HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Suvarnabhumi

$530+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Suvarnabhumi with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 20, 2026.

This Etihad Airways deal was found by Cheapflights users on 7/16. 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.
Sat 10/1711:31 am
STL
-
BKK
2 stops31h 14m
Multiple Airlines
Wed 10/288:50 pm
BKK
-
STL
2 stops35h 08m
Multiple Airlines
Deal found 7/16$1,037
This Air Canada deal was found by Cheapflights users on 7/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:10 pm
STL
-
BKK
2 stops28h 55m
Air Canada
Fri 9/47:45 am
BKK
-
STL
2 stops46h 57m
Air Canada
Deal found 7/19$1,091
This Etihad Airways deal was found by Cheapflights users on 7/16. 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 9/3011:01 am
STL
-
BKK
2 stops31h 44m
Multiple Airlines
Sat 10/318:50 pm
BKK
-
STL
2 stops37h 18m
Multiple Airlines
Deal found 7/16$1,094
This Etihad Airways deal was found by Cheapflights users on 7/16. 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 8/196:00 am
STL
-
BKK
2 stops29h 55m
Multiple Airlines
Wed 8/263:55 pm
BKK
-
STL
2 stops39h 04m
Multiple Airlines
Deal found 7/16$1,097
This Mytrip deal was found by Cheapflights users on 7/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:35 am
STL
-
BKK
2 stops41h 25m
Multiple Airlines
Mon 9/75:50 pm
BKK
-
STL
2 stops60h 48m
Multiple Airlines
Deal found 7/17$1,170
This Etihad Airways deal was found by Cheapflights users on 7/16. 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 11/251:06 pm
STL
-
BKK
2 stops28h 29m
Multiple Airlines
Sat 12/122:40 pm
BKK
-
STL
2 stops40h 23m
Multiple Airlines
Deal found 7/16$1,177
This Alaska Airlines deal was found by Cheapflights users on 7/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 am
STL
-
BKK
2 stops28h 25m
Multiple Airlines
Tue 9/87:55 am
BKK
-
STL
2 stops42h 26m
Multiple Airlines
Deal found 7/18$1,201
This oojo deal was found by Cheapflights users on 7/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:34 am
STL
-
BKK
2 stops27h 21m
Etihad Airways
Tue 8/253:55 pm
BKK
-
STL
2 stops36h 30m
Etihad Airways
Deal found 7/16$1,215
This oojo deal was found by Cheapflights users on 7/18. 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 11/251:06 pm
STL
-
BKK
2 stops28h 34m
Qatar Airways
Fri 12/112:00 am
BKK
-
STL
2 stops34h 59m
Qatar Airways
Deal found 7/18$1,228
This Ovago deal was found by Cheapflights users on 7/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 am
STL
-
BKK
2 stops28h 25m
Multiple Airlines
Sun 9/67:55 am
BKK
-
STL
2 stops28h 04m
Multiple Airlines
Deal found 7/18$1,235
This oojo deal was found by Cheapflights users on 7/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:31 am
STL
-
BKK
2 stops30h 49m
Qatar Airways
Mon 11/93:00 am
BKK
-
STL
2 stops48h 15m
Qatar Airways
Deal found 7/16$1,236
This Etihad Airways deal was found by Cheapflights users on 7/19. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:31 am
STL
-
BKK
2 stops31h 04m
Multiple Airlines
Fri 11/278:50 pm
BKK
-
STL
2 stops35h 48m
Multiple Airlines
Deal found 7/19$1,271

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 July 20, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,037
(Etihad Airways)

One-way from

$530
(Orbitz)

Popular in

December

Cheapest in

August

Average price

$1,391
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. 6% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 10/28

11:31 am-6:35 am

2 stops31h 04m

Bangkok Suvarnabhumi

Wed 11/11

8:50 pm-9:08 pm

2 stops37h 18m

$1,037

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/10

5:21 pm-6:45 am

2 stops25h 24m

Bangkok Suvarnabhumi

Tue 11/10

8:50 pm-7:22 pm

2 stops35h 32m

$1,037

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/17

11:31 am-6:45 am

2 stops31h 14m

Bangkok Suvarnabhumi

Wed 10/28

8:50 pm-7:58 pm

2 stops35h 08m

$1,037

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 9/30

11:01 am-6:45 am

2 stops31h 44m

Bangkok Suvarnabhumi

Sat 10/31

8:50 pm-10:08 pm

2 stops37h 18m

$1,094

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 11/25

7:29 am-6:35 am

2 stops34h 06m

Bangkok Suvarnabhumi

Sun 11/29

2:40 pm-9:08 pm

2 stops43h 28m

$1,177

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 9/10

1:49 pm-7:35 am

2 stops29h 46m

Bangkok Suvarnabhumi

Sun 9/13

2:30 am-12:27 am

2 stops33h 57m

$1,289

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

6:25 am-9:45 am

3 stops39h 20m

Bangkok Suvarnabhumi

Tue 11/17

2:35 am-10:00 pm

2 stops32h 25m

$1,309

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 8/21

8:45 pm-9:45 am

2 stops25h 00m

Bangkok Suvarnabhumi

Thu 8/27

10:50 am-1:35 pm

2 stops38h 45m

$1,318
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

5:00 pm-9:45 am

2 stops28h 45m

Bangkok Suvarnabhumi

Fri 8/21

10:50 am-11:50 pm

2 stops25h 00m

$1,331

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

8:48 am-11:35 pm

2 stops26h 47m

Bangkok Suvarnabhumi

Thu 8/20

2:35 am-12:41 am

2 stops34h 06m

$1,356

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/18

Showing 1-10 of 17 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 July.
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, August is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $979). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,733). 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 July 20, 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
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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
1,878 reviews
Japan Airlines
8.3
Very good
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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
8,478 reviews
Japan Airlines
8.3
Very good
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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
1,417 reviews
Japan Airlines
8.3
Very good
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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
10,016 reviews
Japan Airlines
8.3
Very good
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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
3,747 reviews
Japan Airlines
8.3
Very good
1,878 reviews

Comfort

8.2

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

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.

  • 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 Qatar Airways. 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 $608 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, August is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $979). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,733). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 July 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$881Average$1,259FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$929Average$1,106FlexibilityNo cancel feeOn-time79%
Qatar AirwaysCheapest$946Average$1,204FlexibilityNo cancel feeOn-time68%
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$1,391FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,048Average$1,456FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.