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$532+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
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 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,045
(American Airlines)

One-way from

$532
(Kiwi.com)

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 12, 2026.

This American Airlines deal was found by Cheapflights users on 1/12. 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.
Thu 2/267:00 am
STL
-
SIN
2 stops27h 50m
American Airlines
Wed 3/42:20 am
SIN
-
STL
2 stops25h 23m
American Airlines
Deal found 1/12$1,045
This United Airlines deal was found by Cheapflights users on 1/12. 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 2/268:41 am
STL
-
SIN
2 stops33h 19m
United Airlines
Thu 3/510:10 am
SIN
-
STL
1 stop26h 15m
United Airlines
Deal found 1/12$1,130
This oojo deal was found by Cheapflights users on 1/12. 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 stops34h 50m
Cathay Pacific
Sat 1/316:00 pm
SIN
-
STL
2 stops40h 13m
Cathay Pacific
Deal found 1/12$1,142
This oojo deal was found by Cheapflights users on 1/12. 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.
Sun 3/226:00 am
STL
-
SIN
2 stops34h 40m
Cathay Pacific
Sun 3/298:05 pm
SIN
-
STL
2 stops38h 06m
Cathay Pacific
Deal found 1/12$1,167
This FlightHub deal was found by Cheapflights users on 1/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:11 pm
STL
-
SIN
2 stops31h 39m
Qatar Airways
Thu 5/143:15 am
SIN
-
STL
2 stops31h 59m
Qatar Airways
Deal found 1/12$1,186
This Singapore Airlines deal was found by Cheapflights users on 1/12. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:00 am
STL
-
SIN
1 stop44h 45m
Multiple Airlines
Thu 3/59:00 am
SIN
-
STL
1 stop28h 59m
Multiple Airlines
Deal found 1/12$1,208
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Fri 5/18:30 am
STL
-
SIN
1 stop33h 15m
United Airlines
Fri 5/158:40 pm
SIN
-
STL
2 stops33h 15m
United Airlines
Deal found 1/12$1,226
This United Airlines deal was found by Cheapflights users on 1/11. 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.
Sun 2/82:45 pm
STL
-
SIN
2 stops27h 15m
United Airlines
Sun 2/1510:10 am
SIN
-
STL
2 stops24h 16m
United Airlines
Deal found 1/11$1,230
This Qatar Airways deal was found by Cheapflights users on 1/11. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:45 pm
STL
-
SIN
2 stops29h 05m
Qatar Airways
Sun 10/47:40 pm
SIN
-
STL
2 stops37h 28m
Qatar Airways
Deal found 1/11$1,237
This Booking.com deal was found by Cheapflights users on 1/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:30 am
STL
-
SIN
2 stops32h 45m
Air Canada
Sat 5/307:00 am
SIN
-
STL
2 stops42h 06m
Air Canada
Deal found 1/11$1,259
This Ovago deal was found by Cheapflights users on 1/11. 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.
Thu 5/211:27 pm
STL
-
SIN
2 stops27h 48m
ANA
Sat 5/308:45 am
SIN
-
STL
1 stop22h 08m
ANA
Deal found 1/11$1,276
This United Airlines deal was found by Cheapflights users on 1/11. 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.
Wed 9/307:06 pm
STL
-
SIN
1 stop22h 09m
United Airlines
Sun 10/411:05 am
SIN
-
STL
2 stops43h 48m
United Airlines
Deal found 1/11$1,326

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 12, 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 2/26

8:41 am-8:00 am

2 stops33h 19m

Singapore Changi

Thu 3/5

10:10 am-10:25 pm

1 stop26h 15m

$1,130

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 3/22

6:00 am-5:40 am

2 stops34h 40m

Singapore Changi

Sun 3/29

8:05 pm-9:11 pm

2 stops38h 06m

$1,167

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 5/1

12:11 pm-8:50 am

2 stops31h 39m

Singapore Changi

Thu 5/14

3:15 am-10:14 pm

2 stops31h 59m

$1,186

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 5/1

8:30 am-6:45 am

1 stop33h 15m

Singapore Changi

Fri 5/15

8:40 pm-5:47 am

1 stop22h 07m

$1,226

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 2/8

5:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Sun 2/15

10:10 am-4:44 pm

1 stop20h 34m

$1,226

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 3/20

5:15 am-8:15 pm

2 stops26h 00m

Singapore Changi

Fri 3/27

10:20 pm-10:36 am

2 stops25h 16m

$1,230

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 3/22

6:51 am-8:15 pm

1 stop24h 24m

Singapore Changi

Sun 3/29

8:40 pm-4:56 pm

2 stops33h 16m

$1,230

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 5/21

7:06 pm-6:35 pm

1 stop34h 29m

Singapore Changi

Sat 5/30

8:45 am-5:53 pm

1 stop22h 08m

$1,333

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 7/9

7:06 pm-6:15 am

1 stop22h 09m

Singapore Changi

Mon 7/27

8:45 am-2:18 pm

2 stops42h 33m

$1,430

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 7/9

9:13 am-6:15 am

2 stops32h 02m

Singapore Changi

Wed 7/22

8:40 pm-12:20 pm

2 stops28h 40m

$1,430

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

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 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 12, 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
9,143 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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
9,143 reviews
United Airlines
7.4
Good
9,143 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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, Cathay Pacific, and Qatar Airways fly from St. Louis to Singapore in about 31h 39m. The time it takes to get you to your destination can typically vary by up to 3h 01m. The distance between St. Louis and Singapore is about 9513 mi. 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 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,460FlexibilityNo cancel feeOn-time69%

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