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STL - SIN

$478 Find Cheap Flights from St. Louis to Singapore - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,244
Typical prices: $1,240-$1,603
Multiple Airlines
Thu 11/1Wed 11/21
STL - SIN • 2 stops
Cheapest one-way
$478
Typical prices: $605-$762
Multiple Airlines
Sat 1/27
STL - SIN • 3 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
Insights
When to travel
October
Cheapest • 29% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Frankfurt am Main (FRA)
Cheapest • Avg $1,435 (round-trip)
San Francisco (SFO)
Shortest trip • 22h 24m (one-way)
Insights
Insights
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We hope you love your trip to Singapore!

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

 

Cheap flights from St. Louis to Singapore with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Sun, Nov 1 - Sat, Nov 21
Multiple Airlines Logo
6:00 am - 9:55 pmSTL  Lambert-St Louis-SIN Singapore Changi
49h 55m2 stops Seattle/Tacoma Intl Incheon Intl
Multiple Airlines Logo
11:10 pm - 11:59 pmSIN  Singapore Changi-STL Lambert-St Louis
38h 49m2 stops Incheon Intl Seattle/Tacoma Intl
$1,244Multiple Airlines
Wed, Oct 21 - Sun, Oct 25
Cathay Pacific Logo
7:02 am - 11:45 amSTL  Lambert-St Louis-SIN Singapore Changi
39h 43m2 stops Seattle/Tacoma Intl Hong Kong Intl
Cathay Pacific Logo
6:00 pm - 11:59 pmSIN  Singapore Changi-STL Lambert-St Louis
42h 59m2 stops Hong Kong Intl Seattle/Tacoma Intl
$1,244Cathay Pacific
Wed, Oct 21 - Sun, Oct 25
Cathay Pacific Logo
7:02 am - 3:05 pmSTL  Lambert-St Louis-SIN Singapore Changi
43h 03m2 stops Seattle/Tacoma Intl Hong Kong Intl
Cathay Pacific Logo
8:20 pm - 9:59 pmSIN  Singapore Changi-STL Lambert-St Louis
38h 39m2 stops Hong Kong Intl Dallas/Fort Worth
$1,244Cathay Pacific
Mon, Feb 15 - Sun, Feb 21
Multiple Airlines Logo
7:29 am - 11:50 amSTL  Lambert-St Louis-SIN Singapore Changi
38h 21m2 stops Chicago O'Hare Intl Hong Kong Intl
Multiple Airlines Logo
7:30 am - 11:56 pmSIN  Singapore Changi-STL Lambert-St Louis
30h 26m2 stops Hong Kong Intl Los Angeles
$1,253Multiple Airlines
Thu, Nov 19 - Thu, Nov 26
Cathay Pacific Logo
6:55 pm - 4:50 pmSTL  Lambert-St Louis-SIN Singapore Changi
31h 55m2 stops Dallas/Fort Worth Hong Kong Intl
Cathay Pacific Logo
7:30 am - 4:34 pmSIN  Singapore Changi-STL Lambert-St Louis
23h 04m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,302Cathay Pacific
Sun, Nov 1 - Sat, Nov 21
United Airlines Logo
7:05 pm - 8:00 amSTL  Lambert-St Louis-SIN Singapore Changi
22h 55m1 stop San Francisco
United Airlines Logo
10:10 am - 10:15 pmSIN  Singapore Changi-STL Lambert-St Louis
26h 05m1 stop San Francisco
$1,341United Airlines
Wed, Oct 21 - Sat, Oct 24
Qatar Airways Logo
11:31 am - 3:45 pmSTL  Lambert-St Louis-SIN Singapore Changi
39h 14m2 stops Chicago O'Hare Intl Doha Hamad Intl
Qatar Airways Logo
3:15 am - 8:57 pmSIN  Singapore Changi-STL Lambert-St Louis
30h 42m2 stops Doha Hamad Intl Chicago O'Hare Intl
$1,344Qatar Airways
Sun, Nov 1 - Sat, Nov 21
United Airlines Logo
7:05 pm - 8:00 amSTL  Lambert-St Louis-SIN Singapore Changi
22h 55m1 stop San Francisco
United Airlines Logo
10:20 pm - 10:32 amSIN  Singapore Changi-STL Lambert-St Louis
26h 12m2 stops San Francisco Chicago O'Hare Intl
$1,346United Airlines
Tue, Dec 29 - Wed, Jan 20
Multiple Airlines Logo
4:05 pm - 7:00 amSTL  Lambert-St Louis-SIN Singapore Changi
48h 55m2 stops Toronto Pearson Intl Vancouver Intl
Multiple Airlines Logo
8:30 am - 3:26 pmSIN  Singapore Changi-STL Lambert-St Louis
44h 56m2 stops Incheon Intl Toronto Pearson Intl
$1,366Multiple Airlines
Thu, Nov 19 - Thu, Nov 26
Multiple Airlines Logo
1:28 pm - 11:50 amSTL  Lambert-St Louis-SIN Singapore Changi
32h 22m3 stops Las Vegas Harry Reid Intl Los Angeles Hong Kong Intl
Multiple Airlines Logo
8:15 pm - 5:40 pmSIN  Singapore Changi-STL Lambert-St Louis
35h 25m2 stops Doha Hamad Intl Atlanta Hartsfield-Jackson
$1,423Multiple Airlines

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 with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Singapore. It’s 12% cheaper than the average day, while Sunday is the most expensive, with prices 86% higher.

What’s 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

Key details for St. Louis to Singapore flights

Low season

January

Cheapest flight

$478
Beat the crowds with an average 3% drop in travelers.
The most popular month to fly with an average 159% increase in travelers.
One-way 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

Your St. Louis to Singapore flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

    Three cabin classes are available on flights from St. Louis to Singapore:

    • Economy Class
    • Business Class
    • First Class

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

    A nonstop flight from St. Louis to Singapore takes 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 much should I expect to pay for a St. Louis to Singapore flight?

    Round-trip flights from St. Louis to Singapore range from $1,240 to $1,603, with an average of $1,453 over the past 12 months. Anything below $1,240 counts as a good deal.

  • 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 $589, which is 22% below the typical average for this route.

  • 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

  • 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).

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

    One-stop flights from St. Louis to Singapore most commonly connect through:

    • San Francisco (SFO) - 74% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 17% of one-stop connections
    • Frankfurt am Main (FRA) - 9% of one-stop connections

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

    Yes. Flexible dates can save you up to 53% on flights from St. Louis to Singapore. 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.

  • 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 24m, compared with 27h 36m via Seattle/Tacoma Intl (SEA) and 29h 03m via Frankfurt am Main (FRA).

  • 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 popular places can I visit in Singapore?

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

Your guide to booking St. Louis to Singapore flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $1,288, about $1,425 less than Sunday fares (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

More options for your flight from St. Louis to Singapore

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

Car rentals in Singapore
Hotels in Singapore
Vacations in Singapore