Suvarnabhumi

$491+ Cheap flights from St. Louis (STL) to Suvarnabhumi (BKK)

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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
May 25 — Jun 11
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Cheapflights Tip: The best prices from Lambert-St Louis to Bangkok Suvarnabhumi are usually found in October or January, booked 76 days in advance, depart on a Monday or Saturday and return on a Thursday

Cheap flight deals from St. Louis to Suvarnabhumi

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Suvarnabhumi (BKK). 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 May 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$937
(American Airlines)

One-way from

$491
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$1,337
Provider with most accurate pricing for Lambert-St Louis-Bangkok Suvarnabhumi flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Bangkok Suvarnabhumi flights.
From Lambert-St Louis to Bangkok Suvarnabhumi
One-way flight from Lambert-St Louis to Bangkok Suvarnabhumi
Highest demand for flights based on searches. 3% potential increase in price ($57 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($48 potential savings vs. average RT price).
Average for round-trip flights in May 2025

Find flight deals from St. Louis to Suvarnabhumi

Cheapest flights from St. Louis to Suvarnabhumi
Explore the most affordable flight options available from St. Louis to Suvarnabhumi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 20, 2025.

This American Airlines deal was found by Cheapflights users on 5/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/289:23 amSTL - BKK
2 stops25h 37mAmerican Airlines
Wed 9/39:45 amBKK - STL
2 stops25h 14mAmerican Airlines
Deal found 5/19$937
This Gurufare deal was found by Cheapflights users on 5/19. 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.
Thu 9/258:27 amSTL - BKK
2 stops32h 08mANA
Sun 10/59:35 pmBKK - STL
2 stops28h 44mANA
Deal found 5/19$975
This United Airlines deal was found by Cheapflights users on 5/19. 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.
Tue 11/116:45 amSTL - BKK
3 stops39h 05mUnited Airlines
Tue 11/189:25 amBKK - STL
2 stops24h 45mUnited Airlines
Deal found 5/19$987
This FlightHub deal was found by Cheapflights users on 5/19. 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.
Thu 8/287:23 amSTL - BKK
2 stops27h 37mJapan Airlines
Tue 9/212:25 amBKK - STL
2 stops34h 34mJapan Airlines
Deal found 5/19$993
This oojo deal was found by Cheapflights users on 5/19. 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 11/112:55 pmSTL - BKK
2 stops33h 10mChina Airlines
Mon 11/172:35 amBKK - STL
2 stops58h 21mChina Airlines
Deal found 5/19$1,059
This Orbitz deal was found by Cheapflights users on 5/20. 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.
Thu 10/163:57 pmSTL - BKK
2 stops36h 43mMultiple Airlines
Sun 10/2610:50 pmBKK - STL
2 stops52h 36mMultiple Airlines
Deal found 5/20$1,128
This oojo deal was found by Cheapflights users on 5/19. 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 10/57:59 pmSTL - BKK
2 stops28h 56mQatar Airways
Thu 10/302:00 amBKK - STL
2 stops32h 34mQatar Airways
Deal found 5/19$1,244
This Delta deal was found by Cheapflights users on 5/19. 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.
Sun 8/105:37 pmSTL - BKK
2 stops43h 28mDelta
Thu 8/212:35 amBKK - STL
2 stops32h 50mDelta
Deal found 5/19$1,298
This oojo deal was found by Cheapflights users on 5/19. 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.
Thu 5/226:52 amSTL - BKK
2 stops28h 58mCathay Pacific
Fri 5/307:00 pmBKK - STL
2 stops40h 51mCathay Pacific
Deal found 5/19$1,408
This IEagle deal was found by Cheapflights users on 5/19. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/166:41 amSTL - BKK
2 stops34h 49mFinnair
Sun 7/277:05 amBKK - STL
2 stops28h 54mFinnair
Deal found 5/19$4,623
This Travelocity deal was found by Cheapflights users on 5/19. 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.
Wed 9/109:15 amSTL - BKK
2 stops24h 40mAir Canada
Sun 9/147:45 amBKK - STL
2 stops23h 48mAir Canada
Deal found 5/19$5,219

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Suvarnabhumi 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 May 20, 2025.
Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

St. Louis

Fly to

Suvarnabhumi

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

9:23 am-11:00 pm

2 stops25h 37m

Bangkok Suvarnabhumi

Wed 9/3

9:45 am-10:59 pm

2 stops25h 14m

$937

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 9/25

8:27 am-4:35 am

2 stops32h 08m

Bangkok Suvarnabhumi

Sun 10/5

9:35 pm-2:19 pm

2 stops28h 44m

$975

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 11/11

6:45 am-10:50 am

3 stops39h 05m

Bangkok Suvarnabhumi

Tue 11/18

9:25 am-9:10 pm

2 stops24h 45m

$987

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

7:23 am-11:00 pm

2 stops27h 37m

Bangkok Suvarnabhumi

Tue 9/2

12:25 am-10:59 pm

2 stops34h 34m

$993

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 11/11

2:55 pm-1:05 pm

2 stops33h 10m

Bangkok Suvarnabhumi

Mon 11/17

2:35 am-11:56 pm

2 stops58h 21m

$1,059

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 10/5

7:59 pm-12:55 pm

2 stops28h 56m

Bangkok Suvarnabhumi

Thu 10/30

2:00 am-10:34 pm

2 stops32h 34m

$1,244

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 8/10

7:15 pm-1:05 am

2 stops41h 50m

Bangkok Suvarnabhumi

Thu 8/21

2:35 am-11:25 pm

2 stops32h 50m

$1,298

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 9/24

5:49 pm-11:10 am

3 stops29h 21m

Bangkok Suvarnabhumi

Sat 10/4

3:10 pm-2:55 pm

2 stops35h 45m

$1,394

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/16

6:41 am-5:30 am

2 stops34h 49m

Bangkok Suvarnabhumi

Sun 7/27

7:05 am-11:59 pm

2 stops28h 54m

$4,623

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 9/10

9:15 am-9:55 pm

2 stops24h 40m

Bangkok Suvarnabhumi

Sun 9/14

7:45 am-7:33 pm

2 stops23h 48m

$5,219

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 16 results
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Compare providers for flights from St. Louis to Suvarnabhumi

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Suvarnabhumi in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Bangkok Suvarnabhumi Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Bangkok Suvarnabhumi Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from St. Louis-Bangkok Suvarnabhumi Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Bangkok Suvarnabhumi Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Bangkok Suvarnabhumi Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Suvarnabhumi

Have a flexible travel schedule? Discover the best time to fly to Suvarnabhumi 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 Suvarnabhumi Airport

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Suvarnabhumi. Price data was last updated on May 16, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Bangkok Suvarnabhumi Airport, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $955). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,574). 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 Suvarnabhumi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 20, 2025.

It’s typically best to fly out from St. Louis to Bangkok Suvarnabhumi Airport 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 Suvarnabhumi Airport?

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

Travelers seeking maximum savings on their St. Louis to Bangkok Suvarnabhumi Airport 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 Suvarnabhumi by month

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

In terms of precipitation, rainfall in Bangkok Suvarnabhumi Airport 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 Suvarnabhumi Airport when rainfall is around 0.4 in.

Temperature in Suvarnabhumi by month

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

If weather is an important factor for your trip to Bangkok Suvarnabhumi Airport, 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 Suvarnabhumi

Get insights into the airlines that provide service to Suvarnabhumi. 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 Suvarnabhumi. Reviews last updated May 20, 2025.
Read reviews from past customers who have flown Japan Airlines, China Airlines and ANA 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.

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
8.3
Very good

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
8.0
Very good

Entertainment

7.8

Overall

8.3

Comfort

8.2

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Suvarnabhumi. 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 Suvarnabhumi?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Bangkok Suvarnabhumi from St. Louis. Booking flights from Lambert-St Louis (STL) to Bangkok Suvarnabhumi should be relatively easy as there are 0 daily outbound flights to Bangkok Suvarnabhumi from 11 different airlines.

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

    American Airlines, at $937, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include ANA and United Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 32% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Japan Airlines, which is currently one of the cheapest options available, starting at $491. ANA flights start at $543 while deals on United Airlines start at $571 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Suvarnabhumi 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 Suvarnabhumi Airport?

    Currently, March is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $955). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,574). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Sattahip
Cha-am
Chonburi
Kanchanaburi
Phetchaburi
Ko Samet
Pak Chong
Ko Lan

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Alternative routes for St. Louis to Suvarnabhumi

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from St. Louis to Suvarnabhumi

Discover the top 10 airlines that operate flights from St. Louis to Suvarnabhumi. 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 May 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$897Average$1,769FlexibilityNo cancel feeOn-time68%
Japan AirlinesCheapest$1,080Average$1,164FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,113Average$1,161FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,114Average$1,196FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$1,116Average$1,301FlexibilityNo cancel feeOn-time77%
ANACheapest$1,128Average$1,197FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,144Average$1,379FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$1,176Average$1,786FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,233Average$1,397FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$1,259Average$1,339FlexibilityNo cancel feeOn-time81%

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