$783 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 12/28. 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

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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

Fri, Jan 16 - Fri, Jan 30
Cathay Pacific Logo
11:06 am - 5:40 amSTL-SIN
28h 34m2 stops
Cathay Pacific Logo
1:25 am - 11:59 pmSIN-STL
36h 34m2 stops
$1,127Cathay Pacific
Find Deal
Sun, Oct 19 - Thu, Oct 23
Cathay Pacific Logo
6:39 am - 11:45 amSTL-SIN
40h 06m2 stops
Cathay Pacific Logo
1:50 am - 7:09 pmSIN-STL
30h 19m2 stops
$1,207Cathay Pacific
Find Deal
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
11:20 am - 6:55 amSTL-SIN
29h 35m2 stops
United Airlines Logo
10:20 pm - 5:11 amSIN-STL
20h 51m1 stop
$1,234United Airlines
Find Deal
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
11:20 am - 6:55 amSTL-SIN
29h 35m2 stops
United Airlines Logo
10:20 pm - 5:11 amSIN-STL
20h 51m1 stop
$1,235United Airlines
Find Deal
Thu, Jan 1 - Tue, Jan 20
Cathay Pacific Logo
9:08 am - 4:50 pmSTL-SIN
41h 42m2 stops
Cathay Pacific Logo
7:40 am - 11:59 pmSIN-STL
30h 19m2 stops
$1,242Cathay Pacific
Find Deal
Thu, Jan 1 - Mon, Jan 19
China Airlines Logo
5:26 pm - 1:05 pmSTL-SIN
29h 39m2 stops
China Airlines Logo
2:00 am - 1:54 pmSIN-STL
49h 54m2 stops
$1,357China Airlines
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Thu, Jan 1 - Mon, Jan 19
China Airlines Logo
5:26 pm - 1:05 pmSTL-SIN
29h 39m2 stops
China Airlines Logo
2:00 am - 1:54 pmSIN-STL
49h 54m2 stops
$1,445China Airlines
Find Deal
Sat, Nov 22 - Sat, Nov 29
Air Canada Logo
4:05 pm - 7:00 amSTL-SIN
48h 55m2 stops
Air Canada Logo
8:50 am - 4:28 pmSIN-STL
21h 38m2 stops
$1,466Air Canada
Find Deal
Fri, Jan 2 - Mon, Jan 19
Qatar Airways Logo
2:06 pm - 8:45 amSTL-SIN
28h 39m2 stops
Qatar Airways Logo
3:15 am - 2:43 pmSIN-STL
49h 28m2 stops
$1,496Qatar Airways
Find Deal
Fri, Jan 2 - Tue, Jan 20
Qatar Airways Logo
9:08 am - 8:45 amSTL-SIN
33h 37m2 stops
Qatar Airways Logo
10:15 am - 2:43 pmSIN-STL
42h 28m2 stops
$1,497Qatar Airways
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 ($1,127) and United Airlines ($1,234).

Good to know

Low seasonFebruary
Cheapest flight$783
Best time to beat the crowds with an average 15% 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 8968 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

6.0 GoodJack, Oct 2025EWR - OPO
Read more United Airlines reviews

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

The flight attendants were rude. Seemed like they didn’t want to be there. Except for one girl that was really nice. Seats are sooooo uncomfortable. They give you a piece of paper and a thin cushion for a pillow and blanket that does nothing. Airlines have gone way downhill, especially United international flights. Food was disguting. Definitely flying ANA next time.

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

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