STL - SIN

$622 Find Cheap Flights from St. Louis to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Singapore departing on 4/27. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$1,239
Typical prices: $1,623-$1,408
Qatar Airways
Sun 5/3Tue 5/19
STL - SIN • 2 stops
Cheapest one-way
$622
Air Canada
Mon 4/27
STL - SIN • 2 stops
Top airlines
Cheapest • from $1,239 (round-trip)
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
Cheapest • Avg $1,512 (round-trip)
Shortest trip • 24h 07m (one-way)
Insights
Insights
Insights
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
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

Sun, May 3 - Tue, May 19
Qatar Airways Logo
2:33 pm - 4:15 pm
STL
-
SIN
36h 42m
2 stops
Qatar Airways Logo
7:40 pm - 11:54 pm
SIN
-
STL
41h 14m
2 stops
$1,239Qatar Airways
Tue, May 5 - Tue, May 19
Qatar Airways Logo
12:27 pm - 4:15 pm
STL
-
SIN
38h 48m
2 stops
Qatar Airways Logo
7:40 pm - 11:54 pm
SIN
-
STL
41h 14m
2 stops
$1,266Qatar Airways
Mon, May 4 - Sun, May 17
Qatar Airways Logo
7:00 am - 4:15 pm
STL
-
SIN
44h 15m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,275Qatar Airways
Wed, May 6 - Fri, May 22
Qatar Airways Logo
7:00 am - 9:20 am
STL
-
SIN
37h 20m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,276Qatar Airways
Thu, Apr 30 - Tue, May 19
Qatar Airways Logo
12:27 pm - 4:15 pm
STL
-
SIN
38h 48m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,280Qatar Airways
Wed, May 13 - Tue, May 19
Qatar Airways Logo
6:00 am - 9:20 am
STL
-
SIN
38h 20m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,289Qatar Airways
Sat, May 2 - Tue, May 19
Qatar Airways Logo
7:12 am - 9:20 am
STL
-
SIN
37h 08m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,306Qatar Airways
Mon, May 4 - Sun, May 17
Qatar Airways Logo
7:00 am - 4:15 pm
STL
-
SIN
44h 15m
2 stops
Qatar Airways Logo
7:40 pm - 11:54 pm
SIN
-
STL
41h 14m
2 stops
$1,315Qatar Airways
Thu, Apr 30 - Fri, May 15
Qatar Airways Logo
12:27 pm - 4:15 pm
STL
-
SIN
38h 48m
2 stops
Qatar Airways Logo
1:05 am - 11:54 pm
SIN
-
STL
35h 49m
2 stops
$1,320Qatar Airways
Tue, May 5 - Wed, May 20
Qatar Airways Logo
12:27 pm - 4:15 pm
STL
-
SIN
38h 48m
2 stops
Qatar Airways Logo
1:05 am - 9:42 pm
SIN
-
STL
33h 37m
2 stops
$1,327Qatar Airways
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.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Singapore departing in May.

Good to know

Cheapest flight$622
Most popular time to fly and prices are also 18% 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 $622 for a one-way ticket and $1,239 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 9554 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

10.0 ExcellentCorrine, Apr 2026
MCW - ORD
Read more United Airlines reviews

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

All good flight was 35 minutes early when arriving in Edinburgh

Flights were on time actually early service was good and crew cheerful

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

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

Information on your arrival and departure airports