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S$ 866 Find Cheap Flights to St. Louis – Compare and Save

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Everything you should know

Cheapest return flight
S$ 1,265
Typical prices: S$ 1,576-S$ 2,011
Japan Airlines
Sun 21-10Wed 24-10
SIN - STL • 2 stops
Cheapest one-way flight
S$ 866
Typical prices: S$ 837-S$ 1,127
Multiple Airlines
Wed 21-11
SIN - STL • 2 stops
Top airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
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Flight Deals

Cheap Flights to St. Louis

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to St. Louis

Wed, 21 Oct - Sat, 24 Oct
Japan Airlines Logo
08:05 - 23:59SIN  Singapore Changi-STL Lambert-St Louis
28h 54m2 stops Tokyo Narita Seattle/Tacoma Intl
Japan Airlines Logo
11:31 - 00:50STL  Lambert-St Louis-SIN Singapore Changi
48h 19m2 stops Chicago O'Hare Intl Tokyo Narita
S$ 1,265Japan Airlines
Tue, 20 Oct - Sat, 24 Oct
Multiple Airlines Logo
02:00 - 14:45SIN  Singapore Changi-STL Lambert-St Louis
49h 45m3 stops Taipei City Taiwan Taoyuan Intl Phoenix Sky Harbor Intl Dallas Love Field
Multiple Airlines Logo
16:42 - 13:05STL  Lambert-St Louis-SIN Singapore Changi
31h 23m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl
S$ 1,598Multiple Airlines
Wed, 21 Oct - Sat, 24 Oct
Multiple Airlines Logo
07:30 - 23:59SIN  Singapore Changi-STL Lambert-St Louis
29h 29m2 stops Incheon Intl Seattle/Tacoma Intl
Multiple Airlines Logo
16:42 - 17:45STL  Lambert-St Louis-SIN Singapore Changi
36h 03m1 stop Seattle/Tacoma Intl
S$ 1,979Multiple Airlines
Wed, 21 Oct - Sat, 24 Oct
Alaska Airlines Logo
08:05 - 23:59SIN  Singapore Changi-STL Lambert-St Louis
28h 54m2 stops Tokyo Narita Seattle/Tacoma Intl
Alaska Airlines Logo
16:42 - 00:50STL  Lambert-St Louis-SIN Singapore Changi
43h 08m2 stops Seattle/Tacoma Intl Tokyo Narita
S$ 2,143Alaska Airlines
Wed, 21 Oct - Sat, 24 Oct
United Airlines Logo
20:35 - 18:43SIN  Singapore Changi-STL Lambert-St Louis
35h 08m1 stop San Francisco
United Airlines Logo
07:08 - 20:15STL  Lambert-St Louis-SIN Singapore Changi
24h 07m1 stop San Francisco
S$ 2,242United Airlines
Wed, 21 Oct - Sat, 24 Oct
United Airlines Logo
20:35 - 22:30SIN  Singapore Changi-STL Lambert-St Louis
38h 55m2 stops San Francisco Houston George Bush Intcntl
United Airlines Logo
07:08 - 20:15STL  Lambert-St Louis-SIN Singapore Changi
24h 07m1 stop San Francisco
S$ 2,242United Airlines
Wed, 21 Oct - Sat, 24 Oct
Multiple Airlines Logo
15:20 - 14:00SIN  Singapore Changi-STL Lambert-St Louis
35h 40m3 stops Taipei City Taiwan Taoyuan Intl Vancouver Intl Toronto Pearson Intl
Multiple Airlines Logo
12:10 - 11:15STL  Lambert-St Louis-SIN Singapore Changi
34h 05m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Bangkok Suvarnabhumi
S$ 3,348Multiple Airlines
Sat, 21 Nov - Sat, 28 Nov
Multiple Airlines Logo
22:05 - 20:17SIN  Singapore Changi-STL Lambert-St Louis
36h 12m2 stops Helsinki-Vantaa Dallas/Fort Worth
Multiple Airlines Logo
12:56 - 18:40STL  Lambert-St Louis-SIN Singapore Changi
39h 44m2 stops Dallas/Fort Worth Helsinki-Vantaa
S$ 7,580Multiple Airlines
Sat, 21 Nov - Sat, 28 Nov
Lufthansa Logo
23:55 - 13:45SIN  Singapore Changi-STL Lambert-St Louis
27h 50m1 stop Frankfurt am Main
Lufthansa Logo
13:00 - 06:50STL  Lambert-St Louis-SIN Singapore Changi
27h 50m2 stops Washington, D.C. Dulles Intl Frankfurt am Main
S$ 13,146Lufthansa
Booking Insights

Price, demand, and travel trends for flights to St. Louis

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest flight to St. Louis?

Singapore to St. Louis is the cheapest route at S$ 1,265 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to St. Louis?

On average, a return flight from Singapore to St. Louis costs S$ 1,754, based on KAYAK data over the past 12 months. Return fares from Singapore average S$ 1,754.

What is the cheapest time of day to fly to St. Louis?

Afternoon flights to St. Louis are the cheapest at S$ 1,540 return on average. Night flights are the most expensive at S$ 2,010.

What is a good deal for flights to St. Louis?

Flights under S$ 1,576 are considered a good deal. 25% of KAYAK users found return flights to St. Louis at or below these prices, with the lowest fares from:
•Singapore S$ 1,576.

Key details for flights to St. Louis

Cheapest flight

S$ 866
One-way flight from Singapore to St. Louis

When to book flights to St. Louis

Are your dates flexible? Find out the best times to travel to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to St. Louis, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to St. Louis is a good deal?

    A good deal on a flight to St. Louis is around S$ 1,576 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How far is Lambert-St Louis from St. Louis city centre?

    Lambert-St Louis is 21.1 km from St. Louis city centre.

  • What is the difference between the most popular and the most frequent airline at St. Louis?

    United Airlines operates the most flights from Singapore to St. Louis at 0 per week, while Japan Airlines is the airline most often selected by KAYAK users searching for flights from Singapore to St. Louis. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airlines should I consider for flights to St. Louis?

Your guide to booking St. Louis flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For flights to St. Louis, a good return fare is around S$ 1,576. If you find a fare below that, you're getting a strong deal.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to midday to save up to S$ 470 on a return flight. Midday flights to St. Louis average S$ 1,540 compared to S$ 2,010 for evening flights.

Reviews of the top airline flying to St. Louis

 
Need help choosing which airline to fly with to St. Louis? 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 10316 reviews
6.7Food
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

For the Singapore to CA flight, nearly 16 hours long was miserable. We sat on the tarmac for one hour to burn fuel. The flight attendant girls were mean. They would yell at people who stood up to try to stretch their legs. One time the drinks came thru and the lady judged us and made a comment about how much sugar was in apple juice when we ordered it once. She was rude and inappropriate. The entire flight was frustrating. You'd think a long haul like that the airline would try to make you comfortable. I just don't understand why the ladies were so snappy. I have never experienced rude flight attendants like that. It was the longest flight I've had to sit on before. We were not impressed. Raymond on the other hand was amazing! By far the best person working that flight!

2.0 MediocreJamie, Sept 2026
Read more United Airlines reviews

For the Singapore to CA flight, nearly 16 hours long was miserable. We sat on the tarmac for one hour to burn fuel. The flight attendant girls were mean. They would yell at people who stood up to try to stretch their legs. One time the drinks came thru and the lady judged us and made a comment about how much sugar was in apple juice when we ordered it once. She was rude and inappropriate. The entire flight was frustrating. You'd think a long haul like that the airline would try to make you comfortable. I just don't understand why the ladies were so snappy. I have never experienced rude flight attendants like that. It was the longest flight I've had to sit on before. We were not impressed. Raymond on the other hand was amazing! By far the best person working that flight!

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

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