RM 2,172 Find Cheap Flights from St. Louis to Southeast Asia

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 Southeast Asia departing on 7/3. 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

Tue, 10 Mar - Mon, 30 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
42h 04m
2 stops
United Airlines Logo
16:35 - 05:50
KUL
-
STL
26h 15m
2 stops
RM 3,761United Airlines
Thu, 5 Mar - Mon, 9 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
41h 04m
2 stops
United Airlines Logo
14:15 - 21:07
KUL
-
STL
43h 52m
2 stops
RM 4,096United Airlines
Tue, 24 Mar - Tue, 31 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
42h 04m
2 stops
United Airlines Logo
18:40 - 18:24
KUL
-
STL
36h 44m
2 stops
RM 4,104United Airlines
Mon, 9 Mar - Wed, 25 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
42h 04m
2 stops
United Airlines Logo
17:00 - 22:25
KUL
-
STL
42h 25m
2 stops
RM 4,412United Airlines
Thu, 5 Mar - Mon, 9 Mar
United Airlines Logo
06:51 - 10:20
STL
-
KUL
37h 29m
2 stops
United Airlines Logo
14:15 - 22:25
KUL
-
STL
45h 10m
2 stops
RM 4,432United Airlines
Mon, 16 Mar - Tue, 31 Mar
United Airlines Logo
06:51 - 10:20
STL
-
KUL
38h 29m
2 stops
United Airlines Logo
20:40 - 18:24
KUL
-
STL
34h 44m
2 stops
RM 4,440United Airlines
Mon, 9 Mar - Thu, 26 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
42h 04m
2 stops
United Airlines Logo
18:30 - 22:25
KUL
-
STL
40h 55m
2 stops
RM 4,455United Airlines
Fri, 1 May - Wed, 17 Jun
Multiple Airlines Logo
18:11 - 01:30
STL
-
KUL
42h 19m
2 stops
Multiple Airlines Logo
12:20 - 23:58
KUL
-
STL
48h 38m
2 stops
RM 4,578Multiple Airlines
Sun, 15 Mar - Sun, 29 Mar
United Airlines Logo
06:51 - 13:55
STL
-
KUL
42h 04m
2 stops
United Airlines Logo
20:40 - 05:50
KUL
-
STL
46h 10m
2 stops
RM 4,609United Airlines
Sun, 22 Mar - Sun, 29 Mar
Cathay Pacific Logo
18:50 - 12:35
STL
-
KUL
28h 45m
2 stops
Cathay Pacific Logo
08:10 - 22:58
KUL
-
STL
27h 48m
2 stops
RM 4,735Cathay 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 4,353, 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 4,325 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of return tickets is RM 8,256 and RM 7,673 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flightRM 2,172
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 7% 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 9257 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

10.0 ExcellentBill, Feb 2026
IAH - LAX
Read more United Airlines reviews

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

The attendant on board was amazing. She should be doing business/first international long haul.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

St. Louis (STL)