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Cheap flights from St. Louis to Singapore from S$ 1,087

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 18-5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
29 May — 5 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Singapore

Enter your travel dates to find the best prices.

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 29 April 2026.

Mon 31-819:34
STL
-
SIN
2 stops55h 11m
Qatar Airways
Thu 17-919:40
SIN
-
STL
2 stops41h 19m
Qatar Airways
Deal found 28-4S$ 1,476
Mon 31-815:00
STL
-
SIN
1 stop37h 35m
Multiple Airlines
Thu 17-909:00
SIN
-
STL
1 stop27h 59m
Multiple Airlines
Deal found 28-4S$ 1,852
Thu 29-1010:14
STL
-
SIN
2 stops33h 31m
Qatar Airways
Sun 1-1103:15
SIN
-
STL
2 stops34h 41m
Qatar Airways
Deal found 23-4S$ 1,890
Thu 28-507:05
STL
-
SIN
2 stops33h 10m
Air Canada
Thu 4-607:00
SIN
-
STL
2 stops45h 46m
Air Canada
Deal found 28-4S$ 2,077
Thu 11-606:02
STL
-
SIN
2 stops38h 18m
Qatar Airways
Thu 18-619:40
SIN
-
STL
2 stops41h 36m
Qatar Airways
Deal found 27-4S$ 2,093
Mon 13-719:56
STL
-
SIN
2 stops60h 19m
Qatar Airways
Fri 17-719:40
SIN
-
STL
2 stops41h 35m
Qatar Airways
Deal found 28-4S$ 2,174
Sat 23-507:05
STL
-
SIN
2 stops57h 10m
Air Canada
Sun 14-607:00
SIN
-
STL
2 stops50h 25m
Air Canada
Deal found 28-4S$ 2,190
Tue 22-1207:00
STL
-
SIN
2 stops41h 55m
Qatar Airways
Mon 28-1203:15
SIN
-
STL
2 stops34h 44m
Qatar Airways
Deal found 28-4S$ 2,208
Thu 10-907:44
STL
-
SIN
2 stops33h 26m
Japan Airlines
Mon 14-908:05
SIN
-
STL
2 stops23h 33m
Japan Airlines
Deal found 27-4S$ 2,495
Thu 10-908:52
STL
-
SIN
1 stop32h 23m
United Airlines
Mon 14-920:35
SIN
-
STL
2 stops32h 03m
United Airlines
Deal found 27-4S$ 2,541
Thu 29-1013:30
STL
-
SIN
2 stops28h 30m
United Airlines
Mon 2-1110:10
SIN
-
STL
1 stop21h 43m
United Airlines
Deal found 25-4S$ 2,547

Find 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 29 April 2026.

Round-trip from

S$ 1,476

One-way from

S$ 1,087

Popular in

February

Cheapest in

January

Average price

S$ 2,140
Qatar Airways
  • Qatar Airways
  • 31-8-17-9
  • 4 total stops
  • 96h 30m total
  • St. Louis to Singapore
Search Deals
18-5
  • 18-5
  • 3 total stops
  • 53h 18m total
  • St. Louis to Singapore
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (S$ 218 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (S$ 154 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 200,618 searches. Data last updated 29 April 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 return flight

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 11-6

06:02-09:20

2 stops38h 18m

Singapore Changi

Thu 18-6

19:40-00:16

2 stops41h 36m

S$ 2,093

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 10-9

08:52-06:15

1 stop32h 23m

Singapore Changi

Mon 14-9

08:45-18:24

1 stop22h 39m

S$ 2,541

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 31-8

08:52-21:30

2 stops47h 38m

Singapore Changi

Thu 17-9

22:50-15:38

3 stops53h 48m

S$ 2,548

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 11-6

06:00-00:45

2 stops29h 45m

Singapore Changi

Thu 18-6

20:35-15:46

2 stops32h 11m

S$ 2,685

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 23-5

19:23-18:35

1 stop34h 12m

Singapore Changi

Sun 14-6

11:05-21:16

2 stops47h 11m

S$ 2,765
Fastest return journey

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 12-6

19:23-06:15

1 stop21h 52m

Singapore Changi

Fri 19-6

20:35-08:41

2 stops25h 06m

S$ 3,556

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 15-5

11:06-16:15

2 stops40h 09m

Singapore Changi

Wed 20-5

01:30-23:54

2 stops35h 24m

S$ 9,027
Cheapest one-way

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 18-5

17:27-11:45

3 stops53h 18m

S$ 1,087

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 17-5

07:05-05:15

2 stops33h 10m

S$ 1,234

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 17-5

19:41-16:25

3 stops55h 44m

S$ 1,234

Flights are sorted by cheapest return flights first.

Deals found on 27-4

Showing 1-10 of 13 resultsSorted by cheapest first
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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 return 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

How much does it cost for a return flight from St. Louis to Singapore?

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 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 5h 55m. The distance between St. Louis and Singapore is about 15310 km. 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 holiday 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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How does Cheapflights help users find flights from St. Louis to Singapore?

Cheapflights helps you search for flights from St. Louis to Singapore via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Singapore?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Singapore for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis to Singapore with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Singapore, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis to Singapore become cheaper?

Of course! You can now track prices for flights from St. Louis to Singapore and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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