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Cheap flights from St. Louis to Singapore from S$ 546

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 9-1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 October 2025.

Round-trip from

S$ 1,424

One-way from

S$ 546

Popular in

December

Cheapest in

February
Cathay Pacific
  • Cathay Pacific
  • 16-1-30-1
  • 4 total stops
  • 75h 25m total
  • St. Louis to Singapore
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9-1
  • 9-1
  • 2 total stops
  • 56h 02m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (S$ 87 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (S$ 63 potential savings vs. average return price).
Search Deals

Find 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 October 2025.

Mon 3-1107:00STL - SIN
2 stops32h 40mCathay Pacific
Sun 9-1101:25SIN - STL
2 stops36h 31mCathay Pacific
Deal found 27-10S$ 1,294
Mon 27-1007:16STL - SIN
2 stops33h 24mCathay Pacific
Mon 3-1112:55SIN - STL
2 stops62h 10mCathay Pacific
Deal found 26-10S$ 1,302
Sun 23-1111:20STL - SIN
2 stops42h 55mUnited Airlines
Tue 2-1210:10SIN - STL
1 stop20h 17mUnited Airlines
Deal found 27-10S$ 1,464
Mon 8-1206:55STL - SIN
2 stops27h 30mCathay Pacific
Mon 15-1210:00SIN - STL
2 stops27h 57mCathay Pacific
Deal found 27-10S$ 1,537
Mon 24-1113:35STL - SIN
2 stops28h 25mUnited Airlines
Mon 1-1222:20SIN - STL
2 stops32h 08mUnited Airlines
Deal found 26-10S$ 1,589
Mon 27-1012:31STL - SIN
2 stops29h 29mUnited Airlines
Mon 3-1110:10SIN - STL
1 stop20h 17mUnited Airlines
Deal found 26-10S$ 1,712
Tue 9-1210:00STL - SIN
2 stops30h 55mUnited Airlines
Wed 31-1222:20SIN - STL
2 stops30h 06mUnited Airlines
Deal found 26-10S$ 1,785
Mon 8-1217:30STL - SIN
1 stop36h 45mUnited Airlines
Wed 31-1222:20SIN - STL
2 stops30h 06mUnited Airlines
Deal found 26-10S$ 1,896

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 October 2025.
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

Fri 16-1

07:04-11:55

2 stops38h 51m

Singapore Changi

Fri 30-1

01:25-23:59

2 stops36h 34m

S$ 1,424

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 8-3

06:15-11:55

2 stops40h 40m

Singapore Changi

Thu 12-3

07:40-17:57

2 stops23h 17m

S$ 1,425

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 20-2

18:50-13:05

2 stops28h 15m

Singapore Changi

Sat 28-2

20:15-18:03

2 stops35h 48m

S$ 1,463

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 23-11

11:20-20:15

2 stops42h 55m

Singapore Changi

Tue 2-12

10:10-16:27

1 stop20h 17m

S$ 1,464

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 24-11

08:20-08:00

2 stops33h 40m

Singapore Changi

Tue 2-12

10:10-16:27

1 stop20h 17m

S$ 1,464

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 8-12

06:55-00:25

2 stops27h 30m

Singapore Changi

Mon 15-12

10:00-23:57

2 stops27h 57m

S$ 1,537

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 9-1

19:43-17:45

2 stops56h 02m

S$ 546

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 31-12

19:43-17:45

2 stops56h 02m

S$ 748

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 31-12

06:41-20:15

1 stop23h 34m

S$ 1,102

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 28-12

09:08-11:55

2 stops36h 47m

S$ 1,231

Flights are sorted by cheapest return flights first.

Deals found on 26-10

Showing 1-10 of 12 results
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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.

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 fly from St. Louis to Singapore in about 38h 51m. 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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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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