$568 Cheap Flights from Bangkok (BKK) to St. Louis (STL)

View $568 flight on Wed, Nov 12, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $568 for one-way flights and $1,109 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Thu, Mar 5 - Thu, Mar 26
BKK
Bangkok
STL
St. Louis
$1,109 Roundtrip, found 1 day ago
$1,109
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Thu, Mar 5 from Bangkok to St. Louis, returning Thu, Mar 26, priced at $1,109 found 1 day ago
EVA Airways
Sun, Nov 9 - Thu, Nov 13
BKK
Bangkok
STL
St. Louis
$1,110 Roundtrip, found 6 days ago
$1,110
Roundtrip
found 6 days ago
Select EVA Airways flight, departing Sun, Nov 9 from Bangkok to St. Louis, returning Thu, Nov 13, priced at $1,110 found 6 days ago
EVA Airways
Tue, Feb 10 - Tue, Mar 10
BKK
Bangkok
STL
St. Louis
$1,111 Roundtrip, found 3 days ago
$1,111
Roundtrip
found 3 days ago
Select EVA Airways flight, departing Tue, Feb 10 from Bangkok to St. Louis, returning Tue, Mar 10, priced at $1,111 found 3 days ago
Air Canada
Tue, Oct 28 - Mon, Nov 10
BKK
Bangkok
STL
St. Louis
$1,117 Roundtrip, found 6 days ago
$1,117
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Oct 28 from Bangkok to St. Louis, returning Mon, Nov 10, priced at $1,117 found 6 days ago
Cathay Pacific
Sat, Sep 13 - Sat, Sep 20
BKK
Bangkok
STL
St. Louis
$1,158 Roundtrip, found 4 hours ago
$1,158
Roundtrip
found 4 hours ago
Select Cathay Pacific flight, departing Sat, Sep 13 from Bangkok to St. Louis, returning Sat, Sep 20, priced at $1,158 found 4 hours ago
Hawaiian Airlines
Fri, Sep 26 - Sun, Sep 28
BKK
Bangkok
STL
St. Louis
$1,229 Roundtrip, found 6 days ago
$1,229
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, Sep 26 from Bangkok to St. Louis, returning Sun, Sep 28, priced at $1,229 found 6 days ago
Qatar Airways
Wed, Oct 1 - Tue, Oct 28
BKK
Bangkok
STL
St. Louis
$1,289 Roundtrip, found 2 days ago
$1,289
Roundtrip
found 2 days ago
Select Qatar Airways flight, departing Wed, Oct 1 from Bangkok to St. Louis, returning Tue, Oct 28, priced at $1,289 found 2 days ago
Lufthansa
Tue, Feb 10 - Tue, Mar 10
BKK
Bangkok
STL
St. Louis
$1,374 Roundtrip, found 3 days ago
$1,374
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Tue, Feb 10 from Bangkok to St. Louis, returning Tue, Mar 10, priced at $1,374 found 3 days ago
Delta
Sun, Sep 28 - Fri, Oct 24
BKK
Bangkok
STL
St. Louis
$1,407 Roundtrip, found 19 hours ago
$1,407
Roundtrip
found 19 hours ago
Select Delta flight, departing Sun, Sep 28 from Bangkok to St. Louis, returning Fri, Oct 24, priced at $1,407 found 19 hours ago
Korean Air
Mon, Sep 15 - Sun, Sep 21
BKK
Bangkok
STL
St. Louis
$1,415 Roundtrip, found 3 days ago
$1,415
Roundtrip
found 3 days ago
Select Korean Air flight, departing Mon, Sep 15 from Bangkok to St. Louis, returning Sun, Sep 21, priced at $1,415 found 3 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,451
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,451
Flights from Bangkok (BKK) to St. Louis (STL)
Origin airport
Suvarnabhumi Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, Austrian Airlines, Cathay Pacific, Delta, Finnair, Japan Airlines, KLM, Korean Air, Lufthansa, Qatar Airways, Turkish Airlines, United
Roundtrip price
$1,108
Distance
8742 mi

Bangkok to St. Louis Flights

The cheapest times to fly from Bangkok to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Bangkok to St. Louis are during the month of March. You can find some of the cheapest flights from Bangkok to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bangkok to St. Louis

Sunday is one of the best days to book for cheap flights from Bangkok to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Bangkok to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Bangkok to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $568 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Bangkok to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Bangkok to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $568 or cheap return flight from $1,109 from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL)?
Flying in March is a good way to save, as it's the cheapest month for flights between BKK and STL. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest BKK to STL flight.
How many flights per day from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any daily nonstop flights from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from BKK to STL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL)?
To reach Lambert-St. Louis Intl. Airport (STL) on time, opt for a flight that leaves Suvarnabhumi Intl. Airport (BKK) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your departure to book your flight from BKK to STL often results in higher prices. While you may come across some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible to boost your chances of snagging a bargain.
Is it cheaper to book a BKK to STL flight and hotel package?
You'll typically save money by securing a BKK to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After choosing your ideal accommodations and flights, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Suvarnabhumi Intl. Airport (BKK) to Lambert-St. Louis Intl. Airport (STL)?
In most cases, you can cancel or reschedule your BKK to STL flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, head to our Customer Service portal.

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