What airlines fly to Bangkok Suvarnabhumi Airport?

United Airlines, Cathay Pacific and Delta are the top three most popular airlines that fly to Bangkok Suvarnabhumi Airport from St. Louis according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Bangkok Suvarnabhumi Airport. Keep in mind that there are 7 different airlines that fly to Bangkok Suvarnabhumi Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Bangkok Suvarnabhumi?

Qatar Airways is the most popular carrier operating from Lambert-St Louis to Bangkok Suvarnabhumi

When did momondo last update prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

Prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

As of March 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport.

What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?

The travel and health documents required for your trip to Bangkok Suvarnabhumi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok Suvarnabhumi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$434 Cheap Flights from St. Louis to Bangkok Suvarnabhumi Airport in 2026

Q: What is the typical price of a round-trip flight between St. Louis and Bangkok Suvarnabhumi Airport?

Prices are currently low for flights on this route. Typical prices usually range from $1,351 to $1,116. The lowest price recently found on this route was $954.

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Find the cheapest flights from St. Louis to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:10 am - 11:50 pm

STL

BKK

26h 40m

2 stops

9:00 pm - 7:30 pm

BKK

STL

34h 30m

2 stops

$954Multiple Airlines

Sun, May 10 - Sun, May 17

7:00 am - 11:50 pm

STL

BKK

28h 50m

2 stops

3:55 pm - 1:22 pm

BKK

STL

33h 27m

2 stops

$955Multiple Airlines

Sun, May 10 - Sun, May 17

9:10 am - 11:50 pm

STL

BKK

26h 40m

2 stops

3:55 pm - 7:30 pm

BKK

STL

39h 35m

2 stops

$957Multiple Airlines

Sun, May 10 - Sun, May 17

8:00 am - 6:30 am

STL

BKK

34h 30m

2 stops

9:00 pm - 1:22 pm

BKK

STL

28h 22m

2 stops

$973Multiple Airlines

Sat, May 2 - Sat, May 9

9:10 am - 6:45 am

STL

BKK

33h 35m

2 stops

8:50 pm - 2:03 pm

BKK

STL

29h 13m

2 stops

$975Multiple Airlines

Mon, Apr 13 - Mon, Apr 20

4:18 pm - 11:50 am

STL

BKK

31h 32m

2 stops

3:15 am - 8:03 pm

BKK

STL

28h 48m

2 stops

$1,008Multiple Airlines

Thu, Sep 3 - Tue, Sep 15

12:27 pm - 7:05 am

STL

BKK

30h 38m

2 stops

2:05 am - 10:17 pm

BKK

STL

32h 12m

2 stops

$1,039Qatar Airways

Sun, Apr 19 - Tue, Apr 28

4:18 pm - 7:15 am

STL

BKK

26h 57m

2 stops

9:05 pm - 7:14 pm

BKK

STL

34h 09m

2 stops

$1,041Qatar Airways

Mon, Aug 31 - Mon, Sep 7

6:06 am - 6:15 am

STL

BKK

36h 09m

2 stops

3:15 am - 6:15 pm

BKK

STL

27h 00m

2 stops

$1,068Multiple Airlines

Thu, Sep 3 - Tue, Sep 15

2:33 pm - 7:05 am

STL

BKK

28h 32m

2 stops

1:45 am - 10:17 pm

BKK

STL

32h 32m

2 stops

$1,073Qatar Airways

Wed, Apr 22 - Wed, Apr 29

Qatar Airways flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best Qatar Airways deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets

Qatar Airways

Apr 19

STL12:27 pmLambert-St Louis

30h 38m

2 stops

BKK7:05 amBangkok Suvarnabhumi

Apr 28

BKK2:05 amBangkok Suvarnabhumi

32h 12m

2 stops

STL10:17 pmLambert-St Louis

$1,039

Qatar Airways

Aug 31

STL4:18 pmLambert-St Louis

26h 57m

2 stops

BKK7:15 amBangkok Suvarnabhumi

Sep 7

BKK9:05 pmBangkok Suvarnabhumi

34h 09m

2 stops

STL7:14 pmLambert-St Louis

$1,041

Qatar Airways

Apr 22

STL2:33 pmLambert-St Louis

28h 32m

2 stops

BKK7:05 amBangkok Suvarnabhumi

Apr 29

BKK1:45 amBangkok Suvarnabhumi

32h 32m

2 stops

STL10:17 pmLambert-St Louis

$1,073

United Airlines flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best United Airlines deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets

United Airlines

Apr 29

STL2:40 pmLambert-St Louis

30h 55m

3 stops

BKK9:35 amBangkok Suvarnabhumi

May 20

BKK9:35 amBangkok Suvarnabhumi

38h 36m

2 stops

STL12:11 pmLambert-St Louis

$1,388

United Airlines

Apr 29

STL2:40 pmLambert-St Louis

30h 55m

3 stops

BKK9:35 amBangkok Suvarnabhumi

May 20

BKK3:45 pmBangkok Suvarnabhumi

30h 22m

3 stops

STL10:07 amLambert-St Louis

$1,399

United Airlines

Sep 3

STL11:10 amLambert-St Louis

34h 25m

3 stops

BKK9:35 amBangkok Suvarnabhumi

Sep 16

BKK7:00 amBangkok Suvarnabhumi

26h 22m

2 stops

STL9:22 pmLambert-St Louis

$1,403

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 5/10

9:10 am-11:50 pm

2 stops26h 40m

Bangkok Suvarnabhumi

Sun 5/17

9:00 pm-7:30 pm

2 stops34h 30m

$954

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 5/10

7:00 am-11:50 pm

2 stops28h 50m

Bangkok Suvarnabhumi

Sun 5/17

3:55 pm-1:22 pm

2 stops33h 27m

$955

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 5/10

9:10 am-11:50 pm

2 stops26h 40m

Bangkok Suvarnabhumi

Sun 5/17

3:55 pm-7:30 pm

2 stops39h 35m

$957

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 5/2

8:00 am-6:30 am

2 stops34h 30m

Bangkok Suvarnabhumi

Sat 5/9

9:00 pm-1:22 pm

2 stops28h 22m

$973

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/13

9:10 am-6:45 am

2 stops33h 35m

Bangkok Suvarnabhumi

Mon 4/20

8:50 pm-2:03 pm

2 stops29h 13m

$975

Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 9/3

4:18 pm-11:50 am

2 stops31h 32m

Bangkok Suvarnabhumi

Tue 9/15

3:15 am-8:03 pm

2 stops28h 48m

$1,008

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 4/19

12:27 pm-7:05 am

2 stops30h 38m

Bangkok Suvarnabhumi

Tue 4/28

2:05 am-10:17 pm

2 stops32h 12m

$1,039

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 8/31

4:18 pm-7:15 am

2 stops26h 57m

Bangkok Suvarnabhumi

Mon 9/7

9:05 pm-7:14 pm

2 stops34h 09m

$1,041

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 9/3

6:06 am-6:15 am

2 stops36h 09m

Bangkok Suvarnabhumi

Tue 9/15

3:15 am-6:15 pm

2 stops27h 00m

$1,068

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 4/22

2:33 pm-7:05 am

2 stops28h 32m

Bangkok Suvarnabhumi

Wed 4/29

1:45 am-10:17 pm

2 stops32h 32m

$1,073

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Bangkok Suvarnabhumi Airport

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

Prices

Airlines

What is the typical price of a round-trip flight between St. Louis and Bangkok Suvarnabhumi Airport?

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

The month of February is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from St. Louis, with most prices found around $1,017. The month of January is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from St. Louis averaging around $1,067.

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $1,278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from St. Louis for as low as $987 on momondo.

