$531 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 3/8. 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 24% 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.

Everything you should know

Cheapest round-trip
$963
Multiple Airlines
Mon 3/16Thu 4/2
BKK - STL • 2 stops
Cheapest one-way
$531
Typical prices: $614-$791
Multiple Airlines
Sun 3/8
BKK - STL • 2 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!
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

Mon, Mar 16 - Thu, Apr 2
Multiple Airlines Logo
11:50 pm - 1:52 pm
BKK
-
STL
50h 02m2 stops
Multiple Airlines Logo
7:00 am - 12:10 pm
STL
-
BKK
41h 10m2 stops
$963Multiple Airlines
Thu, Mar 26 - Tue, Mar 31
Delta Logo
2:05 am - 12:18 am
BKK
-
STL
34h 13m2 stops
Delta Logo
7:15 am - 11:40 pm
STL
-
BKK
28h 25m2 stops
$1,103Delta
Thu, Mar 26 - Mon, Mar 30
Delta Logo
12:55 am - 3:57 pm
BKK
-
STL
51h 02m2 stops
Delta Logo
7:10 am - 11:40 pm
STL
-
BKK
52h 30m2 stops
$1,104Delta
Thu, Mar 26 - Mon, Mar 30
Delta Logo
2:05 am - 8:52 am
BKK
-
STL
42h 47m2 stops
Delta Logo
7:10 am - 9:45 pm
STL
-
BKK
50h 35m2 stops
$1,107Delta
Thu, Mar 26 - Sun, Mar 29
Delta Logo
12:55 am - 12:18 am
BKK
-
STL
35h 23m2 stops
Delta Logo
6:00 am - 11:40 pm
STL
-
BKK
29h 40m2 stops
$1,213Delta
Thu, Mar 26 - Wed, Apr 1
Delta Logo
12:55 am - 11:42 pm
BKK
-
STL
34h 47m2 stops
Delta Logo
5:00 pm - 9:45 pm
STL
-
BKK
40h 45m2 stops
$1,215Delta
Thu, Mar 26 - Wed, Apr 1
Delta Logo
2:05 am - 3:57 pm
BKK
-
STL
49h 52m2 stops
Delta Logo
5:00 pm - 9:45 pm
STL
-
BKK
40h 45m2 stops
$1,218Delta
Tue, Feb 17 - Thu, Feb 19
Japan Airlines Logo
9:55 am - 1:54 pm
BKK
-
STL
40h 59m2 stops
Japan Airlines Logo
7:00 am - 4:25 pm
STL
-
BKK
44h 25m2 stops
$1,301Japan Airlines
Thu, Mar 19 - Sun, Mar 22
Cathay Pacific Logo
12:20 pm - 10:58 pm
HKT
-
STL
46h 38m2 stops
Cathay Pacific Logo
6:38 am - 11:20 am
STL
-
HKT
40h 42m2 stops
$1,490Cathay Pacific
Thu, Mar 19 - Sun, Mar 22
Cathay Pacific Logo
12:20 pm - 10:58 pm
HKT
-
STL
46h 38m2 stops
Cathay Pacific Logo
6:38 am - 11:20 am
STL
-
HKT
40h 42m2 stops
$1,492Cathay Pacific
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 United Airlines.

Good to know

Low seasonJune
Cheapest flight$531
Best time to beat the crowds with an average 17% 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 2,410 direct flights from within Thailand to St. Louis. The most common day for departures is Monday, with 17% 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 airlines flying 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 1662 reviews
7.8Entertainment
8.7Crew
8.4Boarding
7.7Food
8.2Comfort
Airline reviews

I fell asleep, and the crew kindly left some snacks for me

8.0 ExcellentVi, Dec 2025
ORD - LAX
Read more Japan Airlines reviews

I fell asleep, and the crew kindly left some snacks for me

Underpricer is a terrible third party service that couldn’t change three letters on my boarding pass in time to make a flight. It cost me tons of money to have to buy a new ticket with JAL. I’m extremely let down with Kayak using such a sketchy company with horrific customer service.

Check in procedure is harder than with other airlines, infotainment system is outdated

I liked- timely took the take off I disliked- food for ANML was not served even after request, ASVML was really bad, the cleanliness of seats were not up to satisfactory level and I had to use my own sanitizer. Even basic sanitizer packs were not served, cabin crew could be more friendly as I noticed their behavior against other fellow passangers who were not speaking English well.

The crew was attentive and provided everything I needed. The business class food was excellent.

Fantastic flight company. A higher standard than any American airline company for sure.

great experience - staff were kind and attentive and food was excellent. very comfortable flight that felt much shorter than 14 hours.

I thought this was a JAL flight but landed up being a code sharing one with Hawaiian Air. Got upgraded by check in staff and they confirmed my bag coming from Bangkok which was great. Cabin crew was solid, not especially friendly, just super efficient and wanting to get the job done which they did. Very fast and agenda oriented. Worst part is my economy plus seat was no better than my economy seat on JAL. Plus JAL has way better food, cleaner plane, and better crew. Worst part is when I landed, was never told where to grab bags. I had correct flight name and number for JAL but there was a Hawaiian flight number in another baggage terminal. I wasted over an hour with no help from ground staff for my bag. Hawaiian and Alaska airlines merger can’t happen fast enough as Hawaiian airlines is a dinosaur. Bad experience again and I’m not surprised. JAL rocks!

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 👍👍

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

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

Staff on board was excellent. Positive upbeat helpful- like it used to be.

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

For an expensive flight to another country, United has a lot of nerve serving pretzels and no meals (unless, of course, you want to buy something to eat). Unacceptable.

The food is terrible. The same pasta or chicken with bad taste and presentation

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

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

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.

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

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