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Suvarnabhumi

$646+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Bangkok Suvarnabhumi are usually found in February 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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,070
(Travelocity)

One-way from

$646
(Delta)

Popular in

December

Cheapest in

February

Average price

$1,344
Provider with most accurate pricing for Lambert-St Louis-Bangkok Suvarnabhumi flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Bangkok Suvarnabhumi flights.
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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. 1% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 27, 2025.

This Ovago deal was found by Cheapflights users on 3/26. 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.
Tue 10/287:00 amSTL - BKK
2 stops48h 25mQatar Airways
Tue 11/43:00 amBKK - STL
2 stops33h 56mQatar Airways
Deal found 3/26$1,046
This Travelocity deal was found by Cheapflights users on 3/26. 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 5/76:30 amSTL - BKK
2 stops28h 40mMultiple Airlines
Tue 5/201:20 amBKK - STL
2 stops34h 44mMultiple Airlines
Deal found 3/26$1,070
This Gurufare deal was found by Cheapflights users on 3/27. 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 51mANA
Deal found 3/27$1,090
This Delta deal was found by Cheapflights users on 3/27. 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.
Thu 8/288:55 amSTL - BKK
2 stops28h 10mDelta
Tue 9/22:35 amBKK - STL
2 stops33h 04mDelta
Deal found 3/27$1,104
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Tue 10/2812:03 pmSTL - BKK
2 stops29h 02mAmerican Airlines
Wed 11/58:05 amBKK - STL
2 stops27h 24mAmerican Airlines
Deal found 3/26$1,113
This United deal was found by Cheapflights users on 3/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3011:00 amSTL - BKK
2 stops48h 55mUnited Airlines
Wed 5/289:35 amBKK - STL
2 stops47h 50mUnited Airlines
Deal found 3/25$1,120
This Gurufare deal was found by Cheapflights users on 3/26. 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 4/712:00 pmSTL - BKK
2 stops23h 50mCathay Pacific
Mon 4/284:25 pmBKK - STL
2 stops37h 37mCathay Pacific
Deal found 3/26$1,380
This Ovago deal was found by Cheapflights users on 3/25. 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 6/210:36 amSTL - BKK
2 stops54h 54mFinnair
Mon 6/97:05 amBKK - STL
2 stops28h 49mFinnair
Deal found 3/25$1,516
This Gurufare deal was found by Cheapflights users on 3/25. 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 7/217:00 amSTL - BKK
2 stops44h 10mJapan Airlines
Fri 7/2512:25 amBKK - STL
2 stops34h 55mJapan Airlines
Deal found 3/25$1,774

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 March 27, 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 5/7

6:30 am-11:10 pm

2 stops28h 40m

Bangkok Suvarnabhumi

Tue 5/20

1:20 am-12:04 am

2 stops34h 44m

$1,070

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-2:26 pm

2 stops28h 51m

$1,090

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

8:55 am-1:05 am

2 stops28h 10m

Bangkok Suvarnabhumi

Tue 9/2

2:35 am-11:39 pm

2 stops33h 04m

$1,104

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 4/30

11:00 am-11:55 pm

2 stops48h 55m

Bangkok Suvarnabhumi

Wed 5/28

9:35 am-9:25 pm

2 stops47h 50m

$1,120

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 4/30

6:30 am-7:20 am

2 stops36h 50m

Bangkok Suvarnabhumi

Tue 5/27

2:30 am-7:29 pm

2 stops28h 59m

$1,280

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/7

12:00 pm-11:50 pm

2 stops23h 50m

Bangkok Suvarnabhumi

Mon 4/28

4:25 pm-6:02 pm

2 stops37h 37m

$1,380

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 6/2

10:36 am-5:30 am

2 stops54h 54m

Bangkok Suvarnabhumi

Mon 6/9

7:05 am-11:54 pm

2 stops28h 49m

$1,516

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 7/21

7:00 am-3:10 pm

2 stops44h 10m

Bangkok Suvarnabhumi

Fri 7/25

12:25 am-11:20 pm

2 stops34h 55m

$1,774

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 8/1

9:15 am-4:35 am

2 stops31h 20m

Bangkok Suvarnabhumi

Thu 12/4

10:50 pm-3:26 pm

2 stops53h 36m

$2,857

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 4/5

6:00 am-11:40 pm

2 stops29h 40m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Bangkok Suvarnabhumi Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 21, 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 $963). 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 March 27, 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 March 27, 2025.
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very good
1,440 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
ANA
8.3
Very good
828 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Delta
8.0
Very good
7,895 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Finnair
7.6
Good
1,267 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Cathay Pacific
7.5
Good
837 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Boarding

8.4

Overall

8.3

Crew

8.7

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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 10 different airlines.

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

    ANA, at $1,090, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Delta and United Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 23% less than the average price by searching for these airlines.

  • 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 $963). 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
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Kanchanaburi
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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
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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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$210Average$1,195FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$1,080Average$1,171FlexibilityNo cancel feeOn-time79%
DeltaCheapest$1,104Average$1,318FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,113Average$1,158FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,116Average$1,320FlexibilityNo cancel feeOn-time77%
ANACheapest$1,125Average$1,245FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$1,176Average$1,747FlexibilityNo cancel feeOn-time67%
Qatar AirwaysCheapest$1,213Average$1,380FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,238Average$1,419FlexibilityNo cancel feeOn-time72%
FinnairCheapest$1,340Average$1,558FlexibilityNo cancel feeOn-time76%
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