How have St. Louis to Bangkok Suvarnabhumi Airport flight prices changed over time?

As of March 2026, prices for St. Louis to Bangkok Suvarnabhumi Airport flights are approximately 11% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Bangkok Suvarnabhumi Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Bangkok Suvarnabhumi Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Bangkok Suvarnabhumi Airport (STL to BKK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Bangkok Suvarnabhumi Airport

Fastest flight time	26h 57m
Direct flights	None

The fastest flight from St. Louis to Bangkok Suvarnabhumi Airport takes 26h 57m

There are no direct flights from St. Louis to Bangkok Suvarnabhumi Airport. There are no popular flight routes from St. Louis to Bangkok Suvarnabhumi Airport.

Search flight deals

How far is Lambert-St Louis to Bangkok Suvarnabhumi by plane?
The straight-line distance from Lambert-St Louis to Bangkok Suvarnabhumi is 8747.1 mi. By plane, this route typically takes 26h 57m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?
Prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?
As of March 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport.
What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?
The travel and health documents required for your trip to Bangkok Suvarnabhumi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok Suvarnabhumi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Bangkok Suvarnabhumi Airport?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Bangkok Suvarnabhumi Airport is United Airlines, representing 33% of all bookings. The subsequent popular airlines are Cathay Pacific at 21%, Delta at 17%, and ANA at 8%.

Best airlines flying from St. Louis to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from St. Louis to Bangkok Suvarnabhumi Airport with momondo

Airline	Rating	Free Cancellation	Price
Japan Airlines	PriceFrom $929	Free Cancellation	Rating 8.3 1,758 reviews	Search Japan Airlines flights
American Airlines	PriceFrom $954	Free Cancellation	Rating 7.1 11,533 reviews	Search American Airlines flights
Cathay Pacific	PriceFrom $974	Free Cancellation	Rating 7.6 1,234 reviews	Search Cathay Pacific flights
Delta	PriceFrom $978	Free Cancellation	Rating 7.9 8,360 reviews	Search Delta flights
United Airlines	PriceFrom $983	Free Cancellation	Rating 7.4 9,519 reviews	Search United Airlines flights
ANA	PriceFrom $1,007	Free Cancellation	Rating 8.4 1,160 reviews	Search ANA flights
Qatar Airways	PriceFrom $1,017	Free Cancellation	Rating 7.4 3,730 reviews	Search Qatar Airways flights

Pattaya

Ko Samet

Kanchanaburi

Cha-am

Chonburi

Ko Lan

Ayutthaya

Pak Chong

Sattahip

Phetchaburi

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?

momondo provides multiple filters to help you find the best flight to Bangkok from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Bangkok right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Flights to Bangkok Don Mueang Intl Airportfrom $848

Cheap flights from St. Louis to Bangkok from $434

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 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cheap round-trip flights

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Qatar Airways flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best Qatar Airways deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets

United Airlines flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best United Airlines deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

See travel insights to Bangkok from

How to get the cheapest flight ticket from St. Louis to Bangkok Suvarnabhumi Airport

What is the typical price of a round-trip flight between St. Louis and Bangkok Suvarnabhumi Airport?

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

How have St. Louis to Bangkok Suvarnabhumi Airport flight prices changed over time?

What is the cheapest airline that flies from Lambert-St Louis to Bangkok Suvarnabhumi?

What airlines fly to Bangkok Suvarnabhumi Airport?

When to book flights from St. Louis to Bangkok Suvarnabhumi Airport

Cheap St. Louis to Bangkok Suvarnabhumi Airport (STL to BKK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Bangkok Suvarnabhumi Airport

Fastest flight time

Direct flights

Best airlines flying from St. Louis to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from St. Louis to Bangkok Suvarnabhumi Airport with momondo

Traveling to a place near Bangkok?

Why use momondo?

An easier way to manage your Bangkok Suvarnabhumi Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bangkok

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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