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$871+ Cheap flights from St. Louis (STL) to Singapore

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 12/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from St. Louis to Singapore

Keep the following information in mind while searching for St. Louis to Singapore flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$988
(lastminute.com)

One-way from

$871
(CheapTickets)

Popular in

December

Cheapest in

November

Average price

$1,413
From Lambert-St Louis to Singapore
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One-way flight from Lambert-St Louis to Singapore
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Highest demand for flights based on searches. 4% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Singapore

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 agosto 14, 2025.

This lastminute.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/43:59 pmSTL - SIN
2 stops34h 06mCathay Pacific
mié. 9/178:05 pmSIN - STL
2 stops36h 05mCathay Pacific
Deal found 8/13$988
This Air Canada deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/44:05 pmSTL - SIN
2 stops50h 00mAir Canada
sáb. 10/119:10 amSIN - STL
2 stops43h 08mAir Canada
Deal found 8/13$1,043
This oojo deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/273:59 pmSTL - SIN
2 stops30h 46mCathay Pacific
sáb. 10/48:00 amSIN - STL
2 stops27h 50mCathay Pacific
Deal found 8/13$1,082
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/411:30 amSTL - SIN
2 stops29h 45mUnited Airlines
mié. 9/178:45 amSIN - STL
1 stop21h 08mUnited Airlines
Deal found 8/13$1,086
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/105:49 pmSTL - SIN
1 stop23h 26mUnited Airlines
mié. 9/178:45 amSIN - STL
1 stop21h 08mUnited Airlines
Deal found 8/13$1,095
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/41:21 pmSTL - SIN
2 stops45h 19mDelta
mar. 9/161:10 amSIN - STL
2 stops34h 59mDelta
Deal found 8/13$1,109
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/45:15 amSTL - SIN
2 stops24h 10mUnited Airlines
sáb. 10/118:45 amSIN - STL
1 stop21h 09mUnited Airlines
Deal found 8/13$1,195
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/278:25 amSTL - SIN
2 stops32h 50mUnited Airlines
sáb. 10/48:45 amSIN - STL
1 stop21h 09mUnited Airlines
Deal found 8/13$1,199
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/115:28 pmSTL - SIN
2 stops35h 57mUnited Airlines
mar. 10/148:40 pmSIN - STL
2 stops27h 09mUnited Airlines
Deal found 8/13$1,370
This Ovago deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/43:59 pmSTL - SIN
2 stops31h 26mCathay Pacific
vie. 10/101:50 amSIN - STL
2 stops30h 33mCathay Pacific
Deal found 8/13$1,404
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/43:57 pmSTL - SIN
1 stop36h 38mMultiple Airlines
sáb. 10/119:00 amSIN - STL
1 stop28h 03mMultiple Airlines
Deal found 8/13$1,538

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated agosto 14, 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

jue. 9/4

3:59 pm-3:05 pm

2 stops34h 06m

Singapore Changi

mié. 9/17

8:05 pm-7:10 pm

2 stops36h 05m

$988

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

sáb. 10/4

4:05 pm-7:05 am

2 stops50h 00m

Singapore Changi

sáb. 10/11

9:10 am-3:18 pm

2 stops43h 08m

$1,043

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

mar. 1/13

5:54 pm-3:45 pm

2 stops31h 51m

Singapore Changi

mar. 1/27

10:00 am-10:27 pm

2 stops26h 27m

$1,069

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

jue. 1/1

11:14 am-5:40 am

2 stops28h 26m

Singapore Changi

mar. 1/20

10:00 am-10:27 pm

2 stops26h 27m

$1,070

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

mar. 1/13

3:36 pm-6:40 am

2 stops25h 04m

Singapore Changi

lun. 1/26

2:20 am-11:08 am

2 stops22h 48m

$1,082

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

lun. 1/12

3:36 pm-6:40 am

2 stops25h 04m

Singapore Changi

lun. 1/19

10:25 pm-11:08 am

2 stops26h 43m

$1,082

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

sáb. 9/27

3:59 pm-11:45 am

2 stops30h 46m

Singapore Changi

sáb. 10/4

8:00 am-10:50 pm

2 stops27h 50m

$1,082

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

lun. 12/22

7:00 am-1:05 pm

2 stops40h 05m

$871

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

vie. 12/19

6:30 am-12:25 am

2 stops27h 55m

$1,272

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

vie. 12/19

4:10 pm-2:55 pm

2 stops56h 45m

$1,300

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 11 results
1
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 round-trip 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.

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 $991). Flying from St. Louis to Singapore in December is currently the most expensive (average of $1,684). 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.

What is the cheapest time of day to fly from STL to SG?

Find hourly flight availability from St. Louis to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

When flying from St. Louis to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated agosto 14, 2025.
Read through reviews of airlines operating flights from St. Louis to Singapore, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What airport do you fly from for flights from St. Louis to Singapore?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Singapore. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • 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 vacation 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 $991). Flying from St. Louis to Singapore in December is currently the most expensive (average of $1,684). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Singapore

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Top airline flying from St. Louis to Singapore

Discover the top airline that operate flights from St. Louis to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$940Average$1,440FlexibilityNo cancel feeOn-time69%

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