RM 4,418 Find Cheap Flights from St. Louis to Southeast Asia

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Southeast Asia departing on 10/5. 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 Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Southeast Asia, 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 Southeast Asia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from St. Louis to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from St. Louis to Southeast Asia 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 return flight deals from St. Louis to Southeast Asia

Sun, 10 May - Sun, 17 May
Multiple Airlines Logo
09:10 - 08:25
STL
-
KUL
34h 15m
2 stops
Multiple Airlines Logo
21:55 - 19:30
KUL
-
STL
34h 35m
2 stops
RM 4,418Multiple Airlines
Sat, 9 May - Sat, 16 May
Multiple Airlines Logo
08:00 - 08:25
STL
-
KUL
35h 25m
2 stops
Multiple Airlines Logo
21:55 - 18:04
KUL
-
STL
33h 09m
2 stops
RM 4,549Multiple Airlines
Sat, 9 May - Sat, 16 May
Multiple Airlines Logo
05:51 - 08:25
STL
-
KUL
37h 34m
2 stops
Multiple Airlines Logo
21:55 - 18:04
KUL
-
STL
33h 09m
2 stops
RM 4,752Multiple Airlines
Wed, 15 Apr - Mon, 22 Jun
Cathay Pacific Logo
06:21 - 01:30
STL
-
KUL
30h 09m
2 stops
Cathay Pacific Logo
09:10 - 21:37
KUL
-
STL
25h 27m
2 stops
RM 5,105Cathay Pacific
Tue, 14 Apr - Fri, 26 Jun
Cathay Pacific Logo
06:21 - 01:30
STL
-
KUL
30h 09m
2 stops
Cathay Pacific Logo
08:10 - 21:37
KUL
-
STL
26h 27m
2 stops
RM 5,192Cathay Pacific
Sat, 9 May - Sat, 16 May
Multiple Airlines Logo
05:51 - 08:25
STL
-
KUL
37h 34m
2 stops
Multiple Airlines Logo
21:55 - 14:03
KUL
-
STL
29h 08m
2 stops
RM 5,212Multiple Airlines
Tue, 14 Apr - Mon, 22 Jun
Cathay Pacific Logo
06:21 - 01:30
STL
-
KUL
30h 09m
2 stops
Cathay Pacific Logo
09:10 - 21:37
KUL
-
STL
25h 27m
2 stops
RM 5,259Cathay Pacific
Mon, 13 Apr - Mon, 22 Jun
Cathay Pacific Logo
18:11 - 18:30
STL
-
KUL
35h 19m
2 stops
Cathay Pacific Logo
09:10 - 21:37
KUL
-
STL
25h 27m
2 stops
RM 5,358Cathay Pacific
Tue, 14 Apr - Thu, 25 Jun
Cathay Pacific Logo
06:21 - 01:30
STL
-
KUL
30h 09m
2 stops
Cathay Pacific Logo
09:10 - 21:37
KUL
-
STL
25h 27m
2 stops
RM 5,390Cathay Pacific
Mon, 13 Apr - Fri, 26 Jun
Cathay Pacific Logo
18:11 - 18:30
STL
-
KUL
35h 19m
2 stops
Cathay Pacific Logo
08:10 - 21:37
KUL
-
STL
26h 27m
2 stops
RM 5,446Cathay Pacific
Booking Insights

KAYAK's insights & trends for St. Louis to Southeast Asia flights

Get data-powered insights and trends into flights from St. Louis to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

Can I save money by flying with a stopover from St. Louis to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of RM 4,379, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Southeast Asia is December, when tickets cost RM 4,351 (return) on average. On the other hand, the most expensive months are May and June, when the average cost of return tickets is RM 7,076 and RM 6,290 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flightRM 4,418
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from St. Louis to Kuala Lumpur

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from St. Louis to Southeast Asia?

    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 Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from St. Louis to Southeast Asia 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 Southeast Asia?

    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 Southeast Asia 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 Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Southeast Asia. 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 Southeast Asia? 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 9509 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

The business class seat is exceptional. I wish the food is more palatable.

8.0 ExcellentAnonymous, Mar 2026
LAX - HND
Read more United Airlines reviews

The business class seat is exceptional. I wish the food is more palatable.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Overall, the flight was good. Lounge access should be with all business class tickets.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

St. Louis (STL)