Cheap flights from St. Louis to Bangkok from $550
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Bangkok departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Bangkok
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Delta flights from St. Louis to Bangkok
Our best Delta deals on St. Louis to Bangkok flight tickets
United Airlines flights from St. Louis to Bangkok
Our best United Airlines deals on St. Louis to Bangkok flight tickets
See travel insights to Bangkok from
How to get the cheapest flight ticket from St. Louis to Bangkok
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between St. Louis and Bangkok?
What is the cheapest month to fly to Bangkok?
If you aren’t able to travel during the month of October, then book flights to Bangkok from St. Louis during February instead. Flights to Bangkok in February, while not as cheap as those in October, still average around $1,182.
What is the cheapest day to depart on your flight to Bangkok?
On average, the least expensive day to fly to Bangkok from St. Louis is on a Monday. momondo users have found tickets for Monday departures for as low as $1,334. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Bangkok on a Thursday will generally be more expensive and average around $1,546. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Bangkok?
According to our data, the cheapest time of day to fly to Bangkok is in the morning. momondo users have found flights departing from St. Louis to Bangkok in the morning for as low as $1,339. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $1,754. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Bangkok?
You are more likely to see cheaper flights to Bangkok from St. Louis when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,399 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from St. Louis for as low as $1,025 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Bangkok?
ANA, United Airlines, and Delta are the most popular carriers operating from Lambert-St Louis to Bangkok
What airlines fly to Bangkok?
United Airlines, Cathay Pacific and Delta are the top three most popular airlines that fly to Bangkok from St. Louis according to our data. United Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 11 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.
Cheap St. Louis to Bangkok flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Bangkok
How far is Lambert-St Louis to Bangkok by plane?
A flight from Lambert-St Louis to Bangkok will travel around 8745.3 mi. Typically, this will take 24h 55m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Bangkok?
Prices for flights from Lambert-St Louis Airport to Bangkok are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Bangkok?
The number of operators available for flights from Lambert-St Louis Airport to Bangkok is 11 as of May 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from St. Louis to Bangkok
Compare and see reviews for airlines that fly from St. Louis to Bangkok with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,080 | Free Cancellation | Rating 8.3 1,464 reviews | |||
| PriceFrom $1,113 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $1,114 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,116 | Free Cancellation | Rating 7.3 3,791 reviews | |||
| PriceFrom $1,128 | Free Cancellation | Rating 8.3 852 reviews | |||
| PriceFrom $1,144 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $1,148 | Free Cancellation | Rating 7.4 3,563 reviews | |||
| PriceFrom $1,176 | Free Cancellation | Rating 7.0 9,252 reviews | |||
| PriceFrom $1,234 | Free Cancellation | Rating 7.5 855 reviews | |||
| PriceFrom $1,259 | Free Cancellation | Rating 8.4 1,068 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Bangkok?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bangkok from St. Louis.
Can I find flights from St. Louis to Bangkok with flexible booking policies on momondo?
Flights from St. Louis to Bangkok with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to Bangkok?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from St. Louis.
I’m not ready to book a flight from St. Louis to Bangkok right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.