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Cheap flights from St. Louis to Singapore from S$ 1,460

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11-5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
23 Apr — 30 Apr1
1 adult

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 18 April 2025.

Round-trip from

S$ 1,460

Popular in

August

Cheapest in

November

Average price

S$ 1,845
United Airlines
  • United Airlines
  • 11-5-18-5
  • 3 total stops
  • 84h 11m total
  • St. Louis to Singapore
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Highest demand for flights based on searches. 1% potential increase in price (S$ 49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (S$ 69 potential savings vs. average return price).
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Average for round-trip flights in April 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 18 April 2025.

Sun 11-518:11STL - SIN
1 stop35h 14mUnited Airlines
Sun 18-511:05SIN - STL
2 stops48h 57mUnited Airlines
Deal found 18-4S$ 1,460
Sun 1-607:30STL - SIN
2 stops34h 35mAir Canada
Sun 8-609:10SIN - STL
2 stops47h 48mAir Canada
Deal found 17-4S$ 1,490
Sun 11-506:52STL - SIN
2 stops28h 58mCathay Pacific
Tue 20-501:50SIN - STL
2 stops29h 43mCathay Pacific
Deal found 17-4S$ 1,770
Sun 11-506:30STL - SIN
2 stops41h 05mChina Airlines
Sat 17-502:00SIN - STL
2 stops59h 04mChina Airlines
Deal found 18-4S$ 1,922
Thu 25-907:23STL - SIN
2 stops27h 57mJapan Airlines
Wed 8-1021:50SIN - STL
2 stops28h 09mJapan Airlines
Deal found 17-4S$ 2,533
Sun 1-606:45STL - SIN
2 stops27h 55mMultiple Airlines
Sat 7-601:10SIN - STL
2 stops25h 16mMultiple Airlines
Deal found 17-4S$ 2,796
Tue 9-906:30STL - SIN
2 stops33h 30mDelta
Mon 22-901:10SIN - STL
2 stops36h 27mDelta
Deal found 17-4S$ 3,420
Thu 19-606:20STL - SIN
2 stops37h 40mQatar Airways
Fri 4-703:10SIN - STL
2 stops30h 13mQatar Airways
Deal found 17-4S$ 4,209
Sun 1-615:30STL - SIN
1 stop35h 55mLufthansa
Sat 7-600:05SIN - STL
2 stops28h 25mLufthansa
Deal found 17-4S$ 4,779
Fri 16-510:31STL - SIN
3 stops44h 54mBritish Airways
Tue 27-523:20SIN - STL
2 stops34h 38mBritish Airways
Deal found 16-4S$ 14,552

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 18 April 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

Sun 11-5

18:11-18:25

1 stop35h 14m

Singapore Changi

Sun 18-5

11:05-23:02

2 stops48h 57m

S$ 1,460

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 1-6

07:30-07:05

2 stops34h 35m

Singapore Changi

Sun 8-6

09:10-19:58

2 stops47h 48m

S$ 1,490

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

06:52-00:50

2 stops28h 58m

Singapore Changi

Tue 20-5

01:50-18:33

2 stops29h 43m

S$ 1,770

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

06:30-12:35

2 stops41h 05m

Singapore Changi

Sat 17-5

02:00-00:04

2 stops59h 04m

S$ 1,922

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 25-9

07:23-00:20

2 stops27h 57m

Singapore Changi

Wed 8-10

21:50-12:59

2 stops28h 09m

S$ 2,533

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 1-6

06:45-23:40

2 stops27h 55m

Singapore Changi

Sat 7-6

01:10-13:26

2 stops25h 16m

S$ 2,796

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9-9

06:30-05:00

2 stops33h 30m

Singapore Changi

Mon 22-9

01:10-00:37

2 stops36h 27m

S$ 3,420

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 19-6

06:20-09:00

2 stops37h 40m

Singapore Changi

Fri 4-7

03:10-20:23

2 stops30h 13m

S$ 4,209

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 1-6

15:30-16:25

1 stop35h 55m

Singapore Changi

Sat 7-6

00:05-15:30

2 stops28h 25m

S$ 4,779

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 16-5

10:31-20:25

3 stops44h 54m

Singapore Changi

Tue 27-5

23:20-20:58

2 stops34h 38m

S$ 14,552

Flights are sorted by cheapest return flights first.

Deals found on 18-4

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

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 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

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 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

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 18 April 2025.
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,447 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
China Airlines
8.2
Very Good
729 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Delta
8.0
Very Good
7,917 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Cathay Pacific
7.5
Good
849 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Qatar Airways
7.4
Good
3,554 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Crew

8.7

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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 S$ 1,460. Other airlines that can offer you cheap pricing are Air Canada, from S$ 1,490, and Cathay Pacific, from S$ 1,770. United Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

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