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Suvarnabhumi

$622+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jul 21 — Jul 281
Tue 7/21
Tue 7/28
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 June 21, 2026.

This oojo deal was found by Cheapflights users on 6/20. 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.
Thu 8/209:44 am
STL
-
BKK
2 stops26h 06m
Etihad Airways
Wed 11/188:50 pm
BKK
-
STL
2 stops29h 27m
Etihad Airways
Deal found 6/20$1,026
This oojo deal was found by Cheapflights users on 6/18. 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.
Wed 8/1910:22 am
STL
-
BKK
2 stops32h 23m
Etihad Airways
Fri 9/43:55 pm
BKK
-
STL
2 stops39h 47m
Etihad Airways
Deal found 6/18$1,030
This Etihad Airways deal was found by Cheapflights users on 6/16. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:32 am
STL
-
BKK
2 stops26h 18m
Multiple Airlines
Sat 9/199:00 pm
BKK
-
STL
2 stops35h 44m
Multiple Airlines
Deal found 6/16$1,038
This BusinessClass deal was found by Cheapflights users on 6/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:22 am
STL
-
BKK
2 stops25h 28m
Etihad Airways
Tue 9/83:15 am
BKK
-
STL
2 stops29h 29m
Etihad Airways
Deal found 6/19$1,041
This oojo deal was found by Cheapflights users on 6/19. 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.
Wed 12/27:36 pm
STL
-
BKK
2 stops45h 59m
Etihad Airways
Wed 2/38:30 am
BKK
-
STL
2 stops43h 34m
Etihad Airways
Deal found 6/19$1,058
This oojo deal was found by Cheapflights users on 6/17. 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.
Wed 11/42:50 pm
STL
-
BKK
2 stops43h 30m
Etihad Airways
Fri 11/277:55 pm
BKK
-
STL
2 stops36h 32m
Etihad Airways
Deal found 6/17$1,062
This oojo deal was found by Cheapflights users on 6/20. 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.
Thu 11/58:40 am
STL
-
BKK
2 stops32h 55m
Etihad Airways
Wed 11/182:40 pm
BKK
-
STL
2 stops35h 37m
Etihad Airways
Deal found 6/20$1,089
This oojo deal was found by Cheapflights users on 6/18. 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.
Wed 7/89:08 am
STL
-
BKK
2 stops39h 02m
Etihad Airways
Wed 8/123:55 pm
BKK
-
STL
2 stops32h 59m
Etihad Airways
Deal found 6/18$1,092
This oojo deal was found by Cheapflights users on 6/19. 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.
Sat 8/81:54 pm
STL
-
BKK
2 stops52h 51m
Etihad Airways
Wed 8/193:55 pm
BKK
-
STL
2 stops32h 59m
Etihad Airways
Deal found 6/19$1,096
This Etihad Airways deal was found by Cheapflights users on 6/16. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:38 am
STL
-
BKK
2 stops28h 12m
Multiple Airlines
Thu 10/229:00 pm
BKK
-
STL
2 stops34h 02m
Multiple Airlines
Deal found 6/16$1,098

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 June 21, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,026
(oojo)

One-way from

$622
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,390
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. 4% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 21, 2026.
Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

10:22 am-12:10 pm

2 stops37h 48m

Bangkok Suvarnabhumi

Wed 11/18

2:40 pm-1:17 pm

2 stops35h 37m

$1,038
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 8/8

10:22 am-11:50 pm

2 stops25h 28m

Bangkok Suvarnabhumi

Wed 8/19

3:55 pm-12:54 pm

2 stops32h 59m

$1,158

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 9/12

11:01 am-1:25 pm

2 stops38h 24m

Bangkok Suvarnabhumi

Tue 9/15

2:30 am-8:44 pm

2 stops30h 14m

$1,331

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 8/4

11:13 am-1:35 pm

2 stops38h 22m

Bangkok Suvarnabhumi

Tue 8/11

9:40 pm-12:41 am

2 stops39h 01m

$1,356

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

6:30 am-1:05 am

2 stops30h 35m

Bangkok Suvarnabhumi

Fri 8/21

11:30 pm-9:00 pm

2 stops33h 30m

$1,356

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 7/9

9:06 am-9:35 am

3 stops36h 29m

Bangkok Suvarnabhumi

Thu 7/16

9:35 am-9:26 pm

2 stops47h 51m

$1,367

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/8

9:06 am-9:35 am

3 stops36h 29m

Bangkok Suvarnabhumi

Mon 7/20

9:35 am-11:36 pm

2 stops50h 01m

$1,506
Cheapest one-way

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/22

6:55 am-7:15 am

2 stops36h 20m

$631
Quickest one-way

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

7:56 pm-12:00 pm

2 stops28h 04m

$634

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/22

1:13 pm-9:35 am

3 stops32h 22m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on St. Louis-Bangkok Suvarnabhumi Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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?

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 9 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, February is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $1,024). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,684). 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.

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 June 21, 2026.
Peruse reviews from past customers who have flown with Japan Airlines,Delta, andCathay Pacific 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.
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.
Japan Airlines
8.3
Very good
1,841 reviews
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.
Delta
7.8
Good
8,424 reviews
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.
Cathay Pacific
7.6
Good
1,388 reviews
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.
United Airlines
7.4
Good
9,868 reviews
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.
Qatar Airways
7.3
Good
3,727 reviews
Japan Airlines
8.3
Very good
1,841 reviews

Food

7.7

Overall

8.3

Crew

8.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Nymo,Nov 2025

NRT - BKK

It’s great experience overall. Stewards are superb. Every crew member is so pleasant. I’ll fly JAL again.

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 8 different airlines.

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

    Qatar Airways can get you from St. Louis to Bangkok Suvarnabhumi Airport in just under 38h 24m. Your travel time can differ by up to . The distance between St. Louis and Bangkok Suvarnabhumi Airport is about 8737 mi.

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

    Delta, at $881, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Japan Airlines and American Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 31% 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 $574 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, February is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $1,024). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,684). 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
Ko Samet
Chonburi
Cha-am
Sattahip
Pak Chong

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

Top 8 airlines flying from St. Louis to Suvarnabhumi

Discover the top 8 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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$881Average$1,180FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$929Average$1,106FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$954Average$1,274FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$974Average$1,299FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$982Average$1,233FlexibilityNo cancel feeOn-time69%
ANACheapest$1,007Average$1,271FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,048Average$1,456FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,094Average$1,255FlexibilityNo cancel feeOn-time68%

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