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 43% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 10 different airlines that fly to Bangkok 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?

Japan Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Lambert-St Louis to Bangkok

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 10 as of July 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.

$527 Cheap Flights from St. Louis to Bangkok in 2025

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Find the cheapest flights from St. Louis to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

9:17 am - 4:35 amSTL-BKK

31h 18m2 stops

1:55 pm - 2:19 pmBKK-STL

36h 24m2 stops

$973ANA

Find Deal

Mon, Aug 25 - Tue, Sep 9

7:35 am - 1:05 amSTL-BKK

29h 30m2 stops

2:35 am - 10:02 pmBKK-STL

31h 27m2 stops

$978Delta

Find Deal

Mon, Aug 25 - Mon, Sep 8

6:40 am - 1:05 amSTL-BKK

30h 25m2 stops

9:40 pm - 1:20 pmBKK-STL

27h 40m2 stops

$979Delta

Find Deal

Thu, Aug 28 - Wed, Sep 3

3:20 pm - 4:35 amSTL-BKK

49h 15m2 stops

9:35 am - 7:42 pmBKK-STL

46h 07m2 stops

$989United Airlines

Find Deal

Sun, Aug 10 - Tue, Sep 30

9:00 am - 10:50 amSTL-BKK

36h 50m3 stops

7:10 am - 7:25 pmBKK-STL

25h 15m2 stops

$990United Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

9:56 am - 3:10 pmSTL-BKK

41h 14m2 stops

12:55 am - 11:26 pmBKK-STL

34h 31m2 stops

$1,015Japan Airlines

Find Deal

Tue, Sep 30 - Tue, Oct 28

6:00 am - 11:10 pmSTL-BKK

29h 10m2 stops

1:20 am - 11:59 pmBKK-STL

34h 39m2 stops

$1,026

Find Deal

Tue, Sep 9 - Sat, Sep 13

3:35 pm - 12:10 pmSTL-BKK

32h 35m2 stops

2:40 am - 2:41 pmBKK-STL

48h 01m2 stops

$1,031China Airlines

Find Deal

Mon, Aug 25 - Mon, Sep 8

7:00 am - 4:45 pmSTL-BKK

44h 45m2 stops

2:35 am - 3:05 pmBKK-STL

49h 30m2 stops

$1,041China Airlines

Find Deal

Tue, Nov 11 - Mon, Nov 17

3:57 pm - 11:10 pmSTL-BKK

43h 13m2 stops

1:20 am - 12:03 amBKK-STL

34h 43m2 stops

$1,072

Find Deal

Tue, Oct 7 - Thu, Oct 16

United Airlines flights from St. Louis to Bangkok

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

United Airlines

Aug 10

STL3:20 pmLambert-St Louis

49h 15m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 30

BKK9:35 amBangkok Suvarnabhumi

46h 07m

2 stops

STL7:42 pmLambert-St Louis

$989

Find similar

United Airlines

Nov 11

STL9:00 amLambert-St Louis

36h 50m

3 stops

BKK10:50 amBangkok Suvarnabhumi

Nov 18

BKK7:10 amBangkok Suvarnabhumi

25h 15m

2 stops

STL7:25 pmLambert-St Louis

$990

Find similar

United Airlines

Aug 10

STL1:25 pmLambert-St Louis

51h 10m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 30

BKK7:00 amBangkok Suvarnabhumi

26h 59m

3 stops

STL9:59 pmLambert-St Louis

$993

Find similar

ANA flights from St. Louis to Bangkok

Our best ANA deals on St. Louis to Bangkok flight tickets

ANA

Aug 25

STL9:17 amLambert-St Louis

31h 18m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 9

BKK1:55 pmBangkok Suvarnabhumi

36h 24m

2 stops

STL2:19 pmLambert-St Louis

$973

Find similar

ANA

Sep 30

STL9:20 amLambert-St Louis

31h 15m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Oct 29

BKK9:25 amBangkok Suvarnabhumi

42h 25m

2 stops

STL3:50 pmLambert-St Louis

$981

Find similar

ANA

Aug 25

STL9:17 amLambert-St Louis

32h 43m

2 stops

BKK6:00 amBangkok Suvarnabhumi

Sep 9

BKK9:35 pmBangkok Suvarnabhumi

28h 44m

2 stops

STL2:19 pmLambert-St Louis

$982

Find similar

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

Prices

Airlines

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 January instead. Flights to Bangkok in January, while not as cheap as those in October, still average around $1,166.

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 weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,350 when searching 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 $903 on momondo.

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

Best Price Found	$527
Fastest flight time	25h 12m
Direct flights	None
Airports in Bangkok	1 airport

The best one-way flight to Bangkok from St. Louis in the past 72 hours is $527. The best round-trip flight deal from St. Louis to Bangkok found on momondo in the last 72 hours is $973.

The fastest flight from St. Louis to Bangkok takes 25h 12m

There are no direct flights from St. Louis to Bangkok. Popular non-direct route for this connection is Lambert-St Louis Airport - Bangkok Suvarnabhumi Airport.

There is 1 airport near Bangkok: Bangkok Suvarnabhumi (BKK)

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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 25h 12m 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 10 as of July 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
Qatar Airways	PriceFrom $897	Free Cancellation	Rating 7.4 3,596 reviews	Search Qatar Airways flights
ANA	PriceFrom $1,053	Free Cancellation	Rating 8.4 898 reviews	Search ANA flights
Delta	PriceFrom $1,058	Free Cancellation	Rating 8.0 7,952 reviews	Search Delta flights
United Airlines	PriceFrom $1,067	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Japan Airlines	PriceFrom $1,080	Free Cancellation	Rating 8.3 1,512 reviews	Search Japan Airlines flights
American Airlines	PriceFrom $1,113	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Turkish Airlines	PriceFrom $1,116	Free Cancellation	Rating 7.3 3,896 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $1,176	Free Cancellation	Rating 7.1 9,692 reviews	Search Air Canada flights
Cathay Pacific	PriceFrom $1,228	Free Cancellation	Rating 7.6 929 reviews	Search Cathay Pacific flights
Finnair	PriceFrom $1,289	Free Cancellation	Rating 7.6 1,312 reviews	Search Finnair flights

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.

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Cheap flights from St. Louis to Bangkok from $527

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 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Bangkok

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

United Airlines flights from St. Louis to Bangkok

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

ANA flights from St. Louis to Bangkok

Our best ANA 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 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 January instead. Flights to Bangkok in January, while not as cheap as those in October, still average around $1,166.

What is the cheapest day to depart on your flight to Bangkok?

What is the cheapest time of day to depart on your flight to Bangkok?

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

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

Japan Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Lambert-St Louis to Bangkok

What airlines fly to Bangkok?

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

Best Price Found

Fastest flight time

Direct flights

Airports in Bangkok

How far is Lambert-St Louis to Bangkok by plane?

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

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

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

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

Best airlines flying from St. Louis to Bangkok

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

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Bangkok?

Can I find flights from St. Louis to Bangkok with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Bangkok?

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

An easier way to manage your Bangkok 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 Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok