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

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)

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Alternative airports near Bangkok

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

Select flight to Suvarnabhumi Intl. BKK. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $1,451
BKK
Suvarnabhumi Intl.
Cheapest
Average driving time to city center23 min
Flights from $1,451

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK) cost?
Secure a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)?
Planning your getaway for can help you save, as it's the cheapest month for flights between STL and DMK. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)?
To find the cheapest airline that'll fly you from STL to DMK, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)?
You'll need to hop on a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from STL to DMK?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)?
To reach Don Mueang Intl. Airport (DMK) without delays, select a flight that takes off from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood 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 Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK) last-minute?
Last-minute bookings from STL to DMK are typically more expensive. To lock in the best rates, start looking for flights well in advance. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your trip.
Is it cheaper to book a STL to DMK flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to DMK flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Simply pick your flights and choose from our wide range of stays, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Don Mueang Intl. Airport (DMK)?
In most instances, you can reschedule or cancel your STL to DMK flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Don Mueang Intl.
Distance
8729 mi

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St. Louis to Bangkok Flights

The cheapest times to fly from St. Louis to Bangkok

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 St. Louis to Bangkok are during the month of . You can find some of the cheapest flights from St. Louis to Bangkok with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Bangkok: 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 St. Louis to Bangkok

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 St. Louis to Bangkok in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 St. Louis to Bangkok 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 St. Louis to Bangkok 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.

 

St. Louis to Bangkok Flights

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