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Suvarnabhumi

$406+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap 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 January 20, 2026.

This oojo deal was found by Cheapflights users on 1/18. 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 4/234:46 pm
STL
-
BKK
2 stops31h 14m
Multiple Airlines
Sat 5/25:50 pm
BKK
-
STL
2 stops58h 00m
Multiple Airlines
Deal found 1/18$873
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:35 am
STL
-
BKK
2 stops29h 20m
Delta
Mon 3/169:30 pm
BKK
-
STL
2 stops38h 28m
Delta
Deal found 1/20$882
This oojo deal was found by Cheapflights users on 1/19. 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 9/137:32 pm
STL
-
BKK
2 stops33h 08m
Multiple Airlines
Sat 9/195:50 pm
BKK
-
STL
2 stops56h 36m
Multiple Airlines
Deal found 1/19$897
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:55 am
STL
-
BKK
3 stops36h 30m
United Airlines
Mon 3/164:55 pm
BKK
-
STL
3 stops39h 46m
United Airlines
Deal found 1/20$902
This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:00 am
STL
-
BKK
2 stops40h 35m
Multiple Airlines
Fri 3/131:45 pm
BKK
-
STL
2 stops22h 14m
Multiple Airlines
Deal found 1/20$912
This oojo deal was found by Cheapflights users on 1/18. 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.
Fri 5/14:46 pm
STL
-
BKK
2 stops31h 14m
Multiple Airlines
Mon 8/311:10 pm
BKK
-
STL
2 stops37h 16m
Multiple Airlines
Deal found 1/18$916
This oojo deal was found by Cheapflights users on 1/17. 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 3/22:47 pm
STL
-
BKK
2 stops36h 43m
Multiple Airlines
Mon 3/161:45 pm
BKK
-
STL
2 stops22h 14m
Multiple Airlines
Deal found 1/17$922
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:10 am
STL
-
BKK
2 stops26h 20m
Delta
Mon 2/2311:15 pm
BKK
-
STL
2 stops38h 10m
Delta
Deal found 1/20$931
This SmartFares deal was found by Cheapflights users on 1/19. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
STL
-
BKK
2 stops40h 35m
Multiple Airlines
Thu 3/121:45 pm
BKK
-
STL
2 stops22h 14m
Multiple Airlines
Deal found 1/19$932
This United Airlines deal was found by Cheapflights users on 1/19. 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 2/1711:25 am
STL
-
BKK
3 stops35h 00m
United Airlines
Fri 3/64:55 pm
BKK
-
STL
3 stops30h 41m
United Airlines
Deal found 1/19$936
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:25 am
STL
-
BKK
2 stops28h 55m
United Airlines
Sun 3/84:55 pm
BKK
-
STL
3 stops39h 46m
United Airlines
Deal found 1/20$940
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Mon 1/266:00 am
STL
-
BKK
3 stops40h 25m
United Airlines
Thu 1/294:55 pm
BKK
-
STL
3 stops34h 35m
United Airlines
Deal found 1/19$945

Find 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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$873
(oojo)

One-way from

$406
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,067
Provider with most accurate pricing for Lambert-St Louis-Bangkok Suvarnabhumi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Bangkok Suvarnabhumi flights.
Search Deals
From Lambert-St Louis to Bangkok Suvarnabhumi
Search Deals
One-way flight from Lambert-St Louis to Bangkok Suvarnabhumi
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 20, 2026.
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 2/4

6:35 am-12:45 am

2 stops29h 10m

Bangkok Suvarnabhumi

Wed 3/4

9:30 pm-11:36 pm

2 stops39h 06m

$882

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 4/13

7:00 am-4:40 pm

2 stops45h 40m

Bangkok Suvarnabhumi

Sun 4/26

1:10 pm-3:50 pm

2 stops38h 40m

$882

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

6:35 am-12:55 am

2 stops29h 20m

Bangkok Suvarnabhumi

Mon 3/16

9:30 pm-11:58 pm

2 stops38h 28m

$882

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 3/4

6:35 am-12:45 am

2 stops29h 10m

Bangkok Suvarnabhumi

Tue 3/10

2:05 am-9:06 pm

2 stops31h 01m

$882

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

9:55 am-11:25 am

3 stops36h 30m

Bangkok Suvarnabhumi

Mon 3/16

4:55 pm-8:41 pm

3 stops39h 46m

$902

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

6:35 am-12:45 am

2 stops29h 10m

Bangkok Suvarnabhumi

Sun 3/8

9:30 pm-11:25 pm

2 stops37h 55m

$931

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 2/16

6:10 am-9:30 pm

2 stops26h 20m

Bangkok Suvarnabhumi

Mon 2/23

11:15 pm-12:25 am

2 stops38h 10m

$931

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 3/5

7:00 am-12:35 pm

2 stops40h 35m

Bangkok Suvarnabhumi

Thu 3/12

1:45 pm-11:59 pm

2 stops22h 14m

$932

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 2/17

11:25 am-11:25 am

3 stops35h 00m

Bangkok Suvarnabhumi

Fri 3/6

4:55 pm-10:36 am

3 stops30h 41m

$936

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

6:25 am-12:20 am

2 stops28h 55m

Bangkok Suvarnabhumi

Sun 3/8

4:55 pm-8:41 pm

3 stops39h 46m

$940

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 21 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust 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 Expedia the most. Expedia 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 January 16, 2026.

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 53 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, January is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $947). Flying from St. Louis to Bangkok Suvarnabhumi Airport in June is currently the most expensive (average of $1,273). 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.

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 January 20, 2026.
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
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
ANA
8.4
Very good
1,077 reviews
ANA
8.4
Very good
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Japan Airlines
8.3
Very good
1,687 reviews
ANA
8.4
Very good
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Delta
7.9
Good
8,080 reviews
ANA
8.4
Very good
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Cathay Pacific
7.6
Good
1,140 reviews
ANA
8.4
Very good
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
United Airlines
7.4
Good
9,186 reviews
ANA
8.4
Very good
1,077 reviews

Overall

8.4

Crew

8.7

Food

7.7

Entertainment

7.9

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!

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?

    Delta and United Airlines can get you from St. Louis to Bangkok Suvarnabhumi Airport in just under 29h 10m. Your travel time can differ by up to 7h 20m. 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?

    Japan Airlines, at $966, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Cathay Pacific and American Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 25% 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 United Airlines, which is currently one of the cheapest options available, starting at $494. Delta flights start at $531 while deals on ANA start at $605 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, January is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $947). Flying from St. Louis to Bangkok Suvarnabhumi Airport in June is currently the most expensive (average of $1,273). 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
Chonburi
Kanchanaburi
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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$966Average$1,111FlexibilityNo cancel feeOn-time79%
Cathay PacificCheapest$979Average$1,378FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$979Average$1,279FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$984Average$1,204FlexibilityNo cancel feeOn-time69%
ANACheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,040Average$1,529FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,094Average$1,188FlexibilityNo cancel feeOn-time68%
Air CanadaCheapest$1,280Average$1,786FlexibilityNo cancel feeOn-time67%
FinnairCheapest$1,356Average$1,458FlexibilityNo cancel feeOn-time76%

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