STL - SIN

$1,003 Find Cheap Flights from St. Louis to Singapore

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Singapore departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Singapore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Singapore, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Singapore, as well as popular online travel agencies
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Flights Deals

Cheap Flights from St. Louis to Singapore

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Singapore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Singapore.
Discover the best prices for you by selecting your travel dates on KAYAK.
Air Canada Logo
1:30 pm - 7:05 amSTL-SIN
28h 35m2 stops
Air Canada Logo
9:10 am - 7:57 pmSIN-STL
47h 47m2 stops
$1,003Air Canada
Find Deal
Thu, Sep 18 - Sun, Oct 5
Air Canada Logo
9:15 am - 7:05 amSTL-SIN
32h 50m2 stops
Air Canada Logo
9:10 am - 3:18 pmSIN-STL
43h 08m2 stops
$1,016Air Canada
Find Deal
Tue, Sep 2 - Tue, Sep 16
United Airlines Logo
5:49 pm - 6:15 amSTL-SIN
23h 26m1 stop
United Airlines Logo
8:45 am - 4:53 pmSIN-STL
21h 08m1 stop
$1,094United Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 16
United Airlines Logo
4:40 pm - 6:15 amSTL-SIN
24h 35m2 stops
United Airlines Logo
8:45 am - 8:46 pmSIN-STL
25h 01m2 stops
$1,098United Airlines
Find Deal
Mon, Sep 1 - Wed, Sep 17
Delta Logo
8:55 am - 5:00 amSTL-SIN
31h 05m2 stops
Delta Logo
1:10 am - 1:20 pmSIN-STL
25h 10m2 stops
$1,108Delta
Find Deal
Mon, Sep 1 - Sun, Sep 14
Japan Airlines Logo
6:00 am - 12:20 amSTL-SIN
29h 20m2 stops
Japan Airlines Logo
1:55 am - 10:59 pmSIN-STL
34h 04m2 stops
$1,239Japan Airlines
Find Deal
Thu, Sep 18 - Sat, Oct 4
Cathay Pacific Logo
6:52 am - 11:45 amSTL-SIN
39h 53m2 stops
Cathay Pacific Logo
1:50 am - 9:52 pmSIN-STL
33h 02m2 stops
$1,355Cathay Pacific
Find Deal
Sun, May 11 - Tue, May 20
Cathay Pacific Logo
6:52 am - 12:50 amSTL-SIN
28h 58m2 stops
Cathay Pacific Logo
1:50 am - 9:52 pmSIN-STL
33h 02m2 stops
$1,863Cathay Pacific
Find Deal
Wed, May 28 - Tue, Jun 3
Japan Airlines Logo
7:30 am - 6:10 amSTL-SIN
33h 40m2 stops
Japan Airlines Logo
9:50 pm - 12:48 pmSIN-STL
27h 58m2 stops
$1,928Japan Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 23
Delta Logo
6:30 am - 5:00 amSTL-SIN
33h 30m2 stops
Delta Logo
1:10 am - 11:39 pmSIN-STL
35h 29m2 stops
$2,728Delta
Find Deal
Tue, Sep 9 - Mon, Sep 22
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KAYAK's insights & trends for St. Louis to Singapore flights

Get data-powered insights and trends into flights from St. Louis to Singapore to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Singapore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Singapore is November, where tickets cost $1,266 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is $1,948 and $1,913 respectively.

Good to know

Low seasonApril
High seasonJune
Cheapest flight$1,003
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 10% 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.

FAQs for booking flights from St. Louis to Singapore

  • What is the cheapest flight from St. Louis to Singapore?

    In the last 3 days, the lowest price for a flight from St. Louis to Singapore was $1,003 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Singapore?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Singapore.

  • Which aircraft models fly most regularly from St. Louis to Singapore?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Singapore?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Singapore, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from St. Louis to Singapore?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Singapore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Singapore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Singapore from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Singapore?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Singapore with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SIN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Singapore?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Singapore from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from St. Louis to Singapore

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Singapore. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Singapore? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8696 reviews
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

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

Information on your arrival and departure airports

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