$1,016 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 1/20. 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

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.

Flight Deals
Booking Insights
Flight Deals

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

Tue, Jan 20 - Tue, Jan 27
Cathay Pacific Logo
11:05 am - 5:40 amSTL-SIN
28h 35m2 stops
Cathay Pacific Logo
7:40 am - 10:59 pmSIN-STL
29h 19m2 stops
$1,016Cathay Pacific
Find Deal
Tue, Jan 20 - Tue, Jan 27
Cathay Pacific Logo
11:05 am - 5:40 amSTL-SIN
28h 35m2 stops
Cathay Pacific Logo
10:00 am - 10:59 pmSIN-STL
26h 59m2 stops
$1,017Cathay Pacific
Find Deal
Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
5:00 pm - 8:00 amSTL-SIN
25h 00m1 stop
United Airlines Logo
10:10 am - 10:58 pmSIN-STL
26h 48m2 stops
$1,026United Airlines
Find Deal
Thu, Jan 29 - Mon, Feb 2
Cathay Pacific Logo
7:04 am - 1:05 pmSTL-SIN
40h 01m2 stops
Cathay Pacific Logo
6:00 pm - 6:16 pmSIN-STL
38h 16m2 stops
$1,049Cathay Pacific
Find Deal
Tue, Feb 10 - Sun, Mar 1
Cathay Pacific Logo
7:04 am - 11:55 amSTL-SIN
38h 51m2 stops
Cathay Pacific Logo
8:15 pm - 11:48 pmSIN-STL
41h 33m2 stops
$1,081Cathay Pacific
Find Deal
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
5:00 pm - 8:00 amSTL-SIN
25h 00m1 stop
United Airlines Logo
10:20 pm - 5:11 amSIN-STL
20h 51m1 stop
$1,106United Airlines
Find Deal
Fri, Jan 16 - Sat, Jan 31
Multiple Airlines Logo
11:05 am - 5:40 amSTL-SIN
28h 35m2 stops
Multiple Airlines Logo
2:05 pm - 11:59 pmSIN-STL
23h 54m2 stops
$1,110Multiple Airlines
Find Deal
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
1:15 pm - 8:00 amSTL-SIN
28h 45m2 stops
United Airlines Logo
10:10 am - 10:00 pmSIN-STL
25h 50m2 stops
$1,111United Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 30
Cathay Pacific Logo
11:05 am - 5:40 amSTL-SIN
28h 35m2 stops
Cathay Pacific Logo
1:25 am - 11:59 pmSIN-STL
36h 34m2 stops
$1,117Cathay Pacific
Find Deal
Thu, Jan 29 - Sun, Feb 1
Cathay Pacific Logo
7:04 am - 12:25 amSTL-SIN
27h 21m2 stops
Cathay Pacific Logo
1:25 am - 10:59 pmSIN-STL
35h 34m2 stops
$1,124Cathay Pacific
Find Deal
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 ($1,016) and United Airlines ($1,026).

Find deals

Good to know

Low seasonMarch
Cheapest flight$1,016
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 12% 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.

  • What is the cheapest time of day to fly to Singapore?

    The cheapest time of day to fly to Singapore is generally at night, when round-trip flights cost $1,420 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to Singapore is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,572.

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 9050 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
Airline reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

6.0 GoodAnonymous, Nov 2025IAH - MEX
Read more United Airlines reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

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

Information on your arrival and departure airports

St. Louis (STL)