Are direct flights from Singapore to St. Louis always the best option?

Direct flights offer convenience and save travel time, but they are not always the most economical choice. Flights with one or more layovers can often be significantly cheaper. Consider your budget and time constraints when deciding between direct and connecting flights.

Can flexible travel dates help on Singapore to St. Louis flights?

Yes, having flexible travel dates can often lead to finding more affordable flights. Prices can vary greatly depending on the day of the week or season. Flying during off-peak times or mid-week can frequently result in lower fares.

What extra costs should I check before booking Singapore to St. Louis flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Also, consider the cost of transportation to and from the airport at both your origin and destination. These additional expenses can impact your total travel budget.

Flights From Singapore

To St. Louis

Cheap Flights from Singapore to St. Louis

Browse current best options from Singapore. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Singapore

RatePunk searches hundreds of travel sites at once for deals on flights to St. Louis

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from Singapore to St. Louis

Explore current cheapest deals departing from Singapore to St. Louis

2026-09-18 – 2026-09-19
SIN - St. Louis
90% AI deal score
$1,432
$1,115
Round trip
2026-09-02 – 2026-09-11
SIN - St. Louis
80% AI deal score
$1,329
$1,156
Round trip
2026-09-10 – 2026-09-14
SIN - St. Louis
86% AI deal score
$1,435
$1,159
Round trip
2026-09-02 – 2026-09-14
SIN - St. Louis
79% AI deal score
$1,316
$1,173
Round trip
2026-09-02 – 2026-09-06
SIN - St. Louis
86% AI deal score
$1,442
$1,174
Round trip
2026-09-12 – 2026-09-20
SIN - St. Louis
79% AI deal score
$1,335
$1,217
Round trip
2026-09-03 – 2026-09-07
SIN - St. Louis
81% AI deal score
$1,442
$1,234
Round trip
2026-08-11 – 2026-08-17
SIN - St. Louis
88% AI deal score
$1,661
$1,246
Round trip
2026-09-08 – 2026-09-14
SIN - St. Louis
77% AI deal score
$1,376
$1,272
Round trip
2026-09-11 – 2026-09-20
SIN - St. Louis
77% AI deal score
$1,327
$1,281
Round trip

Singapore to St. Louis: Overview

Insights for flights from Singapore to St. Louis

Right now, only 1% of recent fares from Singapore to St. Louis are classified as a good price. The cheapest flights from Singapore to St. Louis typically range from $1515–$1926, with a median fare of $1618. Current fares are significantly below the typical level.

When is the cheapest time to fly from Singapore to St. Louis? The most affordable month to fly is September, with a median fare of $1132. Other inexpensive months include February, with a median of $1324, and January, where the median fare is $1331.

Most itineraries from Singapore to St. Louis connect at least once. There are no direct flights from Singapore to St. Louis, and for connecting itineraries, the typical number of stopovers is 2.

How long is the flight from Singapore to St. Louis? A typical journey from Singapore to St. Louis takes 64h 50m, including connections. This is a long-haul route, covering a substantial distance of 15320 km.

How much is a round trip from Singapore to St. Louis

Regular price: $1,259 - $1,795

Prices are currently below the regular range.

The regular price range for flights from Singapore Changi to St. Louis Lambert International is between $1259 and $1795. The current lowest deal is $1119 with Japan Airlines for travel from Sep 18-Sep 19.

now $1,119

Low $1,259

High $1,795

The cheapest time to fly from Singapore to St. Louis

Flights from Singapore to St. Louis are cheapest in September, with a median price of $1132. The most expensive month to fly is August, with a median price of $2730. Generally, prices are lower from January to November.

September

Cheapest

Flights from $1,132

August

Most Expensive

Flights from $2,730

Jan

Feb

Apr

May

Jun

Jul

Aug

Sep

Nov

Direct flights from Singapore to St. Louis

Alaska Airlines, Inc.

Singapore Airlines

Air Canada

United Airlines

Last-minute flights going from Singapore to St. Louis

Tue, Jul 28

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

United Airlines

$1,649

$1,777

One-way

Tue, Jul 28

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$1,795

$6,858

One-way

Thu, Jul 30

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$1,709

$6,361

One-way

Sat, Aug 1

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$2,144

$6,361

One-way

Sat, Aug 1

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

China Airlines

$1,919

$6,445

One-way

Sun, Aug 2

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

United Airlines

$1,881

$2,079

One-way

Biggest price drops on these dates for flights from Singapore to St. Louis

6 nights

Aug 25 - Aug 31

$1,638 → $1,151

30%

7 nights

Aug 21 - Aug 28

$1,634 → $1,217

26%

6 nights

Aug 21 - Aug 27

$1,638 → $1,259

23%

4 nights

Oct 21 - Oct 25

$1,472 → $1,215

17%

Popular Airports to fly from Singapore to St. Louis

Singapore - St. Louis route insights

💸 Price insights

Recent fares below the typical level

Recent fares from Singapore to St. Louis are below the typical level at $1119.

📅 Best time to fly

September is historically cheapest

Historically, September is the cheapest month to fly, with a median price of $1132.

⏱️ Flight duration

Typically 64h 50m with connections

Flights from Singapore to St. Louis typically take 64h 50m, with 2 stopovers being common.

✈️ Airlines & availability

Connecting flights dominant

Connecting flights are dominant for this route, with no direct flights available historically.

🏆 Airline highlight

Alaska Airlines offers connecting flights

Alaska Airlines has historically offered 43 connecting deals for this route.

🎯 Booking tip

Deals are rare for this route

Deals for flights from Singapore to St. Louis are historically rare.

Singapore main airports to depart from

Singapore Changi (SIN)

Cheapest

Singapore Changi is the cheapest departure airport for flights from Singapore to St. Louis.

📍 ~18 km from city center (reachable by car or train)

💸 Flights from ~$1156

St. Louis main airports to arrive at

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International is the cheapest option for flights from Singapore to St. Louis.

📍 ~20 km from St. Louis (reachable by car)

💸 Flights from ~$1156

Airports nearby St. Louis used as alternative

MidAmerica St. Louis (BLV)

MidAmerica St. Louis is a useful alternative for budget routes, especially for travelers on the Illinois side.

📍 ~40 km from St. Louis (reachable by car)

💸 Flights from ~$1417

Business & First Class Flight Deals to St. Louis

81% AI deal score

$6,948

$6,008

Save $940

Frequently Asked Questions About Flights to St. Louis

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can also help identify better deals. Look out for layovers, as these flights are often less expensive than direct options.

Booking flights in advance, often several months before your intended travel date, can sometimes result in lower prices. However, prices can fluctuate, so monitoring fares over time may help you find a good deal. Mid-week bookings are sometimes suggested for potential savings.

Yes, comparing nearby airports at both your origin and destination can sometimes uncover more affordable flight options. While it may add to your ground travel time, the potential savings on airfare can be significant. Always check transportation costs to and from these alternative airports.

Related routes

More routes from Singapore

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Flights to St. Louis from other cities

Flights from Aberdeen to St. Louis Flights from Atlanta to St. Louis Flights from Austin to St. Louis Flights from Brussels to St. Louis Flights from Dallas to St. Louis Flights from Florence to St. Louis Flights from Las Vegas to St. Louis Flights from Los Angeles to St. Louis Flights from Milwaukee to St. Louis Flights from New York to St. Louis Flights from Orlando to St. Louis Flights from Phoenix to St. Louis

Singapore to St. Louis: Overview

Insights for flights from Singapore to St. Louis

Most itineraries from Singapore to St. Louis connect at least once. There are no direct flights from Singapore to St. Louis, and for connecting itineraries, the typical number of stopovers is 2.

How much is a round trip from Singapore to St. Louis

Regular price: $1,259 - $1,795

Prices are currently below the regular range.

now $1,119

Low $1,259

High $1,795

The cheapest time to fly from Singapore to St. Louis

September

Cheapest

Flights from $1,132

August

Most Expensive

Flights from $2,730

Jan

Feb

Apr

May

Jun

Jul

Aug

Sep

Nov

Direct flights from Singapore to St. Louis

Alaska Airlines, Inc.

Singapore Airlines

Air Canada

United Airlines

Last-minute flights going from Singapore to St. Louis

Tue, Jul 28

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

United Airlines

$1,649

$1,777

One-way

Tue, Jul 28

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$1,795

$6,858

One-way

Thu, Jul 30

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$1,709

$6,361

One-way

Sat, Aug 1

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

Singapore Airlines, Alaska Airlines, Inc.

$2,144

$6,361

One-way

Sat, Aug 1

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

China Airlines

$1,919

$6,445

One-way

Sun, Aug 2

⌛ Last-Minute

SIN - St. Louis

Singapore (SIN) - St. Louis (STL)

United Airlines

$1,881

$2,079

One-way

Biggest price drops on these dates for flights from Singapore to St. Louis

6 nights

Aug 25 - Aug 31

$1,638 → $1,151

30%

7 nights

Aug 21 - Aug 28

$1,634 → $1,217

26%

6 nights

Aug 21 - Aug 27

$1,638 → $1,259

23%

4 nights

Oct 21 - Oct 25

$1,472 → $1,215

17%

Popular Airports to fly from Singapore to St. Louis