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Cheap flights from St. Louis to Singapore from S$ 699

STL — SIN
10 Oct — 17 Oct1
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

Thu 22-1012:10 -
2 stops28h 05m
Thu 29-1008:40 -
2 stops43h 43m
Deal found 7-9S$ 1,394
Fri 20-1107:30 -
2 stops33h 30m
Tue 1-1208:40 -
2 stops44h 46m
Deal found 9-9S$ 1,454
Sun 25-1016:05 -
2 stops49h 50m
Sun 1-1108:40 -
2 stops44h 43m
Deal found 9-9S$ 1,471
Sun 1-1113:40 -
2 stops27h 20m
Sat 7-1108:40 -
2 stops44h 46m
Deal found 7-9S$ 1,503
Tue 29-911:01 -
2 stops29h 29m
Sun 4-1013:25 -
2 stops47h 34m
Deal found 10-9S$ 1,519
Mon 7-906:35 -
2 stops28h 45m
Sun 13-906:15 -
2 stops30h 44m
Deal found 6-9S$ 1,524
Sun 4-1007:27 -
2 stops43h 18m
Sun 11-1019:40 -
2 stops41h 19m
Deal found 9-9S$ 1,542
Thu 17-911:01 -
2 stops39h 04m
Mon 21-907:20 -
2 stops24h 18m
Deal found 9-9S$ 1,575
Sun 4-1011:01 -
2 stops43h 04m
Sun 11-1018:00 -
2 stops42h 59m
Deal found 6-9S$ 1,595
Thu 22-1007:08 -
1 stop22h 27m
Thu 29-1010:10 -
1 stop20h 55m
Deal found 7-9S$ 1,636

Find flight deals from St. Louis to Singapore

Round-trip from

S$ 1,394

One-way from

S$ 699

Popular in

February

Cheapest in

October

Average price

S$ 2,968
Air Canada
  • Air Canada
  • 22-10-29-10
  • 4 total stops
  • 71h 48m total
  • St. Louis to Singapore
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2-11-31-12
  • 2-11-31-12
  • 2 total stops
  • 48h 51m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (S$ 560 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (S$ 197 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 9-2

09:52-09:35

2 stops33h 43m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 706

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 6-10

07:02-15:45

2 stops43h 43m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 781
Fastest return journey

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 6-10

07:08-18:35

1 stop22h 27m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 900

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sun 4-10

07:27-15:45

2 stops43h 18m

Singapore Changi

Sun 11-10

19:40-23:59

2 stops41h 19m

S$ 1,542

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Thu 22-10

07:08-18:35

1 stop22h 27m

Singapore Changi

Thu 29-10

10:10-18:05

1 stop20h 55m

S$ 1,636

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sun 4-10

07:08-06:15

1 stop34h 07m

Singapore Changi

Sun 11-10

08:45-23:44

2 stops27h 59m

S$ 1,653

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Thu 22-10

16:42-12:30

2 stops30h 48m

Singapore Changi

Wed 28-10

02:00-22:50

3 stops57h 50m

S$ 1,780

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sun 4-10

07:02-12:30

2 stops40h 28m

Singapore Changi

Sat 10-10

02:00-14:45

3 stops49h 45m

S$ 2,075

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sun 1-11

16:00-13:05

3 stops31h 05m

Singapore Changi

Sat 7-11

14:25-00:15

2 stops47h 50m

S$ 2,076

Flights are sorted by cheapest return flights first.

Deals found on 10-9

Sorted by cheapest first

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

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$ 1,310). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,918). 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

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

    Airlines like Qatar Airways and United Airlines fly from St. Louis to Singapore in about 22h 27m. The time it takes to get you to your destination can typically vary by up to 20h 51m. 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$ 1,310). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,918). 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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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Singapore?

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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.

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