$1,092 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 3/22. 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

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Book Cheap St. Louis to Singapore Plane Tickets

 
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, Mar 22 - Sun, Mar 29
Cathay Pacific Logo
6:38 am - 12:25 am
STL
-
SIN
28h 47m2 stops
Cathay Pacific Logo
8:05 pm - 9:11 pm
SIN
-
STL
38h 06m2 stops
$1,092Cathay Pacific
Thu, Feb 19 - Thu, Feb 26
United Airlines Logo
11:25 am - 8:00 am
STL
-
SIN
30h 35m2 stops
United Airlines Logo
10:10 am - 4:44 pm
SIN
-
STL
20h 34m1 stop
$1,130United Airlines
Fri, Mar 6 - Wed, Mar 25
Multiple Airlines Logo
7:00 am - 5:45 pm
STL
-
SIN
44h 45m1 stop
Multiple Airlines Logo
3:45 pm - 3:20 pm
SIN
-
STL
36h 35m2 stops
$1,159Multiple Airlines
Fri, Mar 6 - Tue, Mar 24
Multiple Airlines Logo
7:00 am - 1:00 pm
STL
-
SIN
40h 00m2 stops
Multiple Airlines Logo
3:15 am - 11:59 pm
SIN
-
STL
33h 44m2 stops
$1,169Multiple Airlines
Thu, Jun 4 - Fri, Jun 12
Air Canada Logo
1:00 pm - 5:15 am
STL
-
SIN
27h 15m2 stops
Air Canada Logo
8:10 am - 8:05 pm
SIN
-
STL
48h 55m2 stops
$1,199Air Canada
Fri, Feb 20 - Fri, Feb 27
United Airlines Logo
6:00 am - 8:00 am
STL
-
SIN
36h 00m2 stops
United Airlines Logo
10:10 am - 4:44 pm
SIN
-
STL
20h 34m1 stop
$1,230United Airlines
Fri, Mar 6 - Wed, Mar 25
United Airlines Logo
6:51 am - 8:15 pm
STL
-
SIN
23h 24m1 stop
United Airlines Logo
10:10 am - 10:25 pm
SIN
-
STL
25h 15m1 stop
$1,419United Airlines
Thu, Jun 4 - Fri, Jun 12
Multiple Airlines Logo
7:56 pm - 5:35 pm
STL
-
SIN
32h 39m1 stop
Multiple Airlines Logo
9:00 am - 2:02 pm
SIN
-
STL
42h 02m1 stop
$1,460Multiple Airlines
Sun, Mar 22 - Sun, Mar 29
United Airlines Logo
6:51 am - 8:15 pm
STL
-
SIN
24h 24m1 stop
United Airlines Logo
8:40 pm - 5:50 am
SIN
-
STL
22h 10m1 stop
$1,475United Airlines
Thu, Feb 19 - Thu, Feb 26
Multiple Airlines Logo
7:00 am - 5:45 pm
STL
-
SIN
44h 45m1 stop
Multiple Airlines Logo
9:00 am - 11:59 pm
SIN
-
STL
28h 59m1 stop
$1,555Multiple 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 fly non-stop between St. Louis and Singapore?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Singapore.

There is just one airline that flies from St. Louis to Singapore direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Singapore (SIN) and costs $1,094.

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 ($1,092) and United Airlines ($1,130).

Find deals

Good to know

Cheapest flight$1,092
Most popular time to fly and prices are also 11% lower on average.
Flight from St. Louis to Singapore

FAQs - booking Singapore flights

  • 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 from St. Louis to Singapore 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 from St. Louis to Singapore with an airline and back with another airline.

  • 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 from St. Louis to Singapore 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

 
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 9139 reviews
7.3Comfort
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
Airline reviews

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

8.0 ExcellentMary, Jan 2026
PHX - IAH
Read more United Airlines reviews

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

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

Information on your arrival and departure airports

St. Louis (STL)