$540 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 9/6. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Southeast Asia.
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Flight Deals

Cheap Flights from St. Louis to Southeast Asia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Manila
Manila2 stops$1,004
Ho Chi Minh City
Ho Chi Minh City2 stops$1,066
Singapore
Singapore2 stops$1,592
Denpasar
Denpasar2 stops$1,250
Hanoi
Hanoi2 stops$1,071
Phuket City
Phuket City2 stops$1,214
Cebu City
Cebu City2 stops$1,148
Da Nang
Da Nang3 stops$1,728
Chiang Mai
Chiang Mai2 stops$1,338
Angeles City
Angeles City2 stops$1,256
Vientiane
Vientiane3 stops$1,924
Manila
Manila2 stops$1,004
Ho Chi Minh City
Ho Chi Minh City2 stops$1,066
Singapore
Singapore2 stops$1,592
Denpasar
Denpasar2 stops$1,250
Hanoi
Hanoi2 stops$1,071
Phuket City
Phuket City2 stops$1,214
Cebu City
Cebu City2 stops$1,148
Da Nang
Da Nang3 stops$1,728
Chiang Mai
Chiang Mai2 stops$1,338
Angeles City
Angeles City2 stops$1,256
Vientiane
Vientiane3 stops$1,924

Book Cheap St. Louis to Southeast Asia 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 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 round-trip flight deals from St. Louis to Southeast Asia

Mon, Sep 14 - Tue, Sep 29
Multiple Airlines Logo
7:44 am - 11:00 pm
STL
-
BKK
27h 16m
2 stops
Multiple Airlines Logo
9:35 pm - 2:17 pm
BKK
-
STL
28h 42m
2 stops
$998Multiple Airlines
Sun, Sep 6 - Sun, Nov 8
Multiple Airlines Logo
6:00 am - 10:35 pm
STL
-
MNL
27h 35m
2 stops
Multiple Airlines Logo
11:45 pm - 11:59 pm
MNL
-
STL
38h 14m
2 stops
$1,004Multiple Airlines
Thu, Aug 20 - Wed, Nov 18
Etihad Airways Logo
7:34 am - 11:50 pm
STL
-
BKK
28h 16m
2 stops
Etihad Airways Logo
8:50 pm - 1:17 pm
BKK
-
STL
29h 27m
2 stops
$1,031Etihad Airways
Tue, Sep 8 - Mon, Oct 12
ANA Logo
9:16 am - 9:55 pm
STL
-
SGN
24h 39m
2 stops
ANA Logo
11:15 pm - 2:17 pm
SGN
-
STL
27h 02m
2 stops
$1,066ANA
Wed, Sep 16 - Wed, Oct 7
United Airlines Logo
8:44 am - 9:55 pm
STL
-
SGN
25h 11m
2 stops
United Airlines Logo
11:15 pm - 5:01 pm
SGN
-
STL
29h 46m
2 stops
$1,069United Airlines
Thu, Aug 20 - Tue, Sep 22
United Airlines Logo
1:18 pm - 9:55 pm
STL
-
SGN
44h 37m
2 stops
United Airlines Logo
7:00 am - 4:31 pm
SGN
-
STL
21h 31m
2 stops
$1,072United Airlines
Wed, Oct 21 - Wed, Nov 18
Philippine Airlines Logo
4:40 pm - 8:00 am
STL
-
CEB
26h 20m
2 stops
Philippine Airlines Logo
5:35 am - 11:42 pm
CEB
-
STL
32h 07m
2 stops
$1,148Philippine Airlines
Wed, Sep 23 - Sat, Oct 3
Philippine Airlines Logo
3:17 pm - 8:00 am
STL
-
CEB
27h 43m
2 stops
Philippine Airlines Logo
10:30 pm - 11:02 pm
CEB
-
STL
37h 32m
2 stops
$1,208Philippine Airlines
Thu, Sep 3 - Mon, Sep 7
Cathay Pacific Logo
6:00 am - 3:00 pm
STL
-
DPS
44h 00m
2 stops
Cathay Pacific Logo
4:15 pm - 10:55 pm
DPS
-
STL
43h 40m
2 stops
$1,340Cathay Pacific
Sat, Aug 22 - Sat, Aug 29
Cathay Pacific Logo
5:19 pm - 10:50 am
STL
-
HKT
53h 31m
2 stops
Cathay Pacific Logo
11:50 am - 11:42 pm
HKT
-
STL
47h 52m
2 stops
$1,362Cathay 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 layover from St. Louis to Southeast Asia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $438, 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 August, when tickets cost $511 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $1,201 and $903 respectively.

How far in advance should I book a flight from St. Louis to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from St. Louis to Southeast Asia, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$540
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from St. Louis to Bangkok

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 travelers 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 round-trip 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 5 airlines serving 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.
8.3
Japan AirlinesOverall score based on 1806 reviews
7.7Food
7.8Entertainment
8.2Comfort
8.4Boarding
8.7Crew
Airline reviews

Horrible like always, flight was supposed to be at 11:40am, we ended up getting a different airplane at 3:25pm.

2.0 MediocreTheSiroxlife, Apr 2026
ORD - MIA
Read more Japan Airlines reviews

Horrible like always, flight was supposed to be at 11:40am, we ended up getting a different airplane at 3:25pm.

Overall, a solid flight experience. Boarding was quick and efficient, even with a full and overbooked flight. The flight crew did a great job providing attentive and friendly service throughout. I flew in economy, and while the seats were acceptable, they could definitely use more cushioning, especially for a 14-hour flight. By the end, it was quite uncomfortable to remain seated. Legroom was also limited, particularly with a bag stored under the seat and the passenger in front reclining. That said, everything else went smoothly, and I appreciated the professionalism of the crew.

The flight was delightful overall. The check-in and boarding were on smooth and on time. Amenities and staffs were elevated. However, if glasses were served instead of cups, there should be a complete premium.

Sure I would’ve liked a little more space, but it was better than economy. I bring my own food because I have food allergies it would be nice if they offered larger salads or more vegetables instead of starch it was really a good flight. I don’t wanna complain. I’m grateful to fly at all safely. Thank you to the pilots.

Flight crews are very attentive and polite. Cabin and toilets are clean. Food is above average for economy class. We missed our connecting flights because the first flight was delayed, the ground crews at Tokyo were very helpful, providing all the information and support (including cash for our train ticket) to get us to our destination. Very impressive. No wonder they are always at the top ten lists.

No food at all so it was a bit of a culture shock for international travellers with connecting domestic flights.

Excellent! So happy that the crew members were so helpful and friendly and able to understandably communicate. They’re very receptive with someone like me, with disability. I love that I did not even have to ask for luggage help like, having to place and take down my carry-on luggage in and out of the over-head compartment. Hope, help is extended to disabled passenger(s) through out class classifications they’ve bought; economy or business class it might be. As a disabled person myself, I’m truly of great appreciation of this kind of help. Means a lot !!! Thank you so very much JAL crew. You out done others on this customer service part of the trip. Please continue to do so. From now on, I’ll choose JAL as my airline whenever I have to fly to any southeast asian countries. And I will disseminate my excellent travel experience with you to others.

My only complaint is that the flight attendant that I encountered was not receptive, unhappy to help me out prompted for help with my carry-on luggage to be put up into the over-head compartment. At time of booking, I’ve informed the customer service about my medical-surgical history necessitating assistance in carrying luggage(s)/baggage(s) especially lifting over head. I know crews’ policy of doing such. But, there should be exception(s) to that rule; a consideration for disabled people.. Especially noting given the passenger’s med/surg’s history. Hope, something will come out of this survey. Thank you for your kind understanding and cooperation regarding this issue. So I can still continue flying with any airlines in the near future.

American Airlines food is horrible. Also, paid to fly JAL on all segments, but received a much lower quality. I was disappointed to learn that we would be using American Airlines on this flight, which has less comfort, entertainment, choices, and lower standard of service. Overall not satisfied.

American Airlines has horrible food. Also, since I booked a trip with JAL for all segments, I was surprised and disappointed I was on American Airlines from LAX to Haneda. I paid for JAL and received a much lower quality.

The ladies are great seats should be a little bigger!

Couple of hours delayed, we had to re-booked our Shinkansen reservation twice. United Aiines need to improve their time!

The staff is amazing, I cannot stress that enough! The food is really good and snacks at stations to take for yourselves. Economy seating is fine, not the most comfortable, but our friends in Premium Economy said they were very comfortable! Decent entertainment options, but being built in, you have to use their cheap headsets unless you have your own plug in ones. I only have Bluetooth earbuds.

It was good. The crew was efficient, food was good

Seats were extremely cramped even for economy. Food was atrocious. Crew was fine but no follow up, additional drinks offered etc. For a 14 hour flight I expected more.

Boarding was good. Inflight service was good. Alcoholic drinks could have been served free.

Suite lounge in Honolulu is the best lounge in Honolulu. I love the huge bathrooms in ANA first Class on the A380 Honu plane. Japanese meal was outstanding and service was amazing. Everything was just excellent. Can’t wait to fly again

Their was $200 charge for 2nd luggage, airplane very new and flight smooth. Flight time seem faster then Asian stoping Korea then china.

Flight was late boarding. United crew were not friendly and cordial unlike the ANA crew.

Seat was broken. Check in was not possible until we reached the gate, by then we were separated.

Later on, when there was no more bottled water, the water we received had a strong chlorine/disinfectant odor. On my flight from Hong Kong to Los Angeles, there was a male flight attendant who had a mean attitude throughout the whole trip, and he was very impatient during meal service “Furthermore, we purchased a Hong Kong SIM card as part of our flight package, but we received no instructions—neither by email nor SMS—on how to activate or use it. Consequently, we were unable to use the service at all. We request a full refund, as this appears to be a deceptive charge

The crew and the food were excellent. The plane was kept quite clean.

Very bad. Flight got delayed and missed my transfer flight twice. Had to stay overnight in Hong Kong and the next flight booked was also delayed.i had the worst experience flying from Singapore to San Francisco. Lots of delays and rerouting.

Crew were not engaging. Only engaged if requested. Food taste was mediocre

More tasty food particularly ethnic food. Staff didn’t respond to calls some of the time in premium economy.

My seat had many issues. First the chair was broken where reclining was difficult. My usb plug was also broken so charging was impossible.

The flight from Hong Kong to Hyderabad didn’t have any power points to charge my mobile. Given we are no longer allowed to use power banks, giving customers the ability to charge even on short flights is critical part of the overall experience.

I didn’t use entertainment But everything else was of excellent quality

Multiple late or canceled flights. Lounge was 100 degrees. Food was terrible. The plane was incredibly old, and best of all, a screaming child for 3 hours. All for the low low price of $2,600 one way Hanoi to Shanghai. No idea how Cathay is ranked so high. Cathay is not much better than American Airlines or Spirit. In the future I will go out of my way to not fly Cathay.

when i ask for help all the crew members had a look like why are you calling me? very terse and rude.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Great food selection in lounge. Excellent bartender, friendly staff. Good service on the plane.

Everything is ok except the manner of transporting the people that includes me on a wheelchair. That was my first time cuz I was suffering from “sciatica “ and couldn’t walk well. Upon arrival at LAX it took me almost 3 hrs to get out of the airport bcuz of these wheelchairs procedures. If only I can manage to walk I should have done so OMG. Other than that so far everything is ok. THANK YOU.

Check in process was excellent. Lounge needs improvement. Food not palatable and no good choices.

Apart from a departure gate change, a good experience with professional, friendly staff.

It was never explained why the departure flight was canceled and delayed for 1.5 hours. It would have been nice to stick with the original itinerary.

A shameful national carrier. Service has gone down from the highs of a decade before. You don’t feel the Filipino hospitality. It’s an aging fleet. Nil comfort, and I flew premium economy.

Many movies do not have captions, which would have been helpful when you have to live with the flight engine noise.

Everything was fantastic!!!! I can’t wait to fly home 😃!!!!!

Great. Always great service and their pilots know how to land planes properly

Flight was really good, considering the semi bad weather in MNL. Food was great. Crew kept offering throughout the flight. Wifi signal was intermittent though.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports