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Cheap flights from St. Louis to Singapore from S$ 1,445

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2-10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
2 Apr — 9 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 28 March 2025.

Round-trip from

S$ 1,476

Popular in

August

Cheapest in

November

Average price

S$ 1,804
United Airlines
  • United Airlines
  • 11-5-21-5
  • 2 total stops
  • 56h 06m total
  • St. Louis to Singapore
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Highest demand for flights based on searches. 0% potential increase in price (S$ 15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (S$ 68 potential savings vs. average return price).
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Average for round-trip flights in March 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 28 March 2025.

Thu 2-1016:05STL - SIN
2 stops50h 00mAir Canada
Sat 18-1009:10SIN - STL
2 stops43h 06mAir Canada
Deal found 27-3S$ 1,445
Sun 11-518:11STL - SIN
1 stop35h 14mUnited Airlines
Wed 21-509:00SIN - STL
1 stop20h 52mUnited Airlines
Deal found 27-3S$ 1,476
Mon 6-1014:55STL - SIN
1 stop37h 40mMultiple Airlines
Fri 10-1009:00SIN - STL
1 stop27h 56mMultiple Airlines
Deal found 27-3S$ 1,779
Sun 27-716:52STL - SIN
2 stops36h 33mFinnair
Mon 11-821:35SIN - STL
2 stops33h 46mFinnair
Deal found 27-3S$ 1,862
Mon 6-1018:05STL - SIN
2 stops28h 40mCathay Pacific
Thu 9-1001:50SIN - STL
2 stops29h 13mCathay Pacific
Deal found 27-3S$ 1,906
Tue 29-710:00STL - SIN
2 stops34h 00mQatar Airways
Sun 10-818:45SIN - STL
2 stops42h 14mQatar Airways
Deal found 27-3S$ 2,225
Mon 28-719:05STL - SIN
2 stops39h 35mDelta
Fri 8-807:30SIN - STL
2 stops30h 08mDelta
Deal found 27-3S$ 2,305
Tue 9-907:00STL - SIN
2 stops34h 10mJapan Airlines
Tue 23-921:50SIN - STL
2 stops38h 09mJapan Airlines
Deal found 27-3S$ 2,581
Sun 11-515:30STL - SIN
1 stop35h 55mLufthansa
Tue 20-500:05SIN - STL
2 stops28h 42mLufthansa
Deal found 27-3S$ 3,232
Sun 11-515:43STL - SIN
2 stops33h 22mEmirates
Sat 17-501:40SIN - STL
2 stops33h 23mEmirates
Deal found 26-3S$ 5,570
Sat 24-516:15STL - SIN
3 stops39h 10mBritish Airways
Sun 1-623:20SIN - STL
2 stops34h 38mBritish Airways
Deal found 28-3S$ 14,853

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 28 March 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

Wed 21-5

09:00-16:52

1 stop20h 52m

S$ 1,476

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 24-5

13:30-07:05

2 stops52h 35m

Singapore Changi

Sun 1-6

09:10-19:58

2 stops47h 48m

S$ 1,513

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 27-7

16:52-18:25

2 stops36h 33m

Singapore Changi

Mon 11-8

21:35-18:21

2 stops33h 46m

S$ 1,862

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

06:52-05:30

2 stops33h 38m

Singapore Changi

Tue 20-5

01:50-18:33

2 stops29h 43m

S$ 1,939

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 29-7

10:00-09:00

2 stops34h 00m

Singapore Changi

Sun 10-8

18:45-23:59

2 stops42h 14m

S$ 2,225

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

14:30-13:35

3 stops34h 05m

Singapore Changi

Tue 20-5

00:30-19:58

2 stops32h 28m

S$ 2,297

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 28-7

19:05-23:40

2 stops39h 35m

Singapore Changi

Fri 8-8

07:30-00:38

2 stops30h 08m

S$ 2,305

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9-9

07:00-06:10

2 stops34h 10m

Singapore Changi

Tue 23-9

21:50-22:59

2 stops38h 09m

S$ 2,581

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

15:30-16:25

1 stop35h 55m

Singapore Changi

Tue 20-5

00:05-15:47

2 stops28h 42m

S$ 3,232

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 11-5

15:43-14:05

2 stops33h 22m

Singapore Changi

Sat 17-5

01:40-22:03

2 stops33h 23m

S$ 5,570

Flights are sorted by cheapest return flights first.

Deals found on 27-3

Showing 1-10 of 11 results
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 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 28 March 2025.
Get a feel of what it's like to fly with Japan Airlines, Emirates and Delta from St. Louis to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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
1,440 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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.
Emirates
8.0
Very Good
3,190 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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
7,897 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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.
Finnair
7.6
Good
1,267 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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
837 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Boarding

8.4

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$ 1,476. Other airlines that can offer you cheap pricing are Air Canada, from S$ 1,513, and Finnair, from S$ 1,862. United Airlines is priced at 28% 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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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.

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