STL - SIN

$932 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 4/8. 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.
1 adult
1 adult, Economy, 0 bags

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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$932
Cathay Pacific
Wed 4/8Tue 4/14
STL - SIN • 2 stops
Cheapest one-way
$2,576
Multiple Airlines
Fri 3/13
STL - SIN • 3 stops
Top airlines
Cathay Pacific
Cheapest • from $932 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Singapore. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
San Francisco (SFO)
Cheapest • Avg $1,635 (round-trip)
San Francisco (SFO)
Shortest trip • 24h 25m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
Booking Insights
Flight Deals

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

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

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

Wed, Apr 8 - Tue, Apr 14
Cathay Pacific Logo
6:21 am - 12:45 am
STL
-
SIN
29h 24m
2 stops
Cathay Pacific Logo
1:45 am - 11:57 pm
SIN
-
STL
35h 12m
2 stops
$932Cathay Pacific
Tue, Apr 7 - Tue, Apr 14
Multiple Airlines Logo
6:21 am - 3:40 pm
STL
-
SIN
44h 19m
2 stops
Multiple Airlines Logo
7:20 am - 11:57 pm
SIN
-
STL
29h 37m
2 stops
$978Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Air Canada Logo
2:40 pm - 5:15 am
STL
-
SIN
25h 35m
2 stops
Air Canada Logo
7:00 am - 6:27 pm
SIN
-
STL
48h 27m
2 stops
$1,029Air Canada
Wed, Apr 1 - Tue, Apr 7
Qatar Airways Logo
2:29 pm - 8:50 am
STL
-
SIN
29h 21m
2 stops
Qatar Airways Logo
3:15 am - 7:33 pm
SIN
-
STL
29h 18m
2 stops
$1,152Qatar Airways
Mon, May 11 - Mon, May 18
Cathay Pacific Logo
6:21 am - 11:45 am
STL
-
SIN
40h 24m
2 stops
Cathay Pacific Logo
6:00 pm - 11:59 pm
SIN
-
STL
42h 59m
2 stops
$1,168Cathay Pacific
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
6:30 am - 6:45 am
STL
-
SIN
35h 15m
2 stops
United Airlines Logo
9:00 am - 6:24 pm
SIN
-
STL
22h 24m
1 stop
$1,181United Airlines
Mon, Apr 6 - Sun, Apr 12
Qatar Airways Logo
7:00 am - 8:50 am
STL
-
SIN
36h 50m
2 stops
Qatar Airways Logo
3:15 am - 11:46 pm
SIN
-
STL
33h 31m
2 stops
$1,199Qatar Airways
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
7:00 am - 5:35 pm
STL
-
SIN
45h 35m
1 stop
Multiple Airlines Logo
7:20 am - 11:59 pm
SIN
-
STL
29h 39m
2 stops
$1,216Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
7:00 am - 5:35 pm
STL
-
SIN
45h 35m
1 stop
Multiple Airlines Logo
2:00 pm - 11:59 pm
SIN
-
STL
22h 59m
2 stops
$1,241Multiple Airlines
Mon, Apr 6 - Mon, Apr 13
Multiple Airlines Logo
4:20 pm - 5:35 pm
STL
-
SIN
36h 15m
1 stop
Multiple Airlines Logo
9:45 am - 11:59 pm
SIN
-
STL
51h 14m
2 stops
$1,243Multiple Airlines
Booking Insights

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.

Which airlines provide the cheapest flights from St. Louis to Singapore?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Singapore were found on Cathay Pacific ($932) and Air Canada ($1,029).

Find deals

Good to know

Cheapest flight$932
Most popular time to fly and prices are also 11% lower on average.
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 $2,576 for a one-way ticket and $932 for a round-trip.

  • 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 is the only airline alliance operating flights between St. Louis and Singapore.

  • 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.

Reviews of the 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 9341 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

8.0 ExcellentAnonymous, Feb 2026
SFO - HKG
Read more United Airlines reviews

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

it was a very short flight so my expectations were low.

As great a red-eye flight as red-eye flights can be.

Once boarding started it was pretty quick. Food was inedible; cold and salty..

Entertainment kept turning itself off. Gave up on watching a movie.

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

Information on your arrival and departure airports

St. Louis (STL)
Singapore (SIN)