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Cheap flights from St. Louis to Singapore from S$ 693

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 12-2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
11 Jan — 18 Jan1
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 12 December 2025.

Wed 17-1209:00STL - SIN
2 stops56h 00mAir Canada
Tue 23-1208:50SIN - STL
2 stops44h 39mAir Canada
Deal found 11-12S$ 2,174
Wed 17-1213:35STL - SIN
2 stops51h 25mAir Canada
Sun 21-1208:50SIN - STL
2 stops26h 53mAir Canada
Deal found 11-12S$ 2,274
Wed 17-1208:30STL - SIN
2 stops32h 25mUnited Airlines
Tue 23-1210:10SIN - STL
1 stop26h 20mUnited Airlines
Deal found 11-12S$ 2,473
Wed 17-1208:30STL - SIN
2 stops32h 25mUnited Airlines
Mon 22-1222:20SIN - STL
1 stop38h 10mUnited Airlines
Deal found 11-12S$ 2,490
Wed 17-1208:30STL - SIN
2 stops32h 25mUnited Airlines
Sun 21-1210:10SIN - STL
2 stops25h 45mUnited Airlines
Deal found 11-12S$ 2,543
Wed 17-1208:30STL - SIN
2 stops32h 25mUnited Airlines
Fri 19-1222:20SIN - STL
1 stop38h 10mUnited Airlines
Deal found 11-12S$ 2,556

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 12 December 2025.

Round-trip from

S$ 1,297

One-way from

S$ 693

Popular in

December

Cheapest in

January

Average price

S$ 2,473
Cathay Pacific
  • Cathay Pacific
  • 20-1-27-1
  • 4 total stops
  • 73h 49m total
  • St. Louis to Singapore
Search Deals
12-2
  • 12-2
  • 2 total stops
  • 65h 08m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (S$ 42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (S$ 84 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 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

Sun 25-1

18:44-15:45

2 stops55h 01m

Singapore Changi

Sun 1-2

14:05-18:14

2 stops42h 09m

S$ 1,304

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 16-1

11:05-05:40

2 stops28h 35m

Singapore Changi

Sat 31-1

14:05-23:59

2 stops23h 54m

S$ 1,435

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 16-1

11:05-06:35

2 stops29h 30m

Singapore Changi

Sat 31-1

08:15-19:51

2 stops25h 36m

S$ 1,458

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 20-1

17:00-08:00

1 stop25h 00m

Singapore Changi

Tue 27-1

10:10-21:13

2 stops25h 03m

S$ 1,459

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 15-2

10:04-20:10

2 stops44h 06m

Singapore Changi

Thu 19-2

20:15-23:48

2 stops41h 33m

S$ 1,485

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 25-1

17:00-08:00

1 stop25h 00m

Singapore Changi

Sun 1-2

22:20-05:11

1 stop20h 51m

S$ 1,584

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 8-1

08:30-08:00

2 stops33h 30m

Singapore Changi

Thu 15-1

22:20-05:11

1 stop20h 51m

S$ 1,584

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 12-2

14:47-21:55

2 stops65h 08m

S$ 693

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 28-12

08:05-20:15

2 stops46h 10m

S$ 1,246

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 28-12

07:00-05:00

2 stops32h 00m

S$ 1,493

Flights are sorted by cheapest return flights first.

Deals found on 10-12

Showing 1-10 of 13 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, American Airlines, and United Airlines fly from St. Louis to Singapore in about 25h. The time it takes to get you to your destination can typically vary by up to 30h 01m. 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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