RM 3,912 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 1/2. 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, 1 Feb - Sun, 8 Feb
United Airlines Logo
17:00 - 13:55
STL
-
KUL
54h 55m2 stops
United Airlines Logo
14:15 - 22:58
KUL
-
STL
46h 43m2 stops
RM 3,912United Airlines
Thu, 22 Jan - Mon, 26 Jan
United Airlines Logo
08:05 - 06:45
STL
-
KUL
32h 40m2 stops
United Airlines Logo
14:15 - 12:29
KUL
-
STL
36h 14m2 stops
RM 4,226United Airlines
Mon, 9 Feb - Sat, 28 Feb
United Airlines Logo
09:57 - 00:15
STL
-
KUL
48h 18m2 stops
United Airlines Logo
14:15 - 21:05
KUL
-
STL
44h 50m2 stops
RM 4,740United Airlines
Mon, 9 Feb - Sat, 28 Feb
Cathay Pacific Logo
07:04 - 12:35
STL
-
KUL
39h 31m2 stops
Cathay Pacific Logo
13:35 - 23:48
KUL
-
STL
48h 13m2 stops
RM 5,164Cathay Pacific
Mon, 1 Jun - Wed, 1 Jul
United Airlines Logo
19:06 - 13:50
STL
-
KUL
29h 44m2 stops
United Airlines Logo
16:55 - 15:21
KUL
-
STL
35h 26m3 stops
RM 5,518United Airlines
Sat, 14 Mar - Sat, 28 Mar
Qatar Airways Logo
18:50 - 14:40
STL
-
KUL
30h 50m2 stops
Qatar Airways Logo
19:55 - 17:13
KUL
-
STL
34h 18m2 stops
RM 5,653Qatar Airways
Mon, 1 Jun - Wed, 1 Jul
ANA Logo
08:00 - 06:00
STL
-
KUL
33h 00m2 stops
ANA Logo
16:55 - 16:26
KUL
-
STL
36h 31m2 stops
RM 6,231ANA
Sun, 1 Feb - Sun, 8 Feb
Multiple Airlines Logo
12:01 - 13:55
STL
-
KUL
35h 54m2 stops
Multiple Airlines Logo
23:05 - 18:14
KUL
-
STL
33h 09m3 stops
RM 7,389Multiple Airlines
Sun, 1 Feb - Sun, 8 Feb
Multiple Airlines Logo
16:05 - 12:35
STL
-
KUL
30h 30m3 stops
Multiple Airlines Logo
23:05 - 18:14
KUL
-
STL
33h 09m3 stops
RM 8,917Multiple Airlines
Sat, 14 Mar - Sat, 28 Mar
Multiple Airlines Logo
16:05 - 07:15
STL
-
KUL
26h 10m2 stops
Multiple Airlines Logo
22:40 - 18:03
KUL
-
STL
32h 23m3 stops
RM 9,414Multiple Airlines
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 4,499, 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 4,471 (return) on average. On the other hand, the most expensive months are May and June, when the average cost of return tickets is RM 7,862 and RM 7,788 respectively.

Good to know

Low seasonAugust
Cheapest flightRM 3,912
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 9097 reviews
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

2.0 MediocreDerrick, Dec 2025
MCO - EWR
Read more United Airlines reviews

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports