Which airports can I use when flying from St. Louis to Singapore?

Flights from St. Louis to Singapore usually depart from Lambert-St Louis (STL) and arrive at Singapore Changi (SIN).

What cabin classes can I book on flights from St. Louis to Singapore?

Four cabin classes are available on flights from St. Louis to Singapore: • Economy Class • Premium Economy Class • Business Class • First Class Prices vary by airline.

Which airports do connecting flights from St. Louis to Singapore pass through?

Connecting flights from St. Louis to Singapore most commonly pass through: • San Francisco (SFO) - 83% of one-stop connections • Seattle/Tacoma Intl (SEA) - 17% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

Can I save money by using flexible dates for flights from St. Louis to Singapore?

Yes. Being flexible with your travel dates can save you up to 53% on the St. Louis to Singapore route. Tuesday is the cheapest departure day at $1,288 round-trip on average, while Sunday is the most expensive at $2,713, a difference of $1,425. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Singapore?

Some of the most popular sights in Singapore are Marina Bay Sands, Marina Bay and Sentosa. These are among the most viewed places in Singapore on KAYAK.

How long is a flight from St. Louis to Singapore?

A nonstop flight from St. Louis to Singapore takes 0h 00m, covering 9,513 miles.

Do I need a passport to fly from St. Louis to Singapore?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from St. Louis to Singapore looking right now?

One-way fares from St. Louis to Singapore are currently lower than usual. Average one-way flight prices are about $682, which is 11% below the typical average for this route.

How much time can I save by choosing a different layover airport from St. Louis to Singapore?

Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time at 22h 38m, compared with 27h 36m via Seattle/Tacoma Intl (SEA).

What is the time difference between St. Louis and Singapore?

Singapore is 13 hours ahead of St. Louis (Singapore Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Singapore Changi Airport (SIN)?

Singapore Changi Airport (SIN) hosts 5 major car rental companies, with daily rates starting from around $59 for economy cars. Top options include: · Avis · Sixt · Thrifty · Hertz · Europcar

How much should I expect to pay for a St. Louis to Singapore flight?

Round-trip flights from St. Louis to Singapore range from $1,201 to $1,603, with an average of $1,410 over the past 12 months. Anything below $1,201 counts as a good deal.

What is the cheapest airline to fly from St. Louis to Singapore?

Air Canada ($1,096) and Lufthansa ($1,165) are the cheapest airlines to fly round-trip from St. Louis to Singapore according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from St. Louis to Singapore?

San Francisco (SFO) is the most popular layover for the St. Louis to Singapore route. 83% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SFO.

What is the cheapest layover airport when flying from St. Louis to Singapore?

Flights via Seattle/Tacoma Intl (SEA) offer the most affordable fares, with an average round-trip price of $1,603. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Singapore which airport offers the shortest layover?

San Francisco (SFO) had the shortest average connection time for St. Louis to Singapore layovers at 759 minutes over the past 3 months.

$617 CHEAP FLIGHTS from St. Louis to Singapore (STL - SIN)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$1,096

Typical prices: $1,201-$1,603

Air Canada

Sat 10/6Sat 10/13

STL - SIN • 2 stops

Cheapest one-way

$558

Typical prices: $754-$822

Multiple Airlines

Fri 2/9

STL - SIN • 2 stops

Nonstop flights

Not available

There are currently no direct flights between St. Louis and Singapore. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

October

Cheapest • 27% price drop

December

Most popular

Good to know

Top layover airports

Seattle/Tacoma Intl (SEA)

Cheapest • Avg $1,603 (round-trip)

San Francisco (SFO)

Shortest trip • 22h 38m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Singapore!

Flight Deals

Cheap Flights from St. Louis to Singapore (STL-SIN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to Singapore

Tue, Oct 6 - Tue, Oct 13

12:10 pm - 5:15 amSTL Lambert-St Louis-SIN Singapore Changi

28h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

7:00 am - 6:41 pmSIN Singapore Changi-STL Lambert-St Louis

48h 41m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,096Air Canada

Thu, Oct 29 - Thu, Nov 5

4:05 pm - 7:00 amSTL Lambert-St Louis-SIN Singapore Changi

49h 55m2 stops Toronto Pearson Intl Vancouver Intl

8:40 am - 3:26 pmSIN Singapore Changi-STL Lambert-St Louis

44h 46m2 stops Vancouver Intl Toronto Pearson Intl

$1,142Air Canada

Thu, Jan 21 - Sun, Jan 31

11:45 am - 6:50 amSTL Lambert-St Louis-SIN Singapore Changi

29h 05m2 stops Newark Munich Franz Josef Strauss

1:30 am - 3:26 pmSIN Singapore Changi-STL Lambert-St Louis

51h 56m2 stops Zurich Toronto Pearson Intl

$1,154Multiple Airlines

Wed, Jan 13 - Sun, Jan 24

3:54 pm - 8:45 amSTL Lambert-St Louis-SIN Singapore Changi

50h 51m2 stops Seattle/Tacoma Intl Doha Hamad Intl

3:15 am - 2:56 pmSIN Singapore Changi-STL Lambert-St Louis

49h 41m2 stops Doha Hamad Intl Seattle/Tacoma Intl

$1,162Multiple Airlines

Wed, Jan 13 - Mon, Jan 25

3:40 pm - 8:55 amSTL Lambert-St Louis-SIN Singapore Changi

27h 15m1 stop Frankfurt am Main

11:55 pm - 7:40 pmSIN Singapore Changi-STL Lambert-St Louis

33h 45m2 stops Frankfurt am Main Newark

$1,165Lufthansa

Sun, Oct 4 - Sun, Oct 11

12:10 pm - 5:15 amSTL Lambert-St Louis-SIN Singapore Changi

28h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

7:00 am - 6:41 pmSIN Singapore Changi-STL Lambert-St Louis

48h 41m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,171Air Canada

Fri, Oct 9 - Thu, Oct 15

1:06 pm - 8:50 amSTL Lambert-St Louis-SIN Singapore Changi

30h 44m2 stops Chicago O'Hare Intl Doha Hamad Intl

3:15 am - 11:59 pmSIN Singapore Changi-STL Lambert-St Louis

33h 44m2 stops Doha Hamad Intl Seattle/Tacoma Intl

$1,260Qatar Airways

Fri, Oct 2 - Tue, Oct 6

12:10 pm - 5:15 amSTL Lambert-St Louis-SIN Singapore Changi

28h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

7:00 am - 6:41 pmSIN Singapore Changi-STL Lambert-St Louis

48h 41m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,270Air Canada

Tue, Oct 6 - Tue, Oct 13

1:36 pm - 6:15 amSTL Lambert-St Louis-SIN Singapore Changi

27h 39m2 stops Denver Intl San Francisco

8:45 am - 6:43 pmSIN Singapore Changi-STL Lambert-St Louis

22h 58m1 stop San Francisco

$1,292United Airlines

Tue, Oct 6 - Tue, Oct 13

7:08 am - 6:35 pmSTL Lambert-St Louis-SIN Singapore Changi

22h 27m1 stop San Francisco

8:45 am - 6:43 pmSIN Singapore Changi-STL Lambert-St Louis

22h 58m1 stop San Francisco

$1,292United Airlines

Recent last minute flight deals from St. Louis to Singapore

Mon, Aug 31 - Thu, Sep 10

3:32 pm - 12:45 amSTL Lambert-St Louis-SIN Singapore Changi

44h 13m2 stops Dallas/Fort Worth Hong Kong Intl

7:20 am - 9:57 pmSIN Singapore Changi-STL Lambert-St Louis

27h 37m2 stops Hong Kong Intl Dallas/Fort Worth

$4,921Cathay Pacific

Mon, Aug 31 - Wed, Sep 9

9:32 am - 12:25 pmSTL Lambert-St Louis-SIN Singapore Changi

37h 53m2 stops Chicago O'Hare Intl Hong Kong Intl

12:45 pm - 9:57 pmSIN Singapore Changi-STL Lambert-St Louis

46h 12m2 stops Hong Kong Intl Dallas/Fort Worth

$4,921Cathay Pacific

Fri, Aug 28 - Fri, Sep 11

3:04 pm - 6:55 pmSTL Lambert-St Louis-SIN Singapore Changi

38h 51m2 stops Seattle/Tacoma Intl Manila Ninoy Aquino Intl

2:30 pm - 6:38 pmSIN Singapore Changi-STL Lambert-St Louis

41h 08m2 stops Manila Ninoy Aquino Intl Seattle/Tacoma Intl

$5,476Multiple Airlines

Fri, Aug 28 - Sat, Sep 12

3:04 pm - 9:05 amSTL Lambert-St Louis-SIN Singapore Changi

29h 01m2 stops Seattle/Tacoma Intl Manila Ninoy Aquino Intl

8:00 pm - 6:38 pmSIN Singapore Changi-STL Lambert-St Louis

59h 38m2 stops Manila Ninoy Aquino Intl Seattle/Tacoma Intl

$5,830Multiple Airlines

Sat, Aug 29 - Fri, Sep 11

2:40 pm - 6:40 amSTL Lambert-St Louis-SIN Singapore Changi

51h 00m2 stops Toronto Pearson Intl Tokyo Haneda

6:15 am - 6:41 pmSIN Singapore Changi-STL Lambert-St Louis

49h 26m2 stops Tokyo Narita Montreal Pierre Elliott Trudeau Intl

$6,070Air Canada

Mon, Aug 31 - Thu, Sep 10

9:05 pm - 1:55 pmSTL Lambert-St Louis-SIN Singapore Changi

27h 50m2 stops Los Angeles Taipei City Taiwan Taoyuan Intl

3:20 pm - 3:38 pmSIN Singapore Changi-STL Lambert-St Louis

37h 18m3 stops Taipei City Taiwan Taoyuan Intl San Francisco Chicago O'Hare Intl

$7,136Multiple Airlines

Mon, Aug 31 - Thu, Sep 10

9:30 am - 11:20 pmSTL Lambert-St Louis-SIN Singapore Changi

24h 50m2 stops Chicago O'Hare Intl Tokyo Narita

8:45 am - 5:59 pmSIN Singapore Changi-STL Lambert-St Louis

22h 14m1 stop San Francisco

$7,654United Airlines

Fri, Aug 28 - Thu, Sep 10

6:25 am - 12:30 pmSTL Lambert-St Louis-SIN Singapore Changi

41h 05m3 stops Los Angeles San Francisco Taipei City Taiwan Taoyuan Intl

2:00 am - 11:40 amSIN Singapore Changi-STL Lambert-St Louis

46h 40m2 stops Taipei City Taiwan Taoyuan Intl Los Angeles

$8,683Multiple Airlines

Mon, Aug 31 - Wed, Sep 9

7:36 pm - 5:35 pmSTL Lambert-St Louis-SIN Singapore Changi

32h 59m1 stop Seattle/Tacoma Intl

12:25 pm - 2:21 pmSIN Singapore Changi-STL Lambert-St Louis

38h 56m2 stops Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl

$8,845Multiple Airlines

Fri, Aug 28 - Fri, Sep 11

6:25 am - 12:30 pmSTL Lambert-St Louis-SIN Singapore Changi

41h 05m3 stops Los Angeles San Francisco Taipei City Taiwan Taoyuan Intl

2:00 am - 12:20 pmSIN Singapore Changi-STL Lambert-St Louis

47h 20m2 stops Taipei City Taiwan Taoyuan Intl Los Angeles

$8,897Multiple Airlines

Booking Insights

Price, demand and travel trends for St. Louis to Singapore flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Singapore with more confidence.

Prices

Airlines

Layovers

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

Round-trip flights from St. Louis to Singapore start at $1,096. Prices are below average for this route right now, with typical round-trip fares ranging from $1,201 to $1,603. The lowest price found in the past 5 days was $1,096 on Air Canada.

What's the cheapest day of the week to fly from St. Louis to Singapore?

Tuesday is the cheapest day of the week to fly from St. Louis to Singapore, it is 9% cheaper than the average day. Sunday is the most expensive day with flight prices 92% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from St. Louis to Singapore?

October is the cheapest month to fly from St. Louis to Singapore at $1,035 round-trip.
April ($2,228) and December ($2,115) are the most expensive months.
The price difference between flying in the cheapest and most expensive months is 115% on average.

