$538 Find Cheap Flights from Thailand to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 1/17. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Thailand to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Thailand to St. Louis 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 Thailand to St. Louis

Wed, Mar 4 - Mon, Mar 9
Delta Logo
2:05 am - 11:40 pmBKK-STL
34h 35m2 stops
Delta Logo
6:30 am - 12:55 amSTL-BKK
30h 25m2 stops
$1,024Delta
Find Deal
Wed, Mar 4 - Mon, Mar 9
Delta Logo
2:05 am - 11:40 pmBKK-STL
34h 35m2 stops
Delta Logo
6:45 am - 12:45 amSTL-BKK
30h 00m2 stops
$1,031Delta
Find Deal
Thu, Mar 5 - Mon, Mar 9
Cathay Pacific Logo
4:55 pm - 10:57 pmBKK-STL
43h 02m2 stops
Cathay Pacific Logo
11:18 am - 12:15 amSTL-BKK
24h 57m2 stops
$1,147Cathay Pacific
Find Deal
Thu, Mar 5 - Mon, Mar 9
Cathay Pacific Logo
5:40 pm - 11:48 pmBKK-STL
43h 08m2 stops
Cathay Pacific Logo
11:18 am - 12:15 amSTL-BKK
24h 57m2 stops
$1,159Cathay Pacific
Find Deal
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
4:55 pm - 1:13 pmBKK-STL
33h 18m3 stops
United Airlines Logo
3:13 pm - 11:25 amSTL-BKK
32h 12m3 stops
$1,409United Airlines
Find Deal
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
4:55 pm - 1:13 pmBKK-STL
33h 18m3 stops
United Airlines Logo
3:13 pm - 11:25 amSTL-BKK
32h 12m3 stops
$1,419United Airlines
Find Deal
Thu, Dec 11 - Fri, Dec 19
Multiple Airlines Logo
12:55 am - 1:53 pmBKK-STL
25h 58m2 stops
Multiple Airlines Logo
7:05 am - 11:20 pmSTL-BKK
27h 15m2 stops
$1,918Multiple Airlines
Find Deal
Fri, Dec 12 - Sat, Dec 20
Korean Air Logo
12:55 am - 1:53 pmBKK-STL
25h 58m2 stops
Korean Air Logo
7:02 pm - 11:20 pmSTL-BKK
39h 18m2 stops
$2,015Korean Air
Find Deal
Thu, Dec 11 - Fri, Dec 19
Korean Air Logo
12:55 am - 9:02 pmBKK-STL
33h 07m2 stops
Korean Air Logo
7:05 am - 12:45 amSTL-BKK
28h 40m2 stops
$2,155Korean Air
Find Deal
Fri, Dec 12 - Fri, Dec 19
Multiple Airlines Logo
8:15 am - 3:29 pmBKK-STL
44h 14m2 stops
Multiple Airlines Logo
4:05 pm - 4:00 pmSTL-BKK
34h 55m3 stops
$2,842Multiple Airlines
Find Deal

Everything you should know

Cheapest round-trip
$1,024
Delta
Wed 3/4Mon 3/9
BKK - STL • 2 stops
Cheapest one-way
$538
Typical prices: $929-$936
Multiple Airlines
Sat 1/17
BKK - STL • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Booking Insights

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

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

What are the most popular airlines flying to Lambert-St Louis?

The most popular airline among KAYAK users flying to Lambert-St Louis is Japan Airlines, followed by Air Canada and United Airlines.

Good to know

Low seasonOctober
Cheapest flight$538
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Bangkok to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The distance between Lambert-St Louis Airport and downtown St. Louis is 13 miles.

  • What is the name of St. Louis’s airport?

    All flights to St. Louis land at Lambert-St Louis Airport. The airport code is STL,and it can also be referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Friday where tickets can be as cheap as $312. On the other hand, the most expensive day to fly is Sunday, where prices are $574 on average.

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

    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 to St. Louis.

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

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

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

    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 to St. Louis 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 to St. Louis?

    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 to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to St. Louis is generally in the morning, when flights cost $1,245 on average. The most expensive time of day to fly to St. Louis is generally at night, which is peak travel time and where the average cost of a ticket is $1,251.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 1,935 direct flights from within Thailand to St. Louis. The most common day for departures is Thursday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top 3 airlines serving from Thailand to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
8.3
Japan AirlinesOverall score based on 1596 reviews
8.4Boarding
8.2Comfort
8.7Crew
7.7Food
7.8Entertainment
Airline reviews

The seat was uncomfortable and seemed to be on its last days. Loose and sloppy

6.0 GoodWilliam, Oct 2025LAX - PDX
Read more Japan Airlines reviews

The seat was uncomfortable and seemed to be on its last days. Loose and sloppy

Business class lie flat seat is the best and easiest to operate 👍👍

My seat had zero leg room. I thought I was flying Japan Airlines, a company I picked based solely on the legroom... When I got to the airport on my first flight, they informed me that I was in fact flying J.A.L VIA American Airlines... What a bait and switch. I will never fly AA on an international flight ever again.

put me in front row, screen was tiny, movie slection wasnt very good will be flying back on another airlines

Excellent flight. Check in experience was a breeze. Smooth and on time flight. Friendly and attentive attendants. Premium economy seating was very spacious. The lounges in both SEATAC and Narita were first rate. The only negative was the inflight food and entertainment options, which were limited, and Wi-Fi was not working. We would definitely fly JAL again.

Not good. The flight from LAX to Tokyo was delayed 15 hours.

My luggage is missing and waiting to hear back about it. 3 of my 6 checked bags didn’t make it to DFW.

Boarding, crew, and seating were great. The food needs to improve.

JAL is an exceptional airline that shows the true heart of Japanese omotenashi service. If the option is available I’ll always chose it

I avoid American Airlines for a reason. Our flight was delayed at LAX. The situation at the gate was chaotic. The woman making announcements wasn't being clear or transparent regarding why there were delays. There was a lot of confusion regarding flight and gate status. Other passengers were pretty rude. I was elbowed in the eye by someone who was in a hurry to get their bags from the overhead bin immediately after the flight landed. Ultimately, I will avoid AA as much as possible in the future.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Flight left on time. Boarding was easy. Arrived to EWR 30 mins early. Luggage was deplaned in good time. Overall a very good experience.

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The person I bought the ticket for didn’t make the flight.

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.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

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

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Excellent all round, first time flying United. App is very helpful.

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

Extremely turbulent landing. Crew was friendly and plane comfortable. Airport and US pre clearance was understaffed

The airplane is way too tight, you can hardly enter into your row to sit.. more like kids seats than adults.

taking our carryon and forcing us to check it through

Wifi was great. Kind air crew and comfortable seating. Also liked the entertainment options.

Great flight. Only complaint is it took over an hour for my luggage to get to the carousel on the return to LAX That was irritating

I knew I was going to fall asleep unsettlingly from exhaustion so I warned the guy next to me in advance. The attendant took to checking on me frequently and even insisted I take my snack because I said no while sleep hazed and then absolutely wanted it about 5 minutes later. He was So caring and kind to my situation!!

First message when all on board was that we didnt have a pilot, then they found one, then it was something about the bridge something not working, they will either fix or do manually. Flight of course was leaving late with all the cruise guests worrying about making it to their ship in time. Then only some luggage made it off the ship. Around 15 to 20 people waiting. 45 min later arrived except mine. I asked the rep at the luggage conveyor, he asked me my name. Then said it was not picked up with the first batch so they put it in a room. I was going to take public transport but now worried about time so took a taxi that cost me $65 USD

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.