What airlines fly to Thailand?

United Airlines, Cathay Pacific and Delta are the top three most popular airlines that fly to Thailand from St. Louis according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 8 different airlines that fly to Thailand 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 Thailand?

Qatar Airways, Delta, and United Airlines are the most popular carriers operating from Lambert-St Louis to Thailand

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

Prices for flights from Lambert-St Louis Airport to Thailand are updated daily.

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

The number of operators available for flights from Lambert-St Louis Airport to Thailand is 8 as of June 2026.

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

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 Thailand.

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

The travel and health documents you'll need for your trip to Thailand 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 Thailand. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$589 Cheap Flights from St. Louis to Thailand in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:04 pm - 2:50 pm

STL

BKK

30h 46m

2 stops

12:15 pm - 9:13 pm

BKK

STL

45h 58m

2 stops

$1,016Multiple Airlines

Mon, Nov 16 - Wed, Dec 16

9:44 am - 11:50 pm

STL

BKK

26h 06m

2 stops

8:50 pm - 1:17 pm

BKK

STL

29h 27m

2 stops

$1,026Etihad Airways

Thu, Aug 20 - Wed, Nov 18

10:22 am - 6:45 am

STL

BKK

32h 23m

2 stops

3:55 pm - 7:42 pm

BKK

STL

39h 47m

2 stops

$1,030Etihad Airways

Wed, Aug 19 - Fri, Sep 4

10:22 am - 6:45 am

STL

BKK

32h 23m

2 stops

2:40 pm - 5:54 pm

BKK

STL

40h 14m

2 stops

$1,038Multiple Airlines

Thu, Aug 20 - Wed, Nov 18

10:22 am - 11:50 pm

STL

BKK

25h 28m

2 stops

3:15 am - 8:44 pm

BKK

STL

29h 29m

2 stops

$1,041Etihad Airways

Mon, Aug 31 - Tue, Sep 8

2:50 pm - 11:20 pm

STL

BKK

43h 30m

2 stops

2:40 pm - 5:54 pm

BKK

STL

40h 14m

2 stops

$1,049Etihad Airways

Wed, Nov 18 - Wed, Nov 25

6:29 am - 7:45 am

STL

HKT

37h 16m

2 stops

9:20 am - 11:59 pm

HKT

STL

50h 39m

2 stops

$1,341Qatar Airways

Mon, Sep 28 - Fri, Oct 2

7:30 am - 10:55 pm

STL

CNX

26h 25m

2 stops

12:15 am - 11:18 pm

CNX

STL

36h 03m

2 stops

$1,356Delta

Mon, Nov 2 - Mon, Nov 16

6:29 am - 7:45 am

STL

HKT

37h 16m

2 stops

9:20 am - 11:40 pm

HKT

STL

50h 20m

2 stops

$1,376Qatar Airways

Mon, Sep 28 - Fri, Oct 2

2:40 pm - 5:20 pm

STL

HKT

38h 40m

2 stops

11:50 am - 10:41 pm

HKT

STL

46h 51m

2 stops

$1,421Cathay Pacific

Wed, Aug 5 - Wed, Aug 12

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STARLUX Airlines flights from St. Louis to Thailand

Our best STARLUX Airlines deals on St. Louis to Thailand flight tickets

STARLUX Airlines

Oct 10

STL6:00 amLambert-St Louis

42h 00m

2 stops

BKK12:00 pmBangkok Suvarnabhumi

Nov 10

BKK1:45 pmBangkok Suvarnabhumi

37h 30m

2 stops

STL2:15 pmLambert-St Louis

$1,162

STARLUX Airlines

Oct 10

STL6:00 amLambert-St Louis

42h 00m

2 stops

BKK12:00 pmBangkok Suvarnabhumi

Nov 10

BKK1:45 pmBangkok Suvarnabhumi

37h 30m

2 stops

STL2:15 pmLambert-St Louis

$1,163

STARLUX Airlines

Nov 1

STL7:00 amLambert-St Louis

44h 30m

2 stops

BKK4:30 pmBangkok Suvarnabhumi

Nov 8

BKK5:40 pmBangkok Suvarnabhumi

43h 16m

2 stops

STL11:56 pmLambert-St Louis

$1,182

Lufthansa flights from St. Louis to Thailand

Our best Lufthansa deals on St. Louis to Thailand flight tickets

Lufthansa

Nov 16

STL1:08 pmLambert-St Louis

36h 42m

2 stops

BKK2:50 pmBangkok Suvarnabhumi

Nov 24

BKK11:30 pmBangkok Suvarnabhumi

54h 26m

2 stops

STL4:56 pmLambert-St Louis

$1,175

Lufthansa

Nov 15

STL3:40 pmLambert-St Louis

41h 30m

2 stops

BKK10:10 pmBangkok Suvarnabhumi

Nov 24

BKK11:30 pmBangkok Suvarnabhumi

54h 26m

2 stops

STL4:56 pmLambert-St Louis

$1,202

Lufthansa

Nov 15

STL3:40 pmLambert-St Louis

41h 30m

2 stops

BKK10:10 pmBangkok Suvarnabhumi

Nov 26

BKK4:45 pmBangkok Suvarnabhumi

34h 00m

2 stops

STL1:45 pmLambert-St Louis

$1,206

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 11/16

7:04 pm-2:50 pm

2 stops30h 46m

Bangkok Suvarnabhumi

Wed 12/16

12:15 pm-9:13 pm

2 stops45h 58m

$1,016

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

9:44 am-11:50 pm

2 stops26h 06m

Bangkok Suvarnabhumi

Wed 11/18

8:50 pm-1:17 pm

2 stops29h 27m

$1,026

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/19

10:22 am-6:45 am

2 stops32h 23m

Bangkok Suvarnabhumi

Fri 9/4

3:55 pm-7:42 pm

2 stops39h 47m

$1,030

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

10:22 am-6:45 am

2 stops32h 23m

Bangkok Suvarnabhumi

Wed 11/18

2:40 pm-5:54 pm

2 stops40h 14m

$1,038

Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 8/31

10:22 am-11:50 pm

2 stops25h 28m

Bangkok Suvarnabhumi

Tue 9/8

3:15 am-8:44 pm

2 stops29h 29m

$1,041

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 11/18

2:50 pm-11:20 pm

2 stops43h 30m

Bangkok Suvarnabhumi

Wed 11/25

2:40 pm-5:54 pm

2 stops40h 14m

$1,049

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Mon 9/28

6:29 am-7:45 am

2 stops37h 16m

Phuket City

Fri 10/2

9:20 am-11:59 pm

2 stops50h 39m

$1,341

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 11/2

7:30 am-10:55 pm

2 stops26h 25m

Chiang Mai

Mon 11/16

12:15 am-11:18 pm

2 stops36h 03m

$1,356

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Mon 9/28

6:29 am-7:45 am

2 stops37h 16m

Phuket City

Fri 10/2

9:20 am-11:40 pm

2 stops50h 20m

$1,376

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Wed 8/5

2:40 pm-5:20 pm

2 stops38h 40m

Phuket City

Wed 8/12

11:50 am-10:41 pm

2 stops46h 51m

$1,421

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 Thailand

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 Thailand?

The month of February is, on average, the cheapest month to fly to Thailand from St. Louis, with most prices found around $167. If you are unable to visit Thailand during the month of February, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $853.

How far in advance should I book a flight from St. Louis to Thailand?

You are more likely to see cheaper flights to Thailand from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,294 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from St. Louis for as low as $1,015 on momondo.

Cheap St. Louis to Thailand flight deals and tips

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

Fastest flight time	25h 28m
Direct flights	None

The fastest flight from St. Louis to Thailand takes 25h 28m

There are no direct flights from St. Louis to Thailand. There are no popular flight routes from St. Louis to Thailand.

Search flight deals

Frequently asked questions about flying from St. Louis to Thailand

When did momondo last update prices for flights from Lambert-St Louis Airport to Thailand?
Prices for flights from Lambert-St Louis Airport to Thailand are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Thailand?
The number of operators available for flights from Lambert-St Louis Airport to Thailand is 8 as of June 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Thailand?
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 Thailand.
What documentation or ID do you need to fly to Thailand?
The travel and health documents you'll need for your trip to Thailand 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 Thailand. 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 Thailand

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $881	Free Cancellation	Rating 7.8 8,424 reviews	Search Delta flights
Cathay Pacific	PriceFrom $927	Free Cancellation	Rating 7.6 1,388 reviews	Search Cathay Pacific flights
Japan Airlines	PriceFrom $929	Free Cancellation	Rating 8.3 1,845 reviews	Search Japan Airlines flights
American Airlines	PriceFrom $954	Free Cancellation	Rating 7.1 11,746 reviews	Search American Airlines flights
United Airlines	PriceFrom $982	Free Cancellation	Rating 7.4 9,875 reviews	Search United Airlines flights
ANA	PriceFrom $1,007	Free Cancellation	Rating 8.3 1,251 reviews	Search ANA flights
EVA Air	PriceFrom $1,048	Free Cancellation	Rating 8.5 1,481 reviews	Search EVA Air flights
Qatar Airways	PriceFrom $1,094	Free Cancellation	Rating 7.3 3,730 reviews	Search Qatar Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Thailand. momondo saves you time and could save you money on your trip.

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

All flight searches from St. Louis to Thailand on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Thailand.

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

Yes momondo offers price alerts on flights to Thailand from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.