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$653+ 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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$1,100
(United Airlines)

One-way from

$653
(Gurufare)

Popular in

August

Cheapest in

September

Average price

$1,423
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 ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 1, 2025.

This United Airlines deal was found by Cheapflights users on 6/30. 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 12/14:43 pmSTL - SIN
2 stops25h 17mUnited Airlines
Tue 12/1610:20 pmSIN - STL
2 stops26h 07mUnited Airlines
Deal found 6/30$1,100
This Air Canada deal was found by Cheapflights users on 6/29. 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.
Thu 9/41:30 pmSTL - SIN
2 stops28h 35mAir Canada
Fri 9/128:10 amSIN - STL
2 stops48h 47mAir Canada
Deal found 6/29$1,101
This Gurufare deal was found by Cheapflights users on 6/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:20 amSTL - SIN
2 stops34h 50mJapan Airlines
Thu 9/111:55 amSIN - STL
2 stops24h 36mJapan Airlines
Deal found 6/29$1,124
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 11/306:45 amSTL - SIN
2 stops32h 15mDelta
Sun 12/141:30 amSIN - STL
2 stops48h 02mDelta
Deal found 6/30$1,164
This KAYAK deal was found by Cheapflights users on 6/30. 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.
Wed 12/36:15 amSTL - SIN
2 stops45h 20mANA
Tue 12/166:35 amSIN - STL
2 stops26h 50mANA
Deal found 6/30$1,171
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Mon 9/229:15 amSTL - SIN
3 stops32h 35mMultiple Airlines
Fri 9/266:15 amSIN - STL
2 stops26h 23mMultiple Airlines
Deal found 6/30$1,181
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amSTL - SIN
2 stops29h 20mAlaska Airlines
Thu 9/251:55 amSIN - STL
2 stops35h 04mAlaska Airlines
Deal found 6/30$1,305

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 July 1, 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

Mon 12/1

4:43 pm-8:00 am

2 stops25h 17m

Singapore Changi

Tue 12/16

10:20 pm-10:27 am

2 stops26h 07m

$1,100

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/4

1:30 pm-7:05 am

2 stops28h 35m

Singapore Changi

Fri 9/12

8:10 am-7:57 pm

2 stops48h 47m

$1,101

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/4

6:20 am-6:10 am

2 stops34h 50m

Singapore Changi

Thu 9/11

1:55 am-1:31 pm

2 stops24h 36m

$1,124

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11/30

6:45 am-5:00 am

2 stops32h 15m

Singapore Changi

Sun 12/14

1:30 am-11:32 am

2 stops48h 02m

$1,164

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 12/3

6:15 am-5:35 pm

2 stops45h 20m

Singapore Changi

Tue 12/16

6:35 am-7:25 pm

2 stops26h 50m

$1,171

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 9/22

9:15 am-6:50 am

3 stops32h 35m

Singapore Changi

Fri 9/26

6:15 am-7:38 pm

2 stops26h 23m

$1,181

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 9/22

6:00 am-12:20 am

2 stops29h 20m

Singapore Changi

Thu 9/25

1:55 am-11:59 pm

2 stops35h 04m

$1,305

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

6:30 pm-12:50 am

2 stops40h 20m

$653

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

10:30 am-3:15 pm

3 stops38h 45m

$1,172

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 12/28

8:50 am-8:15 pm

1 stop45h 25m

$1,553

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 month to book a flight from St. Louis to Singapore?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Singapore (average of $1,008). Flying from St. Louis to Singapore in December is currently the most expensive (average of $1,674). 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 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 July 1, 2025.

When flying from St. Louis to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 1, 2025.
Read through reviews of airlines operating flights from St. Louis to Singapore, such as ANA, Japan Airlines, and Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very good
892 reviews
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Japan Airlines
8.3
Very good
1,504 reviews
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Alaska Airlines
8.0
Very good
10,000 reviews
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very good
7,973 reviews
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
United Airlines
7.4
Good
8,858 reviews
ANA
8.4
Very good
892 reviews

Boarding

8.5

Food

7.7

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Singapore (average of $1,008). Flying from St. Louis to Singapore in December is currently the most expensive (average of $1,674). 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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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,457FlexibilityNo cancel feeOn-time69%

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