Deal found 22-7S$ 1,517
Tue 24-1113:08
STL
-
SIN
2 stops37h 57m
Lufthansa
Tue 15-1223:55
SIN
-
STL
2 stops37h 30m
Lufthansa
Deal found 22-7S$ 1,535
Fri 4-915:02
STL
-
SIN
2 stops59h 43m
Multiple Airlines
Thu 10-903:15
SIN
-
STL
2 stops33h 44m
Multiple Airlines
Deal found 21-7S$ 1,540
Wed 29-712:10
STL
-
SIN
2 stops52h 05m
Air Canada
Tue 4-807:00
SIN
-
STL
2 stops26h 24m
Air Canada
Deal found 21-7S$ 1,633

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 25 July 2026.

Round-trip from

S$ 1,468

One-way from

S$ 748

Popular in

February

Cheapest in

October

Average price

S$ 2,033
Qatar Airways
  • Qatar Airways
  • 21-9-28-9
  • 4 total stops
  • 77h 36m total
  • St. Louis to Singapore
Search Deals
Qatar Airways
  • Qatar Airways
  • 6-10
  • 2 total stops
  • 39h 14m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (S$ 465 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (S$ 135 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 25 July 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

Wed 11-11

08:25-13:05

3 stops38h 40m

Singapore Changi

Sun 29-11

02:00-11:55

2 stops47h 55m

S$ 1,898

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 10-12

13:08-17:05

2 stops37h 57m

Singapore Changi

Thu 24-12

23:55-23:22

2 stops37h 27m

S$ 2,072

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 4-9

14:20-12:35

3 stops33h 15m

Singapore Changi

Fri 11-9

13:55-11:40

2 stops34h 45m

S$ 2,401

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 7-9

08:42-06:15

1 stop32h 33m

Singapore Changi

Mon 14-9

08:45-18:39

1 stop22h 54m

S$ 2,441

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 20-8

08:42-06:15

1 stop32h 33m

Singapore Changi

Wed 26-8

08:45-18:39

1 stop22h 54m

S$ 2,697

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 22-9

15:13-06:15

2 stops26h 02m

Singapore Changi

Mon 28-9

08:45-18:43

1 stop22h 58m

S$ 2,702
Fastest return journey

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 18-10

07:08-18:35

1 stop22h 27m

Singapore Changi

Thu 22-10

08:45-18:43

1 stop22h 58m

S$ 2,762

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 26-9

07:08-18:35

1 stop22h 27m

Singapore Changi

Fri 2-10

08:45-18:43

1 stop22h 58m

S$ 2,826

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 22-12

08:05-00:55

2 stops26h 50m

Singapore Changi

Tue 29-12

22:20-05:19

1 stop20h 59m

S$ 2,843

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 22-12

06:04-13:05

2 stops41h 01m

Singapore Changi

Tue 29-12

14:25-14:00

3 stops37h 35m

S$ 2,948

Flights are sorted by cheapest return flights first.

Deals found on 21-7

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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$ 1,335). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,240). 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 Lufthansa and United Airlines fly from St. Louis to Singapore in about 32h 33m. The time it takes to get you to your destination can typically vary by up to 5h 24m. 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$ 1,335). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,240). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.