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$462+ Cheap flights from St. Louis (STL) to Singapore (SIN)

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$994
(oojo)

One-way from

$462
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,308
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 Changi
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One-way flight from Lambert-St Louis to Singapore Changi
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Highest demand for flights based on searches. 6% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This oojo deal was found by Cheapflights users on 11/12. 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.
Tue 11/186:00 amSTL - SIN
2 stops33h 40mCathay Pacific
Tue 11/258:15 pmSIN - STL
2 stops40h 19mCathay Pacific
Deal found 11/12$1,198
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Tue 11/185:29 pmSTL - SIN
1 stop24h 31mUnited Airlines
Tue 11/2510:20 pmSIN - STL
2 stops26h 19mUnited Airlines
Deal found 11/12$1,320
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:05 pmSTL - SIN
3 stops32h 55mMultiple Airlines
Tue 11/258:50 amSIN - STL
2 stops44h 39mMultiple Airlines
Deal found 11/12$1,692
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Wed 12/2410:30 amSTL - SIN
2 stops31h 30mUnited Airlines
Thu 1/810:10 amSIN - STL
1 stop33h 01mUnited Airlines
Deal found 11/13$2,106
This Flightnetwork deal was found by Cheapflights users on 11/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:45 pmSTL - SIN
2 stops50h 15mAir Canada
Fri 1/98:50 amSIN - STL
2 stops42h 26mAir Canada
Deal found 11/13$2,154
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Wed 12/2410:30 amSTL - SIN
2 stops31h 30mUnited Airlines
Sat 1/1010:20 pmSIN - STL
2 stops25h 02mUnited Airlines
Deal found 11/13$2,156
This oojo deal was found by Cheapflights users on 11/12. 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.
Thu 11/137:58 pmSTL - SIN
2 stops53h 47mCathay Pacific
Wed 11/197:40 amSIN - STL
2 stops23h 07mCathay Pacific
Deal found 11/12$2,427
This Kiwi.com deal was found by Cheapflights users on 11/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:26 pmSTL - SIN
1 stop34h 19mMultiple Airlines
Fri 1/98:30 amSIN - STL
2 stops26h 51mMultiple Airlines
Deal found 11/13$2,445
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Tue 12/235:45 pmSTL - SIN
2 stops36h 30mUnited Airlines
Thu 1/810:20 pmSIN - STL
1 stop20h 51mUnited Airlines
Deal found 11/13$2,459

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 November 13, 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

Wed 1/14

6:00 am-4:50 pm

2 stops44h 50m

Singapore Changi

Mon 2/2

6:00 pm-11:59 pm

2 stops43h 59m

$994

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 4/2

6:30 am-5:30 am

2 stops34h 00m

Singapore Changi

Mon 4/13

6:00 pm-11:16 pm

2 stops42h 16m

$994

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 2/2

7:04 am-5:40 am

2 stops32h 36m

Singapore Changi

Sun 2/8

1:25 am-9:15 pm

2 stops33h 50m

$994

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 5/4

6:30 am-12:50 am

2 stops29h 20m

Singapore Changi

Thu 5/7

1:50 am-11:16 pm

2 stops34h 26m

$1,044

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

7:04 am-4:50 pm

2 stops43h 46m

Singapore Changi

Sat 1/31

2:05 pm-11:59 pm

2 stops23h 54m

$1,094

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 2/28

7:43 pm-9:35 am

3 stops47h 52m

$462

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 3/11

7:00 am-9:35 am

2 stops37h 35m

$484

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 12/15

7:43 pm-12:10 am

3 stops38h 27m

$741

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

6:00 am-8:00 am

2 stops36h 00m

$1,024

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 12/16

7:00 am-11:00 am

3 stops38h 00m

$1,174

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Compare providers for flights from St. Louis to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Singapore in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Singapore flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Singapore flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Singapore flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 time of day to fly from STL to SIN?

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 November 13, 2025.

When flying from St. Louis to Singapore, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 9% versus a flight at noon.

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 November 13, 2025.
See what other customers who have flown with United Airlines from St. Louis to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 44h 50m. 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.

  • What is the cheapest airline to fly from St. Louis to Singapore round-trip?

    Cheapflights users have booked flights from St. Louis to Singapore round-trip from $1,094. United Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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

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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.
Kansas City to Singapore flights
Springfield to Singapore flights

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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,439FlexibilityNo cancel feeOn-time69%

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