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$582+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jan 6 — Jan 131
Mon 1/6
Mon 1/13
1 adult, Economy
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The best prices from Lambert-St Louis to Bangkok are usually found in September or January, booked 63 days in advance, depart on a Monday or Saturday and return on a Thursday

Cheap 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 January 1, 2025.

Round-trip from

$1,118
(Orbitz)

One-way from

$582
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,263
From Lambert-St Louis to Bangkok
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One-way flight from Lambert-St Louis to Bangkok
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High demand for flights, 1% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find 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 January 1, 2025.

This Orbitz deal was found by Cheapflights users on 12/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/167:00 amSTL - BKK
2 stops28h 20mMultiple Airlines
Sun 2/2311:55 pmBKK - STL
2 stops37h 04mMultiple Airlines
Deal found 12/31$1,118
This Delta deal was found by Cheapflights users on 1/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/176:00 amSTL - BKK
2 stops29h 45mDelta
Mon 3/241:00 amBKK - STL
2 stops34h 31mDelta
Deal found 1/1$1,144
This United Airlines deal was found by Cheapflights users on 12/31. 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.
Thu 8/216:15 amSTL - BKK
2 stops34h 20mUnited Airlines
Sun 8/247:00 amBKK - STL
2 stops29h 27mUnited Airlines
Deal found 12/31$1,150
This Travelocity deal was found by Cheapflights users on 12/31. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:15 amSTL - BKK
2 stops45h 15mANA
Sun 5/117:00 amBKK - STL
2 stops43h 48mANA
Deal found 12/31$1,224
This Ovago deal was found by Cheapflights users on 12/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/176:00 amSTL - BKK
2 stops27h 30mKorean Air
Sun 3/309:40 pmBKK - STL
2 stops37h 23mKorean Air
Deal found 12/30$1,249
This oojo deal was found by Cheapflights users on 12/31. 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.
Tue 2/115:40 amSTL - BKK
2 stops29h 30mCathay Pacific
Mon 2/2411:40 amBKK - STL
2 stops24h 28mCathay Pacific
Deal found 12/31$1,266
This oojo deal was found by Cheapflights users on 12/31. 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 4/76:44 amSTL - BKK
2 stops35h 31mQatar Airways
Sun 4/272:30 amBKK - STL
2 stops31h 40mQatar Airways
Deal found 12/31$1,412
This Gurufare deal was found by Cheapflights users on 1/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/177:04 amSTL - BKK
2 stops44h 16mJapan Airlines
Fri 2/288:05 amBKK - STL
2 stops28h 03mJapan Airlines
Deal found 1/1$1,413
This Air Canada deal was found by Cheapflights users on 1/1. 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 1/113:50 pmSTL - BKK
2 stops49h 25mAir Canada
Fri 3/78:00 amBKK - STL
2 stops44h 06mAir Canada
Deal found 1/1$1,608
This Finnair deal was found by Cheapflights users on 12/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:23 pmSTL - BKK
2 stops47h 07mFinnair
Tue 6/247:05 amBKK - STL
2 stops47h 20mFinnair
Deal found 12/30$1,617
This FlightHub deal was found by Cheapflights users on 12/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/103:15 pmSTL - BKK
2 stops31h 50mEmirates
Thu 11/272:00 amBKK - STL
2 stops30h 25mEmirates
Deal found 12/31$1,841

Find flights from St. Louis to Bangkok within your budget

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 January 1, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 2/16

7:00 am-12:20 am

2 stops28h 20m

Bangkok Suvarnabhumi

Sun 2/23

11:55 pm-11:59 pm

2 stops37h 04m

$1,118

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 1/19

11:30 am-6:35 am

2 stops30h 05m

Bangkok Suvarnabhumi

Wed 1/22

3:15 pm-12:16 pm

2 stops34h 01m

$1,127

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 2/6

4:36 pm-12:05 am

2 stops42h 29m

Bangkok Suvarnabhumi

Thu 3/6

7:10 am-5:53 pm

2 stops23h 43m

$1,160

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/17

6:00 am-9:30 pm

2 stops27h 30m

Bangkok Suvarnabhumi

Sun 3/30

9:40 pm-11:03 pm

2 stops37h 23m

$1,249

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 2/11

5:40 am-12:10 am

2 stops29h 30m

Bangkok Suvarnabhumi

Mon 2/24

11:40 am-11:08 pm

2 stops24h 28m

$1,266

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/7

6:44 am-6:15 am

2 stops35h 31m

Bangkok Suvarnabhumi

Sun 4/27

2:30 am-10:10 pm

2 stops31h 40m

$1,412

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 5/28

7:00 am-5:30 am

2 stops34h 30m

Bangkok Suvarnabhumi

Wed 6/25

7:05 am-11:17 pm

2 stops28h 12m

$1,611

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 5/25

1:30 pm-9:55 pm

2 stops44h 25m

Bangkok Suvarnabhumi

Tue 6/17

7:35 am-8:01 pm

2 stops24h 26m

$1,684

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/17

7:07 am-4:20 pm

2 stops45h 13m

Bangkok Suvarnabhumi

Sun 3/30

9:45 am-11:09 pm

2 stops49h 24m

$1,922

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 1/18

4:40 pm-11:20 pm

2 stops41h 40m

Bangkok Suvarnabhumi

Fri 1/24

1:00 am-11:37 pm

2 stops35h 37m

$2,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 19 results
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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.

Travel insights for flights from St. Louis to Bangkok

Get recent, data-driven insights about flights from St. Louis to Bangkok including ideal travel times, pricing trends, and more.

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 December 27, 2024.

Booking 63 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, October is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $996). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,585). 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.

What is the cheapest time of day to fly from STL to BKK?

Find hourly flight availability from St. Louis to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 1, 2025.

It’s typically best to fly out from St. Louis to Bangkok in the morning. Doing so could potentially save you 24% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from St. Louis to Bangkok?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Bangkok. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Bangkok flight should consider departing on Monday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Bangkok by month

Plan your trip to Bangkok by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bangkok ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Bangkok when rainfall is around 0.4 in.

Temperature in Bangkok by month

Plan your trip to Bangkok by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bangkok, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 January 1, 2025.
Read reviews from past customers who have flown Qatar Airways, Turkish Airlines and Delta from St. Louis to Bangkok. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,027 reviews
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

ANA
8.4
Very good
844 reviews
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,443 reviews
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Emirates
8.1
Very good
3,362 reviews
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,537 reviews
Korean Air
8.5
Very good
1,027 reviews

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

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 11 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.

  • 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 $1,144. Other airlines that can offer you cheap pricing are United Airlines, from $1,155, and Korean Air, from $1,249. Delta is priced at 25% 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 Delta. According to our data, you can fly for as low as $605. Users have also found prices from $635 and $647 on ANA and Air Canada, respectively.

  • Where are the most common layover locations when flying from St. Louis to Bangkok?

    Flights departing from St. Louis and landing in Bangkok layover in Doha most frequently.

  • What are some popular things to do or see while on a layover in Doha?

    The majority of Doha visitors spend their time at Museum of Islamic Art, Katara Cultural Village, and Aspire Tower. Travelers on a layover in Doha can visit Museum of Islamic Art, Katara Cultural Village, and Aspire Tower, by traveling 5.2 mi, 8.7 mi, and 10.6 mi, respectively after landing at Doha Hamad Intl. Travelers can book a car rental at Doha Hamad Intl for about $32 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for St. Louis to Bangkok flights?

    Of the flights from St. Louis to Bangkok that have layovers, the fewest flights stop in Chicago.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $996). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,585). 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 10 airlines flying from St. Louis to Bangkok

Discover the top 10 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 January 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,084Average$1,196FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,113Average$1,178FlexibilityNo cancel feeOn-time69%
ANACheapest$1,125Average$1,417FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$1,149Average$1,546FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,149Average$1,343FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$1,158Average$1,347FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$1,176Average$1,638FlexibilityNo cancel feeOn-time67%
FinnairCheapest$1,249Average$1,674FlexibilityNo cancel feeOn-time76%
Cathay PacificCheapest$1,265Average$1,516FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,319Average$1,381FlexibilityNo cancel feeOn-time68%
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