This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	March
High season	December
Cheapest flight	$558

Best time to beat the crowds but there is an average 8% increase in price.

Most popular time to fly with an average 50% increase in price.

Flight from St. Louis to Singapore

When to book flights from St. Louis to Singapore

Are your dates flexible? Find out the best times to travel from St. Louis to Singapore based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from St. Louis to Singapore?
Flights from St. Louis to Singapore usually depart from Lambert-St Louis (STL) and arrive at Singapore Changi (SIN).
What cabin classes can I book on flights from St. Louis to Singapore?
Four cabin classes are available on flights from St. Louis to Singapore:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.
Which airports do connecting flights from St. Louis to Singapore pass through?
Connecting flights from St. Louis to Singapore most commonly pass through:

• San Francisco (SFO) - 83% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 17% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.
Can I save money by using flexible dates for flights from St. Louis to Singapore?
Yes. Being flexible with your travel dates can save you up to 53% on the St. Louis to Singapore route. Tuesday is the cheapest departure day at $1,288 round-trip on average, while Sunday is the most expensive at $2,713, a difference of $1,425. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Singapore?
Some of the most popular sights in Singapore are Marina Bay Sands, Marina Bay and Sentosa. These are among the most viewed places in Singapore on KAYAK.
How long is a flight from St. Louis to Singapore?
A nonstop flight from St. Louis to Singapore takes 0h 00m, covering 9,513 miles.
Do I need a passport to fly from St. Louis to Singapore?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How are flight prices from St. Louis to Singapore looking right now?
One-way fares from St. Louis to Singapore are currently lower than usual. Average one-way flight prices are about $682, which is 11% below the typical average for this route.
How much time can I save by choosing a different layover airport from St. Louis to Singapore?
Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time at 22h 38m, compared with 27h 36m via Seattle/Tacoma Intl (SEA).
What is the time difference between St. Louis and Singapore?
Singapore is 13 hours ahead of St. Louis (Singapore Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Singapore Changi Airport (SIN)?
Singapore Changi Airport (SIN) hosts 5 major car rental companies, with daily rates starting from around $59 for economy cars. Top options include:
· Avis
· Sixt
· Thrifty
· Hertz
· Europcar
How much should I expect to pay for a St. Louis to Singapore flight?
Round-trip flights from St. Louis to Singapore range from $1,201 to $1,603, with an average of $1,410 over the past 12 months. Anything below $1,201 counts as a good deal.

If your dates can be flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average $1,288 - about $1,425 less than Sunday (53% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Singapore trip for October. Fares historically average $1,035 round-trip in that month - typically $1,193 less than the most expensive month, which is April (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Singapore Changi Airport.
- Crowne Plaza Changi Airport by IHG
- Yotelair Singapore Changi Airport
- Changi Transit Hotel Terminal 1

Everything you need to know for your flight from St. Louis to Singapore

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on your arrival and departure airports

St. Louis (STL)

Singapore (SIN)

STL - SIN

$617 Find Cheap Flights from St. Louis to Singapore - Compare and Save

Everything you should know

Cheap Flights from St. Louis to Singapore (STL-SIN)

Recent round-trip flight deals from St. Louis to Singapore

Recent one-way flight deals from St. Louis to Singapore

Recent last minute flight deals from St. Louis to Singapore

Price, demand and travel trends for St. Louis to Singapore flights

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

What's the cheapest day of the week to fly from St. Louis to Singapore?

What is the cheapest month to fly from St. Louis to Singapore?

What is the cheapest airline to fly from St. Louis to Singapore?

What is the most popular layover airport when flying from St. Louis to Singapore?

What is the cheapest layover airport when flying from St. Louis to Singapore?

When flying from St. Louis to Singapore which airport offers the shortest layover?

Key details for St. Louis to Singapore flights

Low season

High season

Cheapest flight

When to book flights from St. Louis to Singapore

Your St. Louis to Singapore flight questions, answered

Your guide to booking St. Louis to Singapore flights

Everything you need to know for your flight from St. Louis to Singapore

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Singapore

Complete your trip to Singapore with a hotel stay or car rental

Find direct flights to and from St. Louis and Singapore

Flights to other popular destinations

Flights from domestic origins to Singapore

Choose which airport to fly into in Singapore