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$492+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,103
(Expedia)

One-way from

$492
(Cathay Pacific)

Popular in

December

Cheapest in

January

Average price

$1,144
Provider with most accurate pricing for Lambert-St Louis-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Singapore Changi flights.
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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. 0% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:00 am
STL
-
SIN
2 stops49h 30m
Multiple Airlines
Sun 4/1910:50 pm
SIN
-
STL
2 stops38h 09m
Multiple Airlines
Deal found 1/14$1,103
This Air Canada deal was found by Cheapflights users on 1/13. 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.
Sat 3/74:05 pm
STL
-
SIN
2 stops48h 55m
Air Canada
Tue 3/178:50 am
SIN
-
STL
2 stops43h 39m
Air Canada
Deal found 1/13$1,107
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Thu 3/56:51 am
STL
-
SIN
1 stop23h 24m
United Airlines
Mon 3/1610:10 am
SIN
-
STL
1 stop25h 15m
United Airlines
Deal found 1/13$1,126
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/71:40 pm
STL
-
SIN
2 stops26h 55m
American Airlines
Sun 2/228:15 am
SIN
-
STL
2 stops25h 14m
American Airlines
Deal found 1/13$1,129
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Mon 3/95:15 am
STL
-
SIN
2 stops26h 00m
United Airlines
Mon 3/1610:10 am
SIN
-
STL
2 stops23h 31m
United Airlines
Deal found 1/13$1,130
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:00 am
STL
-
SIN
2 stops28h 50m
American Airlines
Sun 2/228:15 am
SIN
-
STL
2 stops25h 14m
American Airlines
Deal found 1/13$1,132
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Thu 3/56:51 am
STL
-
SIN
1 stop23h 24m
United Airlines
Tue 3/1710:20 pm
SIN
-
STL
1 stop37h 05m
United Airlines
Deal found 1/13$1,136
This Delta deal was found by Cheapflights users on 1/13. 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.
Thu 3/56:35 am
STL
-
SIN
2 stops27h 35m
Delta
Mon 3/161:35 am
SIN
-
STL
2 stops35h 23m
Delta
Deal found 1/13$1,140
This oojo deal was found by Cheapflights users on 1/13. 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.
Fri 1/1611:05 am
STL
-
SIN
2 stops28h 35m
Cathay Pacific
Sat 1/318:40 am
SIN
-
STL
2 stops49h 33m
Cathay Pacific
Deal found 1/13$1,142
This Delta deal was found by Cheapflights users on 1/13. 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.
Sun 3/86:59 pm
STL
-
SIN
2 stops40h 11m
Delta
Mon 3/161:35 am
SIN
-
STL
2 stops35h 23m
Delta
Deal found 1/13$1,146
This Delta deal was found by Cheapflights users on 1/13. 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.
Sun 3/85:25 pm
STL
-
SIN
2 stops41h 45m
Delta
Thu 3/1910:40 am
SIN
-
STL
2 stops35h 25m
Delta
Deal found 1/13$1,153
This Air Canada deal was found by Cheapflights users on 1/13. 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.
Sat 3/74:05 pm
STL
-
SIN
2 stops48h 55m
Air Canada
Thu 3/198:50 am
SIN
-
STL
2 stops43h 39m
Air Canada
Deal found 1/13$1,168

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 January 15, 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

Thu 4/2

7:00 am-9:30 pm

2 stops49h 30m

Singapore Changi

Sun 4/19

10:50 pm-11:59 pm

2 stops38h 09m

$1,103

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/5

6:51 am-8:15 pm

1 stop23h 24m

Singapore Changi

Wed 3/18

10:10 am-10:25 pm

1 stop25h 15m

$1,126

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/5

6:51 am-8:15 pm

1 stop23h 24m

Singapore Changi

Mon 3/16

10:10 am-10:25 pm

1 stop25h 15m

$1,126

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

5:15 am-8:15 pm

2 stops26h 00m

Singapore Changi

Tue 3/17

10:20 pm-10:36 am

2 stops25h 16m

$1,130

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/5

6:51 am-8:15 pm

1 stop23h 24m

Singapore Changi

Thu 3/19

10:10 am-11:34 pm

2 stops26h 24m

$1,130

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

5:15 am-8:15 pm

2 stops26h 00m

Singapore Changi

Thu 3/19

10:10 am-8:41 pm

2 stops23h 31m

$1,130

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/5

6:35 am-5:00 am

2 stops32h 25m

Singapore Changi

Sun 3/15

1:35 am-11:58 pm

2 stops35h 23m

$1,140

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/5

6:35 am-12:10 am

2 stops27h 35m

Singapore Changi

Mon 3/16

1:35 am-11:58 pm

2 stops35h 23m

$1,140

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

7:15 am-5:00 am

2 stops32h 45m

Singapore Changi

Sun 3/15

10:30 pm-11:58 pm

2 stops38h 28m

$1,140

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 4/2

9:37 am-5:30 am

2 stops30h 53m

$492

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 12 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
No data available for this route at this time. Please check back soon.

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 January 15, 2026.
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
9,164 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,164 reviews
United Airlines
7.4
Good
9,164 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.

  • How long is the flight from St. Louis to Singapore?

    Airlines like United Airlines fly from St. Louis to Singapore in about 23h 24m. 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 9513 mi.

  • 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.

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

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,474FlexibilityNo cancel feeOn-time69%

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