$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 2/4. 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
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Everything you should know

Cheapest round-trip
$968
Typical prices: $1,188-$1,416
Air Canada
Thu 5/14Tue 5/19
BKK - STL • 2 stops
Cheapest one-way
$531
Typical prices: $609-$638
Philippine Airlines
Wed 2/4
BKK - STL • 2 stops
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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

Thu, May 14 - Tue, May 19
Air Canada Logo
7:45 am - 8:05 pm
BKK
-
STL
24h 20m
2 stops
Air Canada Logo
7:30 am - 5:05 am
STL
-
BKK
57h 35m
2 stops
$968Air Canada
Tue, Apr 21 - Wed, May 6
Multiple Airlines Logo
7:35 am - 11:59 pm
BKK
-
STL
28h 24m
2 stops
Multiple Airlines Logo
7:00 am - 12:10 am
STL
-
BKK
29h 10m
2 stops
$1,034Multiple Airlines
Thu, Apr 23 - Fri, May 1
Multiple Airlines Logo
5:30 pm - 9:05 pm
BKK
-
STL
39h 35m
2 stops
Multiple Airlines Logo
8:25 am - 9:45 am
STL
-
BKK
37h 20m
2 stops
$1,061Multiple Airlines
Tue, Apr 21 - Wed, May 6
Multiple Airlines Logo
4:45 pm - 3:50 pm
BKK
-
STL
35h 05m
2 stops
Multiple Airlines Logo
4:46 pm - 10:55 am
STL
-
BKK
30h 09m
2 stops
$1,106Multiple Airlines
Thu, Apr 23 - Fri, May 1
Multiple Airlines Logo
1:20 pm - 3:50 pm
BKK
-
STL
38h 30m
2 stops
Multiple Airlines Logo
8:25 am - 9:45 am
STL
-
BKK
37h 20m
2 stops
$1,130Multiple Airlines
Tue, Apr 21 - Wed, May 6
Multiple Airlines Logo
10:50 am - 2:50 pm
BKK
-
STL
40h 00m
3 stops
Multiple Airlines Logo
8:35 am - 4:20 pm
STL
-
BKK
43h 45m
2 stops
$1,141Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
Qatar Airways Logo
8:20 am - 11:35 pm
HKT
-
STL
52h 15m
2 stops
Qatar Airways Logo
9:37 am - 6:50 am
STL
-
HKT
33h 13m
2 stops
$1,334Qatar Airways
Thu, Mar 5 - Mon, Mar 9
Qatar Airways Logo
8:20 am - 11:35 pm
HKT
-
STL
52h 15m
2 stops
Qatar Airways Logo
9:37 am - 12:55 pm
STL
-
HKT
39h 18m
2 stops
$1,340Qatar Airways
Thu, May 14 - Tue, May 19
United Airlines Logo
9:35 am - 9:52 pm
BKK
-
STL
48h 17m
2 stops
United Airlines Logo
8:46 am - 9:35 am
STL
-
BKK
36h 49m
3 stops
$1,445United Airlines
Thu, May 14 - Tue, May 19
United Airlines Logo
7:00 am - 4:57 pm
BKK
-
STL
45h 57m
3 stops
United Airlines Logo
8:46 am - 9:35 am
STL
-
BKK
36h 49m
3 stops
$1,448United Airlines
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 seasonFebruary
Cheapest flight$531
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 3% 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 $287. On the other hand, the most expensive day to fly is Saturday, where prices are $490 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.

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

    Each week there are around 1,771 direct flights from within Thailand to St. Louis. The most common day for departures is Sunday, 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 1691 reviews
7.7Food
8.7Crew
7.8Entertainment
8.2Comfort
8.4Boarding
Airline reviews

The flights were on time and the cabin crew were very nice. The only downside was that the food was not good

10.0 ExcellentMichael, Jan 2026
HND - ORD
Read more Japan Airlines reviews

The flights were on time and the cabin crew were very nice. The only downside was that the food was not good

I like the intention and service of the flight crew. Japanese values were observed and appreciated as a customer.

Our flight was delayed by one hour. Luckily, we were still able to make our connection. This flight is really an Alaska Airlines flight and not the same excellent service and comfort as Japan Airlines.

Very comfortab flight. The flight crew and service was terrific. The food was average at best.

First time flying. Very comfortable, plenty of leg room in economy. The food was good, as well as the snacks. Quick flight back from Kansai to HNL.

Excellent service, excellent food and beverage options, plenty of legroom

I wouldn’t know, I tried to contact you days before to reschedule my flight back to Okinawa but you left me on hold for 2 hours. I tried calling multiple times and not once did you pick up. I had to spend 2000 dollars on a one way ticket back to Okinawa because I couldn’t get ahold of you guys to change my flight.

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 was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

I so appreciate the crew members on each flight of United. They are outstanding.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

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