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Suvarnabhumi

$550+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jun 22 — Jun 291
Mon 6/22
Mon 6/29
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 May 23, 2026.

This oojo deal was found by Cheapflights users on 5/22. 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 8/205:23 am
STL
-
BKK
2 stops30h 27m
Etihad Airways
Wed 11/188:50 pm
BKK
-
STL
2 stops29h 27m
Etihad Airways
Deal found 5/22$1,031
This oojo deal was found by Cheapflights users on 5/21. 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 10/257:38 am
STL
-
BKK
2 stops34h 57m
Etihad Airways
Fri 10/308:50 pm
BKK
-
STL
2 stops34h 12m
Etihad Airways
Deal found 5/21$1,036
This oojo deal was found by Cheapflights users on 5/18. 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 10/16:06 am
STL
-
BKK
2 stops36h 39m
Etihad Airways
Mon 11/168:30 am
BKK
-
STL
2 stops46h 24m
Etihad Airways
Deal found 5/18$1,037
This Etihad Airways deal was found by Cheapflights users on 5/20. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:22 am
STL
-
BKK
2 stops25h 28m
Multiple Airlines
Fri 9/183:15 am
BKK
-
STL
2 stops32h 05m
Multiple Airlines
Deal found 5/20$1,038
This Etihad Airways deal was found by Cheapflights users on 5/19. 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.
Thu 8/209:21 am
STL
-
BKK
2 stops26h 29m
Multiple Airlines
Tue 11/172:55 am
BKK
-
STL
2 stops34h 01m
Multiple Airlines
Deal found 5/19$1,039
This Etihad Airways deal was found by Cheapflights users on 5/21. 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.
Thu 10/17:44 am
STL
-
BKK
2 stops35h 01m
Multiple Airlines
Mon 11/168:50 pm
BKK
-
STL
2 stops35h 39m
Multiple Airlines
Deal found 5/21$1,044
This oojo deal was found by Cheapflights users on 5/22. 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 10/96:02 am
STL
-
BKK
2 stops29h 48m
Etihad Airways
Wed 10/213:15 am
BKK
-
STL
2 stops48h 15m
Etihad Airways
Deal found 5/22$1,092
This oojo deal was found by Cheapflights users on 5/20. 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.
Sun 10/116:02 am
STL
-
BKK
2 stops36h 43m
Etihad Airways
Sat 10/243:05 pm
BKK
-
STL
2 stops36h 25m
Etihad Airways
Deal found 5/20$1,098
This Etihad Airways deal was found by Cheapflights users on 5/18. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:19 pm
STL
-
BKK
2 stops30h 31m
Multiple Airlines
Sun 7/199:00 pm
BKK
-
STL
2 stops34h 21m
Multiple Airlines
Deal found 5/18$1,099
This oojo deal was found by Cheapflights users on 5/22. 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.
Tue 8/118:34 am
STL
-
BKK
2 stops27h 16m
Etihad Airways
Sun 8/233:15 am
BKK
-
STL
2 stops51h 44m
Etihad Airways
Deal found 5/22$1,103
This Etihad Airways deal was found by Cheapflights users on 5/22. 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.
Thu 10/229:35 am
STL
-
BKK
2 stops26h 15m
Multiple Airlines
Fri 11/68:50 pm
BKK
-
STL
2 stops35h 37m
Multiple Airlines
Deal found 5/22$1,158
This oojo deal was found by Cheapflights users on 5/23. 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 7/166:12 pm
STL
-
BKK
2 stops41h 38m
Etihad Airways
Wed 7/229:15 am
BKK
-
STL
2 stops44h 07m
Etihad Airways
Deal found 5/23$1,160

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 May 23, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,031
(oojo)

One-way from

$550
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,438
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 ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 23, 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

7:34 am-11:50 pm

2 stops28h 16m

Bangkok Suvarnabhumi

Wed 11/18

8:50 pm-7:27 pm

2 stops35h 37m

$1,039

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

8:45 pm-12:10 pm

2 stops27h 25m

Bangkok Suvarnabhumi

Thu 8/20

2:40 am-11:50 pm

2 stops33h 10m

$1,333
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

1:36 pm-9:35 am

3 stops31h 59m

Bangkok Suvarnabhumi

Wed 11/18

9:10 am-6:09 pm

2 stops21h 59m

$1,643

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/13

6:25 am-9:45 am

3 stops39h 20m

Bangkok Suvarnabhumi

Sat 8/22

1:20 pm-12:20 pm

2 stops35h 00m

$1,648

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/21

4:40 pm-9:35 am

3 stops28h 55m

Bangkok Suvarnabhumi

Fri 9/25

9:35 am-12:13 pm

2 stops38h 38m

$1,678

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/14

4:40 pm-9:35 am

3 stops28h 55m

Bangkok Suvarnabhumi

Sat 10/10

7:00 am-11:45 pm

2 stops28h 45m

$1,681

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 11/13

8:00 am-11:25 am

3 stops38h 25m

Bangkok Suvarnabhumi

Mon 12/14

9:10 am-12:34 am

2 stops28h 24m

$1,683

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/10

4:40 pm-9:35 am

3 stops28h 55m

Bangkok Suvarnabhumi

Tue 11/10

9:10 am-11:25 pm

2 stops27h 15m

$1,683
Cheapest one-way

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 9/11

6:00 am-11:35 pm

2 stops29h 35m

$565

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

1:25 pm-7:15 am

2 stops29h 50m

$624

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 16 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 May.
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 $1,017). 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 May 23, 2026.
Peruse reviews from past customers who have flown with Japan Airlines,ANA, andDelta 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
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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
1,826 reviews
Japan Airlines
8.3
Very good
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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.
ANA
8.3
Very good
1,212 reviews
Japan Airlines
8.3
Very good
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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
7.9
Good
8,444 reviews
Japan Airlines
8.3
Very good
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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
1,342 reviews
Japan Airlines
8.3
Very good
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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
9,751 reviews
Japan Airlines
8.3
Very good
1,826 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Crew

8.7

Food

7.7

Comfort

8.2

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?

    United Airlines can get you from St. Louis to Bangkok Suvarnabhumi Airport in just under 31h 59m. 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 Japan Airlines, which is currently one of the cheapest options available, starting at $468. United Airlines flights start at $494 while deals on Delta start at $540 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 $1,017). 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
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

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 May 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$881Average$1,248FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$929Average$1,106FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$954Average$1,278FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$974Average$1,299FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$983Average$1,245FlexibilityNo cancel feeOn-time69%
ANACheapest$1,007Average$1,260FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,048Average$1,456FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,094Average$1,226FlexibilityNo cancel feeOn-time68%

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