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$1,092+ Cheap flights from St. Louis (STL) to Singapore (SIN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
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 February 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,092
(United Airlines)

Popular in

August

Cheapest in

November

Average price

$1,432
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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Highest demand for flights based on searches. 1% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 4, 2025.

This United Airlines deal was found by Cheapflights users on 2/2. 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 4/285:54 pmSTL - SIN
1 stop23h 51mUnited Airlines
Mon 5/59:00 amSIN - STL
1 stop26h 45mUnited Airlines
Deal found 2/2$1,092
This Delta deal was found by Cheapflights users on 2/3. 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 3/206:00 amSTL - SIN
2 stops34h 00mDelta
Thu 3/2711:00 amSIN - STL
2 stops38h 00mDelta
Deal found 2/3$1,111
This Air Canada deal was found by Cheapflights users on 2/4. 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 5/241:30 pmSTL - SIN
2 stops52h 35mAir Canada
Sun 6/19:10 amSIN - STL
2 stops47h 51mAir Canada
Deal found 2/4$1,175
This FlightHub deal was found by Cheapflights users on 2/2. 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.
Wed 4/3010:17 amSTL - SIN
2 stops33h 43mQatar Airways
Tue 5/62:15 amSIN - STL
2 stops34h 26mQatar Airways
Deal found 2/2$1,234
This SmartFares deal was found by Cheapflights users on 2/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/216:15 amSTL - SIN
2 stops34h 25mCathay Pacific
Tue 4/291:45 amSIN - STL
2 stops34h 31mCathay Pacific
Deal found 2/3$1,480
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Thu 3/201:00 pmSTL - SIN
3 stops30h 45mMultiple Airlines
Thu 3/2710:00 amSIN - STL
2 stops42h 06mMultiple Airlines
Deal found 2/3$1,571
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/243:30 pmSTL - SIN
2 stops35h 00mKLM
Sat 5/3112:40 amSIN - STL
2 stops29h 05mKLM
Deal found 2/4$1,863
This AranGrant deal was found by Cheapflights users on 2/3. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:30 amSTL - SIN
2 stops33h 40mJapan Airlines
Tue 9/239:50 pmSIN - STL
2 stops28h 08mJapan Airlines
Deal found 2/3$1,926
This Emirates deal was found by Cheapflights users on 2/3. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/33:32 pmSTL - SIN
2 stops33h 08mEmirates
Sun 3/92:30 amSIN - STL
2 stops32h 37mEmirates
Deal found 2/3$2,311
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 2/143:45 pmSTL - SIN
1 stop35h 05mLufthansa
Sat 2/2211:55 pmSIN - STL
1 stop28h 00mLufthansa
Deal found 2/3$2,390
This AranGrant deal was found by Cheapflights users on 2/3. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2111:35 amSTL - SIN
2 stops41h 50mFinnair
Wed 4/309:35 pmSIN - STL
2 stops37h 37mFinnair
Deal found 2/3$4,957
This oojo deal was found by Cheapflights users on 2/4. 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.
Sat 5/247:30 pmSTL - SIN
3 stops35h 55mBritish Airways
Sun 6/111:20 pmSIN - STL
2 stops33h 09mBritish Airways
Deal found 2/4$10,086

Find flights from St. Louis to Singapore within your budget

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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 4/28

5:54 pm-6:45 am

1 stop23h 51m

Singapore Changi

Wed 5/7

9:00 am-4:52 pm

1 stop20h 52m

$1,092

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/20

6:00 am-5:00 am

2 stops34h 00m

Singapore Changi

Thu 3/27

11:00 am-12:00 pm

2 stops38h 00m

$1,111

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 4/30

10:17 am-9:00 am

2 stops33h 43m

Singapore Changi

Tue 5/6

2:15 am-11:41 pm

2 stops34h 26m

$1,234

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 2/7

3:50 pm-7:55 am

2 stops26h 05m

Singapore Changi

Fri 2/14

10:00 am-3:06 pm

2 stops43h 06m

$1,318

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 3/21

6:15 am-5:40 am

2 stops34h 25m

Singapore Changi

Tue 4/29

1:45 am-11:16 pm

2 stops34h 31m

$1,480

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 3/20

1:00 pm-8:45 am

3 stops30h 45m

Singapore Changi

Thu 3/27

10:00 am-3:06 pm

2 stops42h 06m

$1,571

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/3

3:32 pm-2:40 pm

2 stops33h 08m

Singapore Changi

Sun 3/9

2:30 am-10:07 pm

2 stops32h 37m

$2,311

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 2/14

3:45 pm-4:50 pm

1 stop35h 05m

Singapore Changi

Sat 2/22

11:55 pm-1:55 pm

1 stop28h 00m

$2,390

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 3/21

11:35 am-6:25 pm

2 stops41h 50m

Singapore Changi

Wed 4/30

9:35 pm-10:12 pm

2 stops37h 37m

$4,957

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 3/21

11:35 am-3:55 pm

2 stops39h 20m

Singapore Changi

Wed 4/30

11:20 pm-10:10 pm

2 stops35h 50m

$12,756

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Singapore flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from St. Louis to Singapore

Get recent, data-driven insights about flights from St. Louis to Singapore including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Singapore?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Singapore (average of $1,011). 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 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 February 4, 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 10% versus a flight at noon.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

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 February 4, 2025.
Get a feel of what it's like to fly with Emirates, Delta and Finnair from St. Louis to Singapore by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Emirates
8.1
Very good
3,307 reviews
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Delta
8.0
Very good
8,415 reviews
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Finnair
7.6
Good
1,284 reviews
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Qatar Airways
7.5
Good
3,711 reviews
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Cathay Pacific
7.5
Good
825 reviews
Emirates
8.1
Very good
3,307 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 are the cheapest airlines flying from St. Louis to Singapore round-trip?

    Cheapflights users have booked flights from St. Louis to Singapore round-trip from $1,092. Other airlines that can offer you cheap pricing are Delta, from $1,111, and Qatar Airways, from $1,234. United Airlines is 28% 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.

  • What is the cheapest month to book a flight from St. Louis to Singapore?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Singapore (average of $1,011). 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

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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 2 airlines flying from St. Louis to Singapore

Discover the top 2 airlines 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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,070Average$1,448FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$1,295Average$2,078FlexibilityNo cancel feeOn-time68%
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