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Suvarnabhumi

$533+ 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
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$978
(Delta)

One-way from

$533
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$1,558
From Lambert-St Louis to Bangkok Suvarnabhumi
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One-way flight from Lambert-St Louis to Bangkok Suvarnabhumi
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Highest demand for flights based on searches. 3% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 7/306:00 amSTL - BKK
2 stops27h 45mDelta
Tue 9/22:35 amBKK - STL
2 stops30h 41mDelta
Deal found 6/12$978
This Gurufare deal was found by Cheapflights users on 6/12. 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 8/289:17 amSTL - BKK
2 stops31h 18mANA
Wed 9/39:35 pmBKK - STL
2 stops28h 44mANA
Deal found 6/12$980
This Fareboom deal was found by Cheapflights users on 6/11. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amSTL - BKK
2 stops26h 30mMultiple Airlines
Thu 12/48:05 amBKK - STL
2 stops28h 51mMultiple Airlines
Deal found 6/11$987
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:35 pmSTL - BKK
3 stops32h 15mUnited Airlines
Thu 12/47:10 amBKK - STL
2 stops27h 00mUnited Airlines
Deal found 6/11$990
This oojo deal was found by Cheapflights users on 6/12. 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 10/66:33 amSTL - BKK
2 stops41h 37mChina Airlines
Mon 11/32:35 amBKK - STL
2 stops49h 30mChina Airlines
Deal found 6/12$1,018
This oojo deal was found by Cheapflights users on 6/11. 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.
Thu 11/272:55 pmSTL - BKK
2 stops31h 15mEVA Air
Wed 12/32:15 amBKK - STL
2 stops48h 37mEVA Air
Deal found 6/11$1,097
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1411:17 amSTL - BKK
2 stops25h 48mKorean Air
Mon 6/169:40 pmBKK - STL
2 stops37h 42mKorean Air
Deal found 6/10$1,470
This Qatar Airways deal was found by Cheapflights users on 6/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/25:00 amSTL - BKK
2 stops43h 55mQatar Airways
Tue 9/22:30 amBKK - STL
2 stops32h 20mQatar Airways
Deal found 6/12$1,532
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:55 pmSTL - BKK
2 stops27h 15mFinnair
Wed 12/243:00 pmBKK - STL
2 stops40h 19mFinnair
Deal found 6/10$1,740
This Fareboom deal was found by Cheapflights users on 6/12. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:55 pmSTL - BKK
2 stops42h 10mAsiana Airlines
Fri 12/2611:55 pmBKK - STL
2 stops37h 01mAsiana Airlines
Deal found 6/12$1,747
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:15 pmSTL - BKK
2 stops49h 00mAir Canada
Wed 12/248:00 amBKK - STL
2 stops44h 26mAir Canada
Deal found 6/11$1,812

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 June 12, 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

Wed 7/30

6:00 am-9:45 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 9/2

2:35 am-9:16 pm

2 stops30h 41m

$978

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

9:17 am-4:35 am

2 stops31h 18m

Bangkok Suvarnabhumi

Wed 9/3

9:35 pm-2:19 pm

2 stops28h 44m

$980

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 8/2

5:41 pm-4:35 am

2 stops46h 54m

Bangkok Suvarnabhumi

Mon 9/8

9:35 am-4:53 pm

2 stops43h 18m

$1,024

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/7

7:32 pm-11:20 am

2 stops27h 48m

Bangkok Suvarnabhumi

Mon 8/11

4:45 pm-11:59 pm

2 stops43h 14m

$1,268

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 8/16

7:32 pm-11:20 am

2 stops27h 48m

Bangkok Suvarnabhumi

Mon 8/18

4:45 pm-2:26 pm

2 stops33h 41m

$1,280

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 8/2

5:00 am-12:55 pm

2 stops43h 55m

Bangkok Suvarnabhumi

Tue 9/2

2:30 am-10:50 pm

2 stops32h 20m

$1,532

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 7/8

7:32 pm-9:45 am

2 stops26h 13m

Bangkok Suvarnabhumi

Mon 7/14

2:40 am-6:35 pm

2 stops51h 55m

$1,549

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/6

7:01 am-11:00 pm

2 stops27h 59m

Bangkok Suvarnabhumi

Sat 8/30

8:05 am-7:21 pm

2 stops23h 16m

$2,374

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 8/31

4:00 pm-9:55 pm

2 stops41h 55m

Bangkok Suvarnabhumi

Fri 11/14

8:00 am-3:26 pm

2 stops44h 26m

$5,109

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 7/28

6:14 am-5:50 am

2 stops35h 36m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 14 results
1
2

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 June 9, 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 $953). 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 June 12, 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 June 12, 2025.
Read reviews from past customers who have flown EVA Air, Japan Airlines and China Airlines 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.
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Japan Airlines
8.3
Very good
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
ANA
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Delta
8.0
Very good
7,950 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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?

    Delta, at $978, 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 28% 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 $533. ANA flights start at $534 while deals on Delta start at $541 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 $953). 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?

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Cha-am
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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.
Kansas City to Suvarnabhumi flights
Springfield to Suvarnabhumi flights
Kansas City to Don Mueang Intl flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$897Average$1,365FlexibilityNo cancel feeOn-time68%
ANACheapest$1,053Average$1,183FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$1,080Average$1,155FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,102Average$1,169FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,114Average$1,197FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$1,116Average$1,301FlexibilityNo cancel feeOn-time77%
DeltaCheapest$1,144Average$1,379FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$1,176Average$1,786FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,228Average$1,395FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$1,259Average$1,339FlexibilityNo cancel feeOn-time81%

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