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$1,145+ Cheap flights from St. Louis (STL) to Singapore

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap 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 March 24, 2026.

This flugladen.de deal was found by Cheapflights users on 3/23. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:27 pm
STL
-
SIN
2 stops31h 23m
Qatar Airways
Wed 5/133:15 am
SIN
-
STL
2 stops33h 41m
Qatar Airways
Deal found 3/23$1,145
This flugladen.de deal was found by Cheapflights users on 3/21. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:30 pm
STL
-
SIN
2 stops27h 20m
Qatar Airways
Mon 5/113:15 am
SIN
-
STL
2 stops29h 18m
Qatar Airways
Deal found 3/21$1,149
This FlightHub deal was found by Cheapflights users on 3/22. 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.
Tue 9/18:35 am
STL
-
SIN
2 stops35h 15m
Qatar Airways
Mon 9/73:15 am
SIN
-
STL
2 stops33h 36m
Qatar Airways
Deal found 3/22$1,150
This oojo deal was found by Cheapflights users on 3/23. 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.
Wed 4/158:03 pm
STL
-
SIN
2 stops47h 47m
Qatar Airways
Fri 4/247:40 pm
SIN
-
STL
2 stops41h 19m
Qatar Airways
Deal found 3/23$1,168
This oojo deal was found by Cheapflights users on 3/22. 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.
Wed 5/64:30 pm
STL
-
SIN
2 stops27h 20m
Qatar Airways
Tue 5/123:15 am
SIN
-
STL
2 stops33h 39m
Qatar Airways
Deal found 3/22$1,170
This oojo deal was found by Cheapflights users on 3/23. 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 9/37:32 pm
STL
-
SIN
2 stops48h 18m
Qatar Airways
Mon 9/77:40 pm
SIN
-
STL
2 stops41h 19m
Qatar Airways
Deal found 3/23$1,175
This BusinessClass deal was found by Cheapflights users on 3/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:00 am
STL
-
SIN
2 stops36h 50m
Qatar Airways
Fri 4/107:40 pm
SIN
-
STL
2 stops39h 37m
Qatar Airways
Deal found 3/22$1,186
This Justfly.com deal was found by Cheapflights users on 3/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:37 pm
STL
-
SIN
2 stops30h 13m
Qatar Airways
Fri 9/113:15 am
SIN
-
STL
2 stops33h 05m
Qatar Airways
Deal found 3/22$1,189
This Qatar Airways deal was found by Cheapflights users on 3/23. 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.
Thu 9/109:46 am
STL
-
SIN
2 stops40h 59m
Qatar Airways
Mon 9/147:40 pm
SIN
-
STL
2 stops37h 23m
Qatar Airways
Deal found 3/23$1,197
This Qatar Airways deal was found by Cheapflights users on 3/19. 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.
Sun 9/134:29 pm
STL
-
SIN
2 stops27h 21m
Qatar Airways
Thu 9/177:40 pm
SIN
-
STL
2 stops37h 23m
Qatar Airways
Deal found 3/19$1,198
This oojo deal was found by Cheapflights users on 3/22. 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 4/57:00 am
STL
-
SIN
2 stops36h 50m
Qatar Airways
Sat 4/1110:20 am
SIN
-
STL
2 stops48h 57m
Qatar Airways
Deal found 3/22$1,203
This oojo deal was found by Cheapflights users on 3/21. 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 5/32:33 pm
STL
-
SIN
2 stops29h 17m
Qatar Airways
Sat 5/93:15 am
SIN
-
STL
2 stops32h 04m
Qatar Airways
Deal found 3/21$1,205

Find 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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,145
(flugladen.de)

Popular in

February

Cheapest in

January

Average price

$1,525
Provider with most accurate pricing for Lambert-St Louis-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Singapore Changi flights.
Search Deals
From Lambert-St Louis to Singapore
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($95 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 24, 2026.
Use the filters below to find and compare flights from St. Louis to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/10

9:46 am-3:45 pm

2 stops40h 59m

Singapore Changi

Mon 9/14

7:40 pm-8:03 pm

2 stops37h 23m

$1,197

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 9/13

4:29 pm-8:50 am

2 stops27h 21m

Singapore Changi

Thu 9/17

7:40 pm-8:03 pm

2 stops37h 23m

$1,198

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9/1

8:52 am-6:15 am

1 stop32h 23m

Singapore Changi

Tue 9/8

8:45 am-6:24 pm

1 stop22h 39m

$1,326
Quickest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 5/3

7:06 pm-6:45 am

1 stop22h 39m

Singapore Changi

Sun 5/10

8:35 pm-5:47 am

1 stop22h 12m

$1,426

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 5/3

4:30 pm-3:45 pm

2 stops34h 15m

Singapore Changi

Sun 5/10

9:30 pm-8:25 pm

3 stops35h 55m

$1,525

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 9/13

8:52 am-6:35 pm

1 stop44h 43m

Singapore Changi

Thu 9/17

8:45 am-6:24 pm

1 stop22h 39m

$1,529

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 7/14

7:56 pm-3:45 pm

2 stops54h 49m

Singapore Changi

Tue 7/28

7:40 pm-11:58 pm

2 stops41h 18m

$1,552

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 5/15

8:30 pm-6:35 pm

2 stops33h 05m

Singapore Changi

Fri 5/22

8:45 am-6:17 pm

1 stop22h 32m

$1,622

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/10

11:25 am-6:15 am

2 stops29h 50m

Singapore Changi

Mon 9/14

8:45 am-6:24 pm

1 stop22h 39m

$1,622

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 4/3

8:15 pm-6:35 pm

2 stops33h 20m

Singapore Changi

Wed 4/8

9:00 am-8:25 am

2 stops36h 25m

$1,726

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 12 resultsSorted by cheapest first
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 March 24, 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
9,469 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

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
9,469 reviews
United Airlines
7.4
Good
9,469 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

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 Qatar Airways and United Airlines fly from St. Louis to Singapore in about 32h 23m. The time it takes to get you to your destination can typically vary by up to 8h 36m. 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,474FlexibilityNo cancel feeOn-time69%

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