STL - SIN

$713 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 11/21. 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

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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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, Nov 26 - Wed, Dec 3
Cathay Pacific Logo
7:00 am - 11:55 amSTL-SIN
38h 55m2 stops
Cathay Pacific Logo
7:40 am - 11:57 pmSIN-STL
30h 17m2 stops
$1,026Cathay Pacific
Find Deal
Wed, Nov 12 - Thu, Nov 20
Cathay Pacific Logo
7:00 am - 5:40 amSTL-SIN
32h 40m2 stops
Cathay Pacific Logo
1:25 am - 10:34 pmSIN-STL
35h 09m2 stops
$1,076Cathay Pacific
Find Deal
Wed, Nov 26 - Wed, Dec 3
United Airlines Logo
3:14 pm - 8:00 amSTL-SIN
26h 46m2 stops
United Airlines Logo
10:10 am - 4:27 pmSIN-STL
20h 17m1 stop
$1,129United Airlines
Find Deal
Thu, Feb 19 - Sun, Feb 22
Multiple Airlines Logo
2:55 pm - 9:35 amSTL-SIN
28h 40m2 stops
Multiple Airlines Logo
8:15 pm - 5:56 pmSIN-STL
35h 41m2 stops
$1,149Multiple Airlines
Find Deal
Wed, Nov 12 - Fri, Nov 21
Multiple Airlines Logo
7:00 am - 12:25 amSTL-SIN
27h 25m2 stops
Multiple Airlines Logo
7:40 am - 12:02 amSIN-STL
30h 22m2 stops
$1,153Multiple Airlines
Find Deal
Wed, Nov 12 - Fri, Nov 21
United Airlines Logo
5:29 pm - 8:00 amSTL-SIN
24h 31m1 stop
United Airlines Logo
10:10 am - 9:54 pmSIN-STL
25h 44m2 stops
$1,179United Airlines
Find Deal
Thu, Feb 19 - Sat, Feb 21
China Airlines Logo
2:55 pm - 1:05 pmSTL-SIN
32h 10m2 stops
China Airlines Logo
2:00 am - 1:52 pmSIN-STL
49h 52m2 stops
$1,277China Airlines
Find Deal
Fri, Jan 2 - Tue, Jan 20
Qatar Airways Logo
2:06 pm - 8:45 amSTL-SIN
28h 39m2 stops
Qatar Airways Logo
8:15 pm - 2:43 pmSIN-STL
32h 28m2 stops
$1,494Qatar Airways
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
$1,511Qatar Airways
Find Deal
Sun, Nov 9 - Wed, Nov 19
China Airlines Logo
7:00 am - 12:40 amSTL-SIN
51h 40m2 stops
China Airlines Logo
2:00 am - 3:19 pmSIN-STL
51h 19m2 stops
$5,790China Airlines
Find Deal

Everything you should know

Top airlines
Cathay Pacific
Cheapest • from $1,026 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$1,026
Typical prices: $1,331-$1,682
Cathay Pacific
Wed 11/26Wed 12/3
STL - SIN • 2 stops
Cheapest one-way
$713
Multiple Airlines
Fri 11/21
STL - SIN • 3 stops
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!
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 ($1,026) and United Airlines ($1,129).

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 $1,094.

Good to know

Low seasonFebruary
Cheapest flight$713
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

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 $713 for a one-way ticket and $1,026 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 8970 reviews
8.1Crew
7.3Comfort
7.7Boarding
6.6Food
7.1Entertainment
Airline reviews

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

8.0 ExcellentJessica, Oct 2025DEN - TUS
Read more United Airlines reviews

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

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.

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

Information on your arrival and departure airports

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