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

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

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 41% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 10 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

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 10 as of July 2025.

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.

$469 Cheap Flights from St. Louis to Thailand in 2025

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Find the cheapest flights from St. Louis to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

7:23 am - 11:00 pmSTL-BKK

27h 37m2 stops

10:05 pm - 1:23 pmBKK-STL

27h 18m2 stops

$966Japan Airlines

Find Deal

월, 9월 22 - 수, 10월 1

8:25 am - 6:00 amSTL-BKK

33h 35m2 stops

7:00 am - 6:58 pmBKK-STL

23h 58m2 stops

$969

Find Deal

월, 8월 11 - 수, 8월 27

8:10 am - 4:35 amSTL-BKK

32h 25m2 stops

9:35 pm - 2:19 pmBKK-STL

28h 44m2 stops

$975ANA

Find Deal

수, 8월 27 - 수, 9월 3

8:20 am - 4:35 amSTL-BKK

32h 15m2 stops

7:00 am - 6:23 pmBKK-STL

23h 23m2 stops

$976ANA

Find Deal

화, 8월 26 - 화, 9월 2

7:30 am - 11:20 pmSTL-BKK

26h 50m2 stops

9:30 pm - 1:20 pmBKK-STL

28h 50m2 stops

$978Delta

Find Deal

월, 12월 8 - 화, 12월 16

6:00 am - 11:55 pmSTL-BKK

29h 55m2 stops

9:35 am - 7:42 pmBKK-STL

46h 07m2 stops

$987United Airlines

Find Deal

수, 9월 24 - 화, 10월 7

6:00 am - 11:55 pmSTL-BKK

29h 55m2 stops

7:00 am - 10:00 pmBKK-STL

27h 00m3 stops

$990United Airlines

Find Deal

수, 9월 24 - 목, 10월 2

6:00 am - 11:25 pmSTL-BKK

29h 25m2 stops

2:35 am - 9:16 pmBKK-STL

30h 41m2 stops

$1,028Delta

Find Deal

목, 8월 28 - 화, 9월 2

6:20 am - 10:50 amSTL-HKT

40h 30m2 stops

2:45 pm - 7:10 pmHKT-STL

40h 25m3 stops

$1,677Cathay Pacific

Find Deal

금, 9월 12 - 수, 9월 17

6:45 am - 10:50 amSTL-HKT

40h 05m2 stops

12:55 pm - 8:32 pmHKT-STL

43h 37m3 stops

$1,680Cathay Pacific

Find Deal

목, 8월 28 - 목, 9월 4

Delta flights from St. Louis to Thailand

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

Delta

Dec 8

STL7:30 amLambert-St Louis

26h 50m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Dec 16

BKK9:30 pmBangkok Suvarnabhumi

28h 50m

2 stops

STL1:20 pmLambert-St Louis

$978

Find similar

Delta

Aug 28

STL6:00 amLambert-St Louis

29h 25m

2 stops

BKK11:25 pmBangkok Suvarnabhumi

Sep 2

BKK2:35 amBangkok Suvarnabhumi

30h 41m

2 stops

STL9:16 pmLambert-St Louis

$1,028

Find similar

Delta

Sep 24

STL6:01 amLambert-St Louis

27h 44m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 28

BKK11:30 pmBangkok Suvarnabhumi

35h 39m

2 stops

STL11:09 pmLambert-St Louis

$1,029

Find similar

ANA flights from St. Louis to Thailand

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

ANA

Aug 27

STL8:10 amLambert-St Louis

32h 25m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 3

BKK9:35 pmBangkok Suvarnabhumi

28h 44m

2 stops

STL2:19 pmLambert-St Louis

$975

Find similar

ANA

Aug 26

STL8:20 amLambert-St Louis

32h 15m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 2

BKK7:00 amBangkok Suvarnabhumi

23h 23m

2 stops

STL6:23 pmLambert-St Louis

$976

Find similar

ANA

Aug 10

STL3:20 pmLambert-St Louis

50h 40m

2 stops

BKK6:00 amBangkok Suvarnabhumi

Sep 30

BKK1:55 pmBangkok Suvarnabhumi

40h 22m

2 stops

STL6:17 pmLambert-St Louis

$1,022

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

월 9/22

7:23 am-11:00 pm

2 stops27h 37m

Bangkok Suvarnabhumi

수 10/1

10:05 pm-1:23 pm

2 stops27h 18m

$966

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

월 8/11

8:25 am-6:00 am

2 stops33h 35m

Bangkok Suvarnabhumi

수 8/27

7:00 am-6:58 pm

2 stops23h 58m

$969

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

수 8/27

8:10 am-4:35 am

2 stops32h 25m

Bangkok Suvarnabhumi

수 9/3

9:35 pm-2:19 pm

2 stops28h 44m

$975

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

화 8/26

8:20 am-4:35 am

2 stops32h 15m

Bangkok Suvarnabhumi

화 9/2

7:00 am-6:23 pm

2 stops23h 23m

$976

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

월 12/8

7:30 am-11:20 pm

2 stops26h 50m

Bangkok Suvarnabhumi

화 12/16

9:30 pm-1:20 pm

2 stops28h 50m

$978

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

수 9/24

6:00 am-11:55 pm

2 stops29h 55m

Bangkok Suvarnabhumi

화 10/7

9:35 am-7:42 pm

2 stops46h 07m

$987

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

수 9/24

6:00 am-11:55 pm

2 stops29h 55m

Bangkok Suvarnabhumi

목 10/2

7:00 am-10:00 pm

3 stops27h 00m

$990

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

목 8/28

6:00 am-11:25 pm

2 stops29h 25m

Bangkok Suvarnabhumi

화 9/2

2:35 am-9:16 pm

2 stops30h 41m

$1,028

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

금 9/12

6:20 am-10:50 am

2 stops40h 30m

Phuket City

수 9/17

2:45 pm-7:10 pm

3 stops40h 25m

$1,677

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

목 8/28

6:45 am-10:50 am

2 stops40h 05m

Phuket City

목 9/4

12:55 pm-8:32 pm

3 stops43h 37m

$1,680

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 September is, on average, the cheapest month to fly to Thailand from St. Louis, with most prices found around $1,151. If you are unable to visit Thailand during the month of September, then departing from St. Louis during the month January is also very affordable. Most momondo users find prices during this month for around $1,154.

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

The cheapest day to depart on your flight to Thailand is on a Monday when prices can be found for as low as $1,334. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Thailand is Thursday, with ticket prices averaging around $1,546.

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

Flying to Thailand from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,339 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Thailand is at noon when prices are around $1,754.

How far in advance should I book a flight 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 $1,326 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 $908 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

Best Price Found	$469
Fastest flight time	25h 27m
Direct flights	None
Airports in Thailand	3 airports

The best one-way flight to Thailand from St. Louis in the past 72 hours is $469. The best round-trip flight deal from St. Louis to Thailand found on momondo in the last 72 hours is $966.

The fastest flight from St. Louis to Thailand takes 25h 27m

There are no direct flights from St. Louis to Thailand. Popular non-direct routes for this connection are Lambert-St Louis Airport - Bangkok Suvarnabhumi Airport and Lambert-St Louis Airport - Phuket City Airport.

There are 3 airports near Thailand: Phuket City (HKT), Bangkok Suvarnabhumi (BKK), Chiang Mai (CNX)

Search flight deals

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 10 as of July 2025.
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
Qatar Airways	PriceFrom $897	Free Cancellation	Rating 7.4 3,609 reviews	Search Qatar Airways flights
ANA	PriceFrom $1,053	Free Cancellation	Rating 8.4 922 reviews	Search ANA flights
United Airlines	PriceFrom $1,054	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Delta	PriceFrom $1,058	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Japan Airlines	PriceFrom $1,080	Free Cancellation	Rating 8.3 1,536 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 3,933 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $1,176	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada flights
Cathay Pacific	PriceFrom $1,228	Free Cancellation	Rating 7.6 949 reviews	Search Cathay Pacific flights
Finnair	PriceFrom $1,289	Free Cancellation	Rating 7.6 1,316 reviews	Search Finnair 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.