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Cheap flights from St. Louis to Singapore from S$ 600

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 18-3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
27 Feb — 6 Mar1
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 28 January 2026.

Mon 20-412:11
STL
-
SIN
2 stops38h 29m
Cathay Pacific
Mon 4-518:00
SIN
-
STL
2 stops42h 59m
Cathay Pacific
Deal found 27-1S$ 1,319
Mon 20-412:11
STL
-
SIN
2 stops28h 19m
Cathay Pacific
Sun 3-520:05
SIN
-
STL
2 stops35h 22m
Cathay Pacific
Deal found 27-1S$ 1,383
Tue 21-412:11
STL
-
SIN
2 stops28h 19m
Cathay Pacific
Tue 5-501:45
SIN
-
STL
2 stops29h 42m
Cathay Pacific
Deal found 27-1S$ 1,416
Wed 22-418:11
STL
-
SIN
2 stops29h 14m
Cathay Pacific
Sun 3-520:05
SIN
-
STL
2 stops35h 22m
Cathay Pacific
Deal found 27-1S$ 1,420
Mon 20-419:05
STL
-
SIN
1 stop22h 40m
United Airlines
Tue 5-520:35
SIN
-
STL
2 stops33h 22m
United Airlines
Deal found 27-1S$ 1,427
Sun 19-406:20
STL
-
SIN
2 stops40h 25m
Cathay Pacific
Mon 4-513:25
SIN
-
STL
2 stops42h 02m
Cathay Pacific
Deal found 27-1S$ 1,432
Sun 19-408:30
STL
-
SIN
1 stop45h 05m
United Airlines
Wed 6-520:35
SIN
-
STL
1 stop22h 12m
United Airlines
Deal found 27-1S$ 1,438
Sun 19-408:30
STL
-
SIN
1 stop45h 05m
United Airlines
Mon 4-520:35
SIN
-
STL
2 stops24h 43m
United Airlines
Deal found 27-1S$ 1,444
Thu 26-209:37
STL
-
SIN
2 stops39h 18m
Qatar Airways
Thu 5-320:15
SIN
-
STL
2 stops38h 57m
Qatar Airways
Deal found 27-1S$ 1,453
Mon 20-407:00
STL
-
SIN
1 stop45h 35m
Multiple Airlines
Sat 2-507:20
SIN
-
STL
2 stops29h 39m
Multiple Airlines
Deal found 27-1S$ 1,471
Mon 20-412:11
STL
-
SIN
2 stops28h 19m
Cathay Pacific
Sat 2-507:20
SIN
-
STL
2 stops28h 44m
Cathay Pacific
Deal found 27-1S$ 1,477

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 28 January 2026.

Round-trip from

S$ 1,319

One-way from

S$ 600

Popular in

December

Cheapest in

January

Average price

S$ 1,448
Cathay Pacific
  • Cathay Pacific
  • 20-4-4-5
  • 4 total stops
  • 81h 28m total
  • St. Louis to Singapore
Search Deals
18-3
  • 18-3
  • 3 total stops
  • 39h 13m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (S$ 26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (S$ 82 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 28 January 2026.
Use the filters below to find and compare flights from St. Louis to Singapore that are best for you.

Fly from

St. Louis

Fly to

Singapore

Route

Depart

Return

Price

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 20-4

12:11-15:40

2 stops38h 29m

Singapore Changi

Mon 4-5

18:00-23:59

2 stops42h 59m

S$ 1,319

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 22-4

12:11-12:25

2 stops35h 14m

Singapore Changi

Tue 5-5

13:25-18:27

2 stops42h 02m

S$ 1,420

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 22-4

08:30-06:45

1 stop33h 15m

Singapore Changi

Mon 4-5

09:00-18:22

1 stop22h 22m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 22-4

08:30-06:45

1 stop33h 15m

Singapore Changi

Tue 5-5

09:00-18:22

1 stop22h 22m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 20-4

08:30-06:45

1 stop33h 15m

Singapore Changi

Wed 6-5

20:35-16:57

2 stops33h 22m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 20-4

19:05-06:45

1 stop22h 40m

Singapore Changi

Tue 5-5

20:35-16:57

2 stops33h 22m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 21-4

08:30-06:45

1 stop33h 15m

Singapore Changi

Wed 6-5

20:35-05:47

1 stop22h 12m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 20-4

19:05-06:45

1 stop22h 40m

Singapore Changi

Mon 4-5

20:35-05:47

1 stop22h 12m

S$ 1,427

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 18-3

20:12-00:25

3 stops39h 13m

S$ 600

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 18-3

06:51-20:15

1 stop24h 24m

S$ 808

Flights are sorted by cheapest return flights first.

Deals found on 26-1

Showing 1-10 of 17 results
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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 Cathay Pacific and 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 5h 14m. 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.

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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