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Cheap flights from St. Louis to Singapore from S$ 655

STL — SIN
26 Nov — 3 Dec1
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 29-1007:02 -
2 stops39h 48m
Sun 1-1101:25 -
2 stops36h 34m
Deal found 26-10S$ 1,548
Sun 1-1106:00 -
2 stops49h 55m
Mon 9-1108:15 -
2 stops29h 44m
Deal found 25-10S$ 1,568
Thu 5-1106:00 -
2 stops39h 50m
Sun 8-1101:25 -
2 stops36h 34m
Deal found 21-10S$ 1,592
Wed 18-1106:00 -
2 stops39h 50m
Wed 25-1107:30 -
2 stops30h 29m
Deal found 22-10S$ 1,606
Sat 24-1016:42 -
2 stops41h 58m
Wed 4-1123:10 -
2 stops38h 49m
Deal found 23-10S$ 1,625
Thu 22-1005:10 -
2 stops35h 05m
Thu 29-1008:40 -
2 stops37h 15m
Deal found 21-10S$ 1,642
Fri 30-1016:42 -
2 stops28h 43m
Thu 5-1103:15 -
2 stops34h 44m
Deal found 26-10S$ 1,667
Wed 9-1207:27 -
2 stops27h 23m
Wed 16-1208:15 -
2 stops26h 25m
Deal found 24-10S$ 1,696
Wed 28-1013:30 -
2 stops30h 15m
Wed 4-1120:15 -
2 stops40h 00m
Deal found 26-10S$ 1,720
Thu 10-1205:50 -
2 stops29h 00m
Wed 16-1202:20 -
2 stops25h 00m
Deal found 26-10S$ 1,744
Wed 18-1111:00 -
2 stops31h 00m
Wed 25-1110:10 -
1 stop26h 05m
Deal found 22-10S$ 1,761

Find flight deals from St. Louis to Singapore

Round-trip from

S$ 1,499

One-way from

S$ 655

Popular in

February

Cheapest in

October

Average price

S$ 1,324
Cathay Pacific
  • Cathay Pacific
  • 26-1-2-2
  • 4 total stops
  • 52h 07m total
  • St. Louis to Singapore
Search Deals
15-4-31-12
  • 15-4-31-12
  • 2 total stops
  • 42h 46m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (S$ 778 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (S$ 193 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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

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Route

Depart

Return

Price

Cheapest return flight

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 16-3

05:06-05:40

2 stops35h 34m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 741
Fastest return journey

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 9-2

06:01-00:20

2 stops28h 19m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 741

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Thu 15-4

07:00-12:20

3 stops40h 20m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 841

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Tue 9-2

08:30-20:15

1 stop45h 45m

Singapore Changi

Wed 31-12

00:00-10:30

Nonstop0h 00m

S$ 1,076

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Thu 5-11

06:00-05:40

2 stops33h 40m

Singapore Changi

Mon 9-11

20:20-20:19

2 stops37h 59m

S$ 1,592

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Wed 18-11

08:30-08:00

2 stops33h 30m

Singapore Changi

Wed 25-11

10:10-18:05

1 stop21h 55m

S$ 1,761

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sat 6-3

19:04-20:15

2 stops35h 11m

Singapore Changi

Mon 15-3

10:10-21:55

1 stop24h 45m

S$ 1,835

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Fri 20-11

15:20-05:00

2 stops47h 40m

Singapore Changi

Thu 26-11

01:40-14:22

2 stops50h 42m

S$ 1,914

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Thu 5-11

13:08-06:55

2 stops27h 47m

Singapore Changi

Mon 9-11

10:10-22:15

1 stop26h 05m

S$ 2,023

St. LouisSingapore

STL Lambert-St Louis - SIN Singapore Changi

STLSIN

Lambert-St Louis

Sat 6-3

08:40-13:05

2 stops38h 25m

Singapore Changi

Mon 15-3

14:25-12:20

3 stops34h 55m

S$ 2,036

Flights are sorted by cheapest return flights first.

Deals found on 22-10

Showing 1-10 of 13 resultsSorted by cheapest first
1
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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

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$ 1,324). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,961). 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.

How much does it cost for a return flight from St. Louis to Singapore?

Airfare is below average for this route at the moment.

St. Louis to Singapore flights typically cost between S$ 1,513 and S$ 1,577 in January.
The cheapest return price found within the last 5 days was S$ 1,499 on Cathay Pacific (26 Jan–2 Feb).

Related info for your journey

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

    Airlines like Cathay Pacific, United Airlines, and Alaska Airlines fly from St. Louis to Singapore in about 33h 30m. The time it takes to get you to your destination can typically vary by up to 14h 10m. 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$ 1,324). Flying from St. Louis to Singapore in February is currently the most expensive (average of S$ 3,961). 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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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.

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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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