Bangkok

$416+ Cheap flights from St. Louis (STL) to Bangkok

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Mar 13 — Mar 201
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Cheap flight deals from St. Louis to Bangkok

Cheapest flights from St. Louis to Bangkok
Explore the most affordable flight options available from St. Louis to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This oojo deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:14 pm
STL
-
BKK
2 stops36h 16m
Cathay Pacific
Sun 9/275:30 pm
BKK
-
STL
2 stops38h 33m
Cathay Pacific
Deal found 2/10$901
This SmartFares deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:32 pm
STL
-
BKK
2 stops28h 28m
Multiple Airlines
Sun 9/135:50 pm
BKK
-
STL
2 stops56h 36m
Multiple Airlines
Deal found 2/8$905
This oojo deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:00 am
STL
-
BKK
2 stops47h 15m
Cathay Pacific
Wed 3/1811:40 am
BKK
-
STL
2 stops23h 18m
Cathay Pacific
Deal found 2/11$907
This SmartFares deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:32 pm
STL
-
BKK
2 stops28h 28m
Multiple Airlines
Fri 9/181:10 pm
BKK
-
STL
2 stops37h 16m
Multiple Airlines
Deal found 2/9$925
This SmartFares deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:50 pm
STL
-
BKK
2 stops36h 50m
Multiple Airlines
Tue 4/281:10 pm
BKK
-
STL
2 stops38h 40m
Multiple Airlines
Deal found 2/8$930
This oojo deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:00 am
STL
-
BKK
2 stops38h 40m
Cathay Pacific
Thu 12/37:55 am
BKK
-
STL
2 stops29h 02m
Cathay Pacific
Deal found 2/11$931
This Air Canada deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1012:10 pm
STL
-
BKK
2 stops28h 55m
Air Canada
Tue 11/108:15 am
BKK
-
STL
2 stops44h 15m
Air Canada
Deal found 2/10$938
This SmartFares deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
-
BKK
2 stops40h 35m
Multiple Airlines
Thu 3/125:40 pm
BKK
-
STL
2 stops42h 19m
Multiple Airlines
Deal found 2/9$945
This oojo deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:47 pm
STL
-
BKK
2 stops32h 48m
STARLUX Airlines
Mon 3/95:40 pm
BKK
-
STL
2 stops56h 11m
STARLUX Airlines
Deal found 2/10$946
This oojo deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:00 am
STL
-
BKK
2 stops27h 15m
Cathay Pacific
Mon 3/912:45 pm
BKK
-
STL
2 stops47h 13m
Cathay Pacific
Deal found 2/11$951
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:41 am
STL
-
BKK
3 stops38h 44m
United Airlines
Mon 3/94:55 pm
BKK
-
STL
3 stops33h 54m
United Airlines
Deal found 2/9$952
This Cathay Pacific deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:11 pm
STL
-
BKK
2 stops34h 19m
Multiple Airlines
Tue 4/217:35 am
BKK
-
STL
2 stops28h 22m
Multiple Airlines
Deal found 2/8$953

Find flight deals from St. Louis to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.

Round-trip from

$907
(oojo)

One-way from

$416
(oojo)

Popular in

December

Cheapest in

January

Average price

$1,106
From Lambert-St Louis to Bangkok
One-way flight from Lambert-St Louis to Bangkok
Highest demand for flights based on searches. 6% potential increase in price ($92 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($57 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from St. Louis to Bangkok that are best for you.

Fly from

St. Louis

Fly to

Bangkok

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

7:41 am-11:25 am

3 stops38h 44m

Bangkok Suvarnabhumi

Mon 3/9

4:55 pm-2:49 pm

3 stops33h 54m

$952

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

2:47 pm-9:50 am

2 stops30h 03m

Bangkok Suvarnabhumi

Mon 3/9

5:50 pm-1:51 pm

2 stops32h 01m

$961

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/13

7:00 am-9:45 am

2 stops38h 45m

Bangkok Suvarnabhumi

Mon 4/20

10:50 am-2:51 pm

2 stops40h 01m

$970

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 4/7

8:30 am-9:35 am

2 stops37h 05m

Bangkok Suvarnabhumi

Tue 4/21

3:45 pm-9:25 am

3 stops29h 40m

$998

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 4/1

6:50 pm-6:00 pm

2 stops35h 10m

Bangkok Suvarnabhumi

Thu 4/30

7:35 am-10:59 pm

2 stops27h 24m

$1,006

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/13

8:30 am-9:35 am

2 stops37h 05m

Bangkok Suvarnabhumi

Mon 4/20

3:45 pm-9:25 am

3 stops29h 40m

$1,024

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 2/24

8:41 am-11:25 am

3 stops37h 44m

Bangkok Suvarnabhumi

Fri 2/27

4:55 pm-4:27 pm

2 stops36h 32m

$1,038

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 3/1

7:00 am-12:00 pm

2 stops40h 00m

$416

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/9

12:14 pm-9:25 pm

3 stops45h 11m

$425

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 3/1

10:11 pm-9:25 pm

3 stops58h 14m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 15 results
1
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Best time to book a flight from St. Louis to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Bangkok

How far ahead should I book a flight from St. Louis to Bangkok?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Bangkok. Price data was last updated on February 6, 2026.

Booking 10 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Bangkok?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $940). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated February 11, 2026.
Get a feel of what it's like to fly with ANA, Japan Airlines, and Delta from St. Louis to Bangkok by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
8.4
Very good
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
8.4
Very good

Food

7.8

Boarding

8.6

Entertainment

7.9

Crew

8.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to Bangkok?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Bangkok. You should not have trouble finding flights to Bangkok from Lambert-St Louis; the airport handles an average of 0 outbound flights to Bangkok per day. You should also have plenty of airline options to choose from since 9 airlines have flights from the St. Louis airport to Bangkok. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How long is the flight from St. Louis to Bangkok?

    A quick flight from St. Louis to Bangkok can take about 38h 44m. United Airlines provides one of the quickest options available for as low as $952. St. Louis and Bangkok are separated by a distance of 8737 mi.

  • What are the cheapest airlines flying from St. Louis to Bangkok round-trip?

    Cheapflights users have booked flights from St. Louis to Bangkok round-trip from $881. Other airlines that can offer you cheap pricing are American Airlines, from $954, and Japan Airlines, from $966. Delta is priced at 31% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Bangkok one-way?

    For one-way options, check prices for Japan Airlines. According to our data, you can fly for as low as $468. Users have also found prices from $495 and $531 on United Airlines and Delta, respectively.

  • Can I find deals for flights from St. Louis to Bangkok that include hotel bookings?

    Yes. In addition to deals on St. Louis to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Bangkok.

  • Can I find deals for business class flights from St. Louis to Bangkok?

    Yes. Cheapflights offers flight deals from St. Louis to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Bangkok?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $940). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from St. Louis to Bangkok

Discover the top 9 airlines that operate flights from St. Louis to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$881Average$1,448FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$954Average$1,351FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$966Average$1,131FlexibilityNo cancel feeOn-time79%
Cathay PacificCheapest$979Average$1,341FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$984Average$1,232FlexibilityNo cancel feeOn-time69%
ANACheapest$1,007Average$1,241FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,017Average$1,188FlexibilityNo cancel feeOn-time68%
Air CanadaCheapest$1,280Average$1,806FlexibilityNo cancel feeOn-time67%
FinnairCheapest$1,289Average$1,458FlexibilityNo cancel feeOn-time76%

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