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Suvarnabhumi

$429+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Bangkok Suvarnabhumi are usually found in September or October, booked 81 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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$970
(oojo)

One-way from

$429
(Trip.com)

Popular in

July

Cheapest in

September

Average price

$1,201
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. 9% potential increase in price ($134 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 6, 2025.

This Delta deal was found by Cheapflights users on 11/6. 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.
Mon 12/16:40 amSTL - BKK
2 stops29h 05mDelta
Thu 12/182:05 amBKK - STL
2 stops34h 22mDelta
Deal found 11/6$1,018
This oojo deal was found by Cheapflights users on 11/5. 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 11/68:39 amSTL - BKK
2 stops37h 01mCathay Pacific
Sun 11/237:55 amBKK - STL
2 stops38h 01mCathay Pacific
Deal found 11/5$1,027
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Sat 11/293:14 pmSTL - BKK
2 stops44h 06mUnited Airlines
Mon 12/154:55 pmBKK - STL
3 stops32h 44mUnited Airlines
Deal found 11/6$1,047
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/135:29 pmSTL - BKK
2 stops52h 56mUnited Airlines
Mon 11/244:55 pmBKK - STL
3 stops34h 29mUnited Airlines
Deal found 11/5$1,056
This Ovago deal was found by Cheapflights users on 11/5. 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.
Thu 11/137:00 amSTL - BKK
2 stops28h 15mCathay Pacific
Mon 11/245:40 pmBKK - STL
2 stops41h 54mCathay Pacific
Deal found 11/5$1,069
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/45:30 pmSTL - BKK
2 stops28h 55mUnited Airlines
Thu 12/114:55 pmBKK - STL
3 stops35h 45mUnited Airlines
Deal found 11/4$1,071
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/65:29 pmSTL - BKK
2 stops52h 56mUnited Airlines
Sun 11/234:55 pmBKK - STL
3 stops36h 33mUnited Airlines
Deal found 11/5$1,096
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/111:20 amSTL - BKK
3 stops35h 05mUnited Airlines
Fri 12/194:55 pmBKK - STL
3 stops42h 27mUnited Airlines
Deal found 11/6$1,102

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 November 6, 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 4/1

5:18 pm-4:35 am

2 stops47h 17m

Bangkok Suvarnabhumi

Thu 4/30

3:40 pm-12:20 pm

3 stops32h 40m

$1,004

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 1/7

5:00 pm-11:25 am

2 stops53h 25m

Bangkok Suvarnabhumi

Wed 3/4

4:55 pm-2:31 pm

3 stops34h 36m

$1,015

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 12/1

6:40 am-12:45 am

2 stops29h 05m

Bangkok Suvarnabhumi

Thu 12/18

2:05 am-11:27 pm

2 stops34h 22m

$1,018

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

10:25 am-9:50 am

2 stops34h 25m

Bangkok Suvarnabhumi

Sat 3/7

3:35 am-12:30 am

2 stops33h 55m

$1,036

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 1/7

11:05 am-12:15 pm

2 stops36h 10m

Bangkok Suvarnabhumi

Tue 3/3

3:00 am-6:11 pm

2 stops28h 11m

$1,038

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

9:55 am-5:10 am

2 stops30h 15m

Bangkok Suvarnabhumi

Sun 3/8

4:55 pm-4:52 pm

3 stops35h 57m

$1,039

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 11/29

3:14 pm-12:20 am

2 stops44h 06m

Bangkok Suvarnabhumi

Mon 12/15

4:55 pm-12:39 pm

3 stops32h 44m

$1,047

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 12/8

7:43 pm-9:25 pm

3 stops36h 42m

$429

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/30

7:00 am-6:05 pm

3 stops47h 05m

$557

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 12/15

7:43 pm-12:10 am

3 stops39h 27m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 15 results
1
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Bangkok Suvarnabhumi Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 October 31, 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 78 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, August 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 June is currently the most expensive (average of $1,263). 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 November 6, 2025.

It’s typically best to fly out from St. Louis to Bangkok Suvarnabhumi Airport in the morning. Doing so could potentially save you 23% 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 evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Bangkok Suvarnabhumi Airport?

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 November 6, 2025.
Peruse reviews from past customers who have flown with ANA, Japan Airlines, and Delta from St. Louis to Bangkok Suvarnabhumi Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
ANA
8.4
Very good
1,003 reviews
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Japan Airlines
8.3
Very good
1,604 reviews
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Delta
7.9
Good
8,001 reviews
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Cathay Pacific
7.6
Good
1,055 reviews
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
United Airlines
7.4
Good
9,007 reviews
ANA
8.4
Very good
1,003 reviews

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.6

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me

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 9 different airlines.

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

    United Airlines and Delta can get you from St. Louis to Bangkok Suvarnabhumi Airport in just under 29h 05m. Your travel time can differ by up to 18h 12m. The distance between St. Louis and Bangkok Suvarnabhumi Airport is about 8737 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Qatar Airways, at $897, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include American Airlines and Japan Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 29% 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, August 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 June is currently the most expensive (average of $1,263). 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 Bangkok Suvarnabhumi Airport?

Book flights to Bangkok Suvarnabhumi Airport if you plan to visit one of these locations
Sattahip
Kanchanaburi
Chonburi
Cha-am
Ko Samet
Pak Chong
Ko Lan

Browse thousands of different options on Cheapflights for your next trip

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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 9 airlines flying from St. Louis to Suvarnabhumi

Discover the top 9 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$897Average$1,213FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$979Average$1,278FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$985Average$1,143FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$986Average$1,167FlexibilityNo cancel feeOn-time69%
ANACheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,058Average$1,631FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$1,060Average$1,377FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$1,176Average$1,747FlexibilityNo cancel feeOn-time67%
FinnairCheapest$1,289Average$1,456FlexibilityNo cancel feeOn-time76%

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