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$500+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Dec 24 — Dec 311
Wed 12/24
Wed 12/31
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 November 24, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,048
(Cathay Pacific)

One-way from

$500
(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
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One-way flight from Lambert-St Louis to Singapore
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Highest demand for flights based on searches. 6% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($49 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 24, 2025.

This United Airlines deal was found by Cheapflights users on 11/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:30 pmSTL - SIN
1 stop24h 30mUnited Airlines
Sun 12/710:10 amSIN - STL
1 stop20h 17mUnited Airlines
Deal found 11/22$1,365
This Cathay Pacific deal was found by Cheapflights users on 11/22. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:00 amSTL - SIN
2 stops27h 25mMultiple Airlines
Sat 12/61:25 amSIN - STL
2 stops36h 32mMultiple Airlines
Deal found 11/22$1,487
This Malaysia Airlines deal was found by Cheapflights users on 11/22. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:00 amSTL - SIN
3 stops36h 05mMalaysia Airlines
Sat 12/61:10 amSIN - STL
2 stops37h 02mMalaysia Airlines
Deal found 11/22$3,595
This Orbitz deal was found by Cheapflights users on 11/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/274:05 pmSTL - SIN
2 stops66h 05mMultiple Airlines
Mon 1/58:10 pmSIN - STL
2 stops55h 44mMultiple Airlines
Deal found 11/23$6,791
This Travelocity deal was found by Cheapflights users on 11/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:00 amSTL - SIN
2 stops36h 35mMultiple Airlines
Wed 12/3112:40 amSIN - STL
2 stops53h 46mMultiple Airlines
Deal found 11/24$6,839
This United Airlines deal was found by Cheapflights users on 11/24. 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 12/219:00 amSTL - SIN
2 stops57h 00mUnited Airlines
Thu 1/110:10 amSIN - STL
1 stop20h 34mUnited Airlines
Deal found 11/24$7,599
This AranGrant deal was found by Cheapflights users on 11/22. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/213:50 pmSTL - SIN
1 stop35h 05mLufthansa
Thu 1/111:55 pmSIN - STL
1 stop28h 00mLufthansa
Deal found 11/22$8,258
This KAYAK deal was found by Cheapflights users on 11/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:08 amSTL - SIN
2 stops44h 07mCathay Pacific
Wed 12/311:25 amSIN - STL
2 stops28h 58mCathay Pacific
Deal found 11/22$8,782

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 24, 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

Thu 1/29

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Mon 2/2

6:00 pm-6:16 pm

2 stops38h 16m

$1,048

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 3/3

5:55 pm-11:55 am

2 stops28h 00m

Singapore Changi

Sun 3/15

7:40 am-5:57 pm

2 stops23h 17m

$1,050

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 2/10

7:04 am-5:40 am

2 stops32h 36m

Singapore Changi

Sun 3/1

8:15 pm-11:48 pm

2 stops41h 33m

$1,081

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Sat 1/31

2:05 pm-11:59 pm

2 stops23h 54m

$1,110

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Fri 1/30

1:25 am-11:59 pm

2 stops36h 34m

$1,117

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 2/14

10:04 am-5:40 am

2 stops29h 36m

Singapore Changi

Thu 2/26

1:25 am-11:48 pm

2 stops36h 23m

$1,117

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 3/8

11:57 am-9:35 am

3 stops56h 38m

$500

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 3/8

6:51 am-8:15 pm

1 stop24h 24m

$698

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

12:05 pm-2:30 pm

2 stops36h 25m

$1,218

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

6:35 pm-8:15 pm

2 stops35h 40m

$1,224

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

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 SG?

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 24, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Singapore in the evening. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking 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 24, 2025.
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
9,037 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

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
9,037 reviews
United Airlines
7.4
Good
9,037 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

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.

  • 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 Cathay Pacific fly from St. Louis to Singapore in about 28h 35m. 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

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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 November 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,439FlexibilityNo cancel feeOn-time69%

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