฿15,080 Cheap Flights from St. Louis (STL) to Bangkok (BKK)

View ฿15,080 flight on Wed, 14 Jan 2026Opens 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 ฿15,080 for one-way flights and ฿31,410 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 29 Oct - Tue, 11 Nov
STL
St. Louis
BKK
Bangkok
฿31,410 Return, found 1 day ago
฿31,410
Return
found 1 day ago
Select Delta flight, departing Wed, 29 Oct from St. Louis to Bangkok, returning Tue, 11 Nov, priced at ฿31,410 found 1 day ago
United
Tue, 4 Nov - Tue, 11 Nov
STL
St. Louis
BKK
Bangkok
฿31,905 Return, found 1 day ago
฿31,905
Return
found 1 day ago
Select United flight, departing Tue, 4 Nov from St. Louis to Bangkok, returning Tue, 11 Nov, priced at ฿31,905 found 1 day ago
United
Mon, 3 Nov - Mon, 10 Nov
STL
St. Louis
BKK
Bangkok
฿32,180 Return, found 1 day ago
฿32,180
Return
found 1 day ago
Select United flight, departing Mon, 3 Nov from St. Louis to Bangkok, returning Mon, 10 Nov, priced at ฿32,180 found 1 day ago
Alaska Airlines
Wed, 4 Mar - Wed, 18 Mar
STL
St. Louis
BKK
Bangkok
฿32,210 Return, found 3 days ago
฿32,210
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 4 Mar from St. Louis to Bangkok, returning Wed, 18 Mar, priced at ฿32,210 found 3 days ago
United
Tue, 18 Nov - Mon, 1 Dec
STL
St. Louis
BKK
Bangkok
฿32,455 Return, found 1 day ago
฿32,455
Return
found 1 day ago
Select United flight, departing Tue, 18 Nov from St. Louis to Bangkok, returning Mon, 1 Dec, priced at ฿32,455 found 1 day ago
Delta
Wed, 29 Oct - Fri, 7 Nov
STL
St. Louis
BKK
Bangkok
฿32,705 Return, found 1 day ago
฿32,705
Return
found 1 day ago
Select Delta flight, departing Wed, 29 Oct from St. Louis to Bangkok, returning Fri, 7 Nov, priced at ฿32,705 found 1 day ago
American Airlines
Wed, 4 Mar - Wed, 18 Mar
STL
St. Louis
BKK
Bangkok
฿32,865 Return, found 3 days ago
฿32,865
Return
found 3 days ago
Select American Airlines flight, departing Wed, 4 Mar from St. Louis to Bangkok, returning Wed, 18 Mar, priced at ฿32,865 found 3 days ago
Delta
Wed, 29 Oct - Tue, 4 Nov
STL
St. Louis
BKK
Bangkok
฿33,030 Return, found 1 day ago
฿33,030
Return
found 1 day ago
Select Delta flight, departing Wed, 29 Oct from St. Louis to Bangkok, returning Tue, 4 Nov, priced at ฿33,030 found 1 day ago
United
Sat, 1 Nov - Mon, 10 Nov
STL
St. Louis
BKK
Bangkok
฿33,200 Return, found 1 day ago
฿33,200
Return
found 1 day ago
Select United flight, departing Sat, 1 Nov from St. Louis to Bangkok, returning Mon, 10 Nov, priced at ฿33,200 found 1 day ago
Cathay Pacific
Thu, 30 Oct - Tue, 11 Nov
STL
St. Louis
BKK
Bangkok
฿33,495 Return, found 1 day ago
฿33,495
Return
found 1 day ago
Select Cathay Pacific flight, departing Thu, 30 Oct from St. Louis to Bangkok, returning Tue, 11 Nov, priced at ฿33,495 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 ฿29,996 - ฿40,878 per traveller.
Flight from St. Louis to Bangkok route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, American Airlines, Austrian Airlines, British Airways, Cathay Pacific, Delta, Finnair, Japan Airlines, KLM, Qatar Airways, Royal Jordanian, United
Return price
฿31,410
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 ฿15,080 and roundtrip prices from ฿31,410. 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 ฿31,410. 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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