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Suvarnabhumi

$528+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Bangkok Suvarnabhumi are usually found in October or January, booked 76 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 July 3, 2025.

Round-trip from

$974
(Ovago)

One-way from

$528
(KAYAK)

Popular in

December

Cheapest in

October

Average price

$1,611
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. 1% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Ovago deal was found by Cheapflights users on 7/2. 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 8/286:15 amSTL - BKK
2 stops29h 40mANA
Wed 9/39:35 amBKK - STL
2 stops40h 44mANA
Deal found 7/2$974
This Delta deal was found by Cheapflights users on 7/1. 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 9/18:46 amSTL - BKK
2 stops28h 19mDelta
Sun 9/149:40 pmBKK - STL
2 stops38h 58mDelta
Deal found 7/1$978
This United Airlines deal was found by Cheapflights users on 7/3. 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 10/65:47 pmSTL - BKK
2 stops46h 48mUnited Airlines
Tue 11/49:25 amBKK - STL
2 stops44h 38mUnited Airlines
Deal found 7/3$984
This oojo deal was found by Cheapflights users on 7/1. 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 9/16:30 pmSTL - BKK
2 stops29h 40mChina Airlines
Mon 9/292:40 amBKK - STL
2 stops50h 54mChina Airlines
Deal found 7/1$1,001

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 3, 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

Thu 8/28

6:15 am-11:55 pm

2 stops29h 40m

Bangkok Suvarnabhumi

Wed 9/3

9:35 am-2:19 pm

2 stops40h 44m

$974

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/1

8:46 am-1:05 am

2 stops28h 19m

Bangkok Suvarnabhumi

Sun 9/14

9:40 pm-12:38 am

2 stops38h 58m

$978

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 7/8

6:00 am-4:35 am

2 stops34h 35m

Bangkok Suvarnabhumi

Mon 7/21

7:00 am-4:54 am

2 stops33h 54m

$987

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/1

6:30 pm-12:10 pm

2 stops29h 40m

Bangkok Suvarnabhumi

Mon 9/29

2:40 am-5:34 pm

2 stops50h 54m

$1,001

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/21

6:00 am-11:10 pm

2 stops29h 10m

Bangkok Suvarnabhumi

Fri 8/22

1:20 am-5:34 pm

2 stops52h 14m

$1,195

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 7/28

6:14 am-4:40 am

2 stops34h 26m

$528

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 7/10

5:30 am-11:00 pm

2 stops29h 30m

$546

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/9

6:30 am-11:55 pm

2 stops29h 25m

$607

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 7/18

1:00 pm-11:50 pm

3 stops46h 50m

$627

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 7/28

7:38 pm-4:20 pm

3 stops32h 42m

$4,213

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 June 27, 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 76 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, March is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $952). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,573). 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 July 3, 2025.

It’s typically best to fly out from St. Louis to Bangkok Suvarnabhumi Airport in the morning. Doing so could potentially save you 24% 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 at noon 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 July 3, 2025.
Peruse reviews from past customers who have flown with ANA, Japan Airlines, and China Airlines 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
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very good
893 reviews
ANA
8.4
Very good
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Japan Airlines
8.3
Very good
1,505 reviews
ANA
8.4
Very good
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
China Airlines
8.3
Very good
744 reviews
ANA
8.4
Very good
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very good
7,982 reviews
ANA
8.4
Very good
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Cathay Pacific
7.6
Good
921 reviews
ANA
8.4
Very good
893 reviews

Overall

8.4

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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 10 different airlines.

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

    ANA, at $974, was found to be the cheapest airline from St. Louis to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Delta and United Airlines. You may be able to fly from St. Louis to Bangkok Suvarnabhumi Airport for 27% 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 $528. American Airlines flights start at $546 while deals on United Airlines start at $607 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, March is the cheapest month in which you can book a flight from St. Louis to Bangkok Suvarnabhumi Airport (average of $952). Flying from St. Louis to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,573). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Sattahip
Chonburi
Kanchanaburi
Cha-am
Ko Samet
Phetchaburi
Pak Chong
Ko Lan

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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 10 airlines flying from St. Louis to Suvarnabhumi

Discover the top 10 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$897Average$1,365FlexibilityNo cancel feeOn-time68%
ANACheapest$1,053Average$1,168FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,077Average$1,158FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,080Average$1,147FlexibilityNo cancel feeOn-time79%
DeltaCheapest$1,103Average$1,669FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,114Average$1,197FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$1,116Average$1,301FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$1,176Average$1,786FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,228Average$1,397FlexibilityNo cancel feeOn-time72%
FinnairCheapest$1,289Average$1,456FlexibilityNo cancel feeOn-time76%

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