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Cheap flights from St. Louis to Singapore from S$ 677

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 5-4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
13 Apr — 20 Apr1
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 14 March 2026.

Wed 22-406:21
STL
-
SIN
1 stop36h 19m
Multiple Airlines
Wed 29-420:45
SIN
-
STL
1 stop40h 12m
Multiple Airlines
Deal found 9-3S$ 1,429
Wed 14-1006:41
STL
-
SIN
2 stops33h 49m
Multiple Airlines
Wed 21-1007:20
SIN
-
STL
2 stops29h 39m
Multiple Airlines
Deal found 13-3S$ 1,434
Wed 22-416:30
STL
-
SIN
2 stops27h 20m
Qatar Airways
Wed 29-419:40
SIN
-
STL
2 stops39h 37m
Qatar Airways
Deal found 9-3S$ 1,492
Mon 27-418:11
STL
-
SIN
2 stops37h 39m
Cathay Pacific
Mon 4-516:05
SIN
-
STL
2 stops43h 54m
Cathay Pacific
Deal found 13-3S$ 1,497
Sun 26-412:27
STL
-
SIN
2 stops28h 03m
Cathay Pacific
Sun 3-509:45
SIN
-
STL
2 stops46h 48m
Cathay Pacific
Deal found 12-3S$ 1,533
Sat 25-416:30
STL
-
SIN
2 stops34h 15m
Qatar Airways
Sat 2-519:40
SIN
-
STL
2 stops39h 39m
Qatar Airways
Deal found 11-3S$ 1,606
Wed 13-508:30
STL
-
SIN
1 stop33h 15m
United Airlines
Mon 25-508:45
SIN
-
STL
1 stop22h 32m
United Airlines
Deal found 10-3S$ 1,634
Wed 13-508:30
STL
-
SIN
1 stop45h 05m
Multiple Airlines
Mon 25-508:45
SIN
-
STL
1 stop22h 32m
Multiple Airlines
Deal found 13-3S$ 1,657
Sun 20-909:46
STL
-
SIN
2 stops40h 59m
Qatar Airways
Tue 22-903:15
SIN
-
STL
2 stops29h 48m
Qatar Airways
Deal found 9-3S$ 1,728
Wed 14-1019:06
STL
-
SIN
1 stop22h 09m
United Airlines
Wed 21-1008:45
SIN
-
STL
1 stop22h 08m
United Airlines
Deal found 13-3S$ 1,735

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 14 March 2026.

Round-trip from

S$ 1,429

One-way from

S$ 677

Popular in

February

Cheapest in

January

Average price

S$ 1,953
22-4-29-4
  • 22-4-29-4
  • 2 total stops
  • 76h 31m total
  • St. Louis to Singapore
Search Deals
Cathay Pacific
  • Cathay Pacific
  • 5-4
  • 2 total stops
  • 36h 12m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (S$ 274 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (S$ 158 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 14 March 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 22-4

07:00-05:15

2 stops33h 15m

Singapore Changi

Wed 29-4

20:45-23:57

1 stop40h 12m

S$ 1,561

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 13-5

08:30-06:45

1 stop33h 15m

Singapore Changi

Mon 25-5

20:35-15:46

2 stops32h 11m

S$ 1,634

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 28-4

08:54-06:45

2 stops32h 51m

Singapore Changi

Tue 5-5

09:00-18:22

1 stop22h 22m

S$ 1,641

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 8-7

19:56-21:15

2 stops60h 19m

Singapore Changi

Wed 15-7

19:40-23:56

2 stops41h 16m

S$ 1,898

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 13-5

19:41-13:55

2 stops29h 14m

Singapore Changi

Mon 25-5

15:20-14:50

3 stops36h 30m

S$ 1,981

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 22-5

05:10-18:35

2 stops24h 25m

Singapore Changi

Wed 10-6

08:45-18:17

1 stop22h 32m

S$ 2,008
Fastest return journey

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 7-7

19:23-06:15

1 stop21h 52m

Singapore Changi

Wed 15-7

08:45-18:17

1 stop22h 32m

S$ 2,018

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 8-7

13:38-06:15

2 stops27h 37m

Singapore Changi

Mon 20-7

08:45-08:41

2 stops36h 56m

S$ 2,025

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 6-7

05:10-06:15

2 stops36h 05m

Singapore Changi

Thu 16-7

08:45-18:17

1 stop22h 32m

S$ 2,025
Cheapest one-way

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 5-4

10:33-11:45

2 stops36h 12m

S$ 677

Flights are sorted by cheapest return flights first.

Deals found on 10-3

Showing 1-10 of 20 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
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.

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 United Airlines fly from St. Louis to Singapore in about 33h 15m. The time it takes to get you to your destination can typically vary by up to . The distance between St. Louis and Singapore is about 15310 km.

  • 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.

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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