STL - SIN

S$ 610 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 return flight
S$ 1,545
Typical prices: S$ 1,584-S$ 2,049
Lufthansa
Thu 6-12Sat 22-12
STL - SIN • 1 stop
Cheapest one-way flight
S$ 610
Typical prices: S$ 774-S$ 974
Multiple Airlines
Tue 6-2
STL - SIN • 2 stops
Direct 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 stopover airports
Frankfurt am Main (FRA)
Cheapest • Avg S$ 1,834 (return)
San Francisco (SFO)
Shortest trip • 22h 24m (one-way)
Insights
Insights
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We hope you enjoy your trip to Singapore!
Flight Deals
Booking Insights
Flight Deals

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

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

Recent return flight deals from St. Louis to Singapore

Sun, 6 Dec - Tue, 22 Dec
Lufthansa Logo
15:40 - 17:20STL  Lambert-St Louis-SIN Singapore Changi
35h 40m1 stop Frankfurt am Main
Lufthansa Logo
23:55 - 13:45SIN  Singapore Changi-STL Lambert-St Louis
27h 50m1 stop Frankfurt am Main
S$ 1,545Lufthansa
3+ days ago
Sun, 6 Dec - Tue, 22 Dec
Lufthansa Logo
15:40 - 17:20STL  Lambert-St Louis-SIN Singapore Changi
35h 40m1 stop Frankfurt am Main
Lufthansa Logo
23:45 - 13:45SIN  Singapore Changi-STL Lambert-St Louis
28h 00m2 stops Munich Franz Josef Strauss Frankfurt am Main
S$ 1,559Lufthansa
3+ days ago
Tue, 16 Mar - Sun, 21 Mar
Cathay Pacific Logo
07:31 - 05:40STL  Lambert-St Louis-SIN Singapore Changi
33h 09m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
16:45 - 23:11SIN  Singapore Changi-STL Lambert-St Louis
43h 26m2 stops Hong Kong Intl Dallas/Fort Worth
S$ 1,583Cathay Pacific
3+ days ago
Sun, 6 Dec - Tue, 22 Dec
Lufthansa Logo
15:40 - 06:50STL  Lambert-St Louis-SIN Singapore Changi
25h 10m2 stops Frankfurt am Main Munich Franz Josef Strauss
Lufthansa Logo
23:45 - 13:45SIN  Singapore Changi-STL Lambert-St Louis
28h 00m2 stops Munich Franz Josef Strauss Frankfurt am Main
S$ 1,588Lufthansa
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Cathay Pacific Logo
06:01 - 00:20STL  Lambert-St Louis-SIN Singapore Changi
28h 19m2 stops Los Angeles Hong Kong Intl
Cathay Pacific Logo
07:30 - 20:32SIN  Singapore Changi-STL Lambert-St Louis
27h 02m2 stops Hong Kong Intl Chicago O'Hare Intl
S$ 1,590Cathay Pacific
22 hours ago
Thu, 15 Apr - Mon, 19 Apr
Cathay Pacific Logo
12:27 - 05:30STL  Lambert-St Louis-SIN Singapore Changi
28h 03m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
16:05 - 23:44SIN  Singapore Changi-STL Lambert-St Louis
44h 39m2 stops Hong Kong Intl Seattle/Tacoma Intl
S$ 1,597Cathay Pacific
1 day ago
Wed, 18 Nov - Wed, 25 Nov
Cathay Pacific Logo
06:00 - 11:50STL  Lambert-St Louis-SIN Singapore Changi
39h 50m2 stops Seattle/Tacoma Intl Hong Kong Intl
Cathay Pacific Logo
07:30 - 23:59SIN  Singapore Changi-STL Lambert-St Louis
30h 29m2 stops Hong Kong Intl Seattle/Tacoma Intl
S$ 1,634Cathay Pacific
3+ days ago
Wed, 18 Nov - Wed, 25 Nov
United Airlines Logo
07:30 - 08:00STL  Lambert-St Louis-SIN Singapore Changi
34h 30m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
10:10 - 18:05SIN  Singapore Changi-STL Lambert-St Louis
21h 55m1 stop San Francisco
S$ 1,758United Airlines
4 hours ago
Sun, 6 Dec - Tue, 22 Dec
Multiple Airlines Logo
06:04 - 00:50STL  Lambert-St Louis-SIN Singapore Changi
28h 46m2 stops Seattle/Tacoma Intl Tokyo Narita
Multiple Airlines Logo
15:15 - 10:53SIN  Singapore Changi-STL Lambert-St Louis
33h 38m3 stops Xiamen Gaoqi Intl Los Angeles Atlanta Hartsfield-Jackson
S$ 1,968Multiple Airlines
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Multiple Airlines Logo
15:54 - 17:45STL  Lambert-St Louis-SIN Singapore Changi
35h 51m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
14:45 - 14:56SIN  Singapore Changi-STL Lambert-St Louis
38h 11m2 stops Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl
S$ 1,981Multiple Airlines
22 hours ago
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 with more confidence.

How much is a return flight from St. Louis to Singapore?

Return flights from St. Louis to Singapore typically range from S$ 1,584 to S$ 2,049. The lowest price found in the past 5 days was S$ 1,545 on Lufthansa.

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

•October is the cheapest month to fly from St. Louis to Singapore at S$ 1,323 return.
•April (S$ 2,847) and December (S$ 2,703) 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

S$ 610
Beat the crowds with an average 35% drop in travellers.
The most popular month to fly with an average 41% increase in travellers.
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 return price

Your St. Louis to Singapore flight questions, answered

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

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

    A direct flight from St. Louis to Singapore takes 00m, covering 24,637 km.

  • 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?

    Return flights from St. Louis to Singapore range from S$ 1,584 to S$ 2,049, with an average of S$ 1,856 over the past 12 months. Anything below S$ 1,584 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 S$ 673, which is 31% below the typical average for this route.

  • Which car hire options are available at Singapore Changi Airport (SIN)?

    Singapore Changi Airport (SIN) hosts 5 major car rental companies, with daily rates starting from around S$ 136 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 S$ 1,646 return on average, while Sunday is the most expensive at S$ 3,467, a difference of S$ 1,821.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time of 22h 24m, compared to 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 Sentosa, North Bridge Road, and Marina Square. 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 S$ 1,646, which is about S$ 1,821 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 S$ 1,323 return in that month – typically S$ 1,524 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
    • Changi Transit Hotel Terminal 1
    • The Haven by Jetquay

More options for your flight from St. Louis to Singapore

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

Car rentals in Singapore
Hotels in Singapore