฿17,470 Cheap Flights from St. Louis (STL) to Bangkok (BKK)

View ฿17,470 flight on Thu, 4 Sep 2025Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Suvarnabhumi International Airport (BKK)

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Cheap Flights from St. Louis (STL) to Bangkok (BKK)

Prices were available within the past 7 days and start at ฿17,470 for one-way flights and ฿31,605 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 25 Aug - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿31,605 Return, found 1 day ago
฿31,605
Return
found 1 day ago
Select Delta flight, departing Mon, 25 Aug from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿31,605 found 1 day ago
United
Mon, 25 Aug - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿32,005 Return, found 1 day ago
฿32,005
Return
found 1 day ago
Select United flight, departing Mon, 25 Aug from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿32,005 found 1 day ago
United
Thu, 4 Sep - Thu, 11 Sep
STL
St. Louis
BKK
Bangkok
฿32,050 Return, found 4 days ago
฿32,050
Return
found 4 days ago
Select United flight, departing Thu, 4 Sep from St. Louis to Bangkok, returning Thu, 11 Sep, priced at ฿32,050 found 4 days ago
Cathay Pacific
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿32,380 Return, found 1 day ago
฿32,380
Return
found 1 day ago
Select Cathay Pacific flight, departing Thu, 4 Sep from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿32,380 found 1 day ago
Japan Airlines
Mon, 25 Aug - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿32,400 Return, found 1 day ago
฿32,400
Return
found 1 day ago
Select Japan Airlines flight, departing Mon, 25 Aug from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿32,400 found 1 day ago
American Airlines
Mon, 25 Aug - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿32,505 Return, found 1 day ago
฿32,505
Return
found 1 day ago
Select American Airlines flight, departing Mon, 25 Aug from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿32,505 found 1 day ago
Cathay Pacific
Thu, 13 Nov - Wed, 25 Mar
STL
St. Louis
BKK
Bangkok
฿33,015 Return, found 1 day ago
฿33,015
Return
found 1 day ago
Select Cathay Pacific flight, departing Thu, 13 Nov from St. Louis to Bangkok, returning Wed, 25 Mar, priced at ฿33,015 found 1 day ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿33,235 Return, found 1 day ago
฿33,235
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿33,235 found 1 day ago
Japan Airlines
Mon, 25 Aug - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿33,320 Return, found 1 day ago
฿33,320
Return
found 1 day ago
Select Japan Airlines flight, departing Mon, 25 Aug from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿33,320 found 1 day ago
United
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
BKK
Bangkok
฿33,635 Return, found 1 day ago
฿33,635
Return
found 1 day ago
Select United flight, departing Thu, 4 Sep from St. Louis to Bangkok, returning Mon, 8 Sep, priced at ฿33,635 found 1 day ago

Find the cheapest month to fly from St. Louis (STL) to Bangkok (BKK)

September is typically the cheapest month to fly

From ฿31,250 - ฿50,519 per traveller.

Graph displaying average flight prices per month

Flight from St. Louis to Bangkok route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, Air France, American Airlines, Cathay Pacific, Delta, Japan Airlines, KLM, Korean Air, Qatar Airways, Turkish Airlines, United
Return price
฿31,605
Distance
13988 km

Perfect flights from St. Louis to Bangkok

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from St. Louis to Bangkok. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Lambert-St. Louis Intl. to Suvarnabhumi Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿17,470 and roundtrip prices from ฿31,605. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Suvarnabhumi Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Bangkok.

Frequently asked questions

How much is a flight from STL to BKK?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Lambert Field to Suvarnabhumi Airport start from ฿31,605. Make your booking today to get the best price for your adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from STL to Suvarnabhumi Airport?
Each air carrier has its own set of terms and conditions. If you decide to cancel your trip, head to our Customer Service Portal.
How do I find cheap flights from STL to Suvarnabhumi Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for STL to Suvarnabhumi Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from STL to Suvarnabhumi Intl. Airport (BKK)?
With a flight distance of 14,100 kilometres between St. Louis Lambert International Airport and Bangkok Airport, this is a long trip. Make sure you drink lots of water and go for a short walk down the aisle every so often.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Suvarnabhumi Intl. Airport (BKK)?
Right now, no airlines offer direct flights from Lambert Field to Suvarnabhumi Intl. Airport (BKK). You'll need to book a flight with one or more stops. To score the best connections and price, lock in your airfare well in advance.
Are STL to BKK flight tickets cheaper when they're purchased at the last minute?
Fares from St. Louis Lambert International Airport to BKK are available up to a year prior to departure on Expedia. And although you may occasionally pick up great last-minute deal, it's not something you should bank on. Also, booking your flights well in advance means you'll have more choices — and you can avoid landing the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

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