HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Thailand

$497+ Cheap flights from St. Louis (STL) to Thailand

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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
févr. 9 — févr. 161
dim. 2/9
dim. 2/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Thailand 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 Thailand

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Thailand (TH0). