$590 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 5/10. 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

Tue, Sep 22 - Sat, Sep 26
Air Canada Logo
8:55 am - 5:15 am
STL
-
SIN
31h 20m
2 stops
Air Canada Logo
7:00 am - 2:00 pm
SIN
-
STL
44h 00m
2 stops
$1,124Air Canada
Wed, Oct 7 - Mon, Oct 12
Qatar Airways Logo
7:00 am - 8:50 am
STL
-
SIN
36h 50m
2 stops
Qatar Airways Logo
7:40 pm - 11:59 pm
SIN
-
STL
41h 19m
2 stops
$1,166Qatar Airways
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
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 Qatar Airways ($1,306) and United Airlines ($1,530).

Good to know

Cheapest flight$590
Most popular time to fly and prices are also 18% 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 9574 reviews
7.3Comfort
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

10.0 ExcellentDenise and Scott, Apr 2026
IAD - MUC
Read more United Airlines reviews

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

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.

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

Information on your arrival and departure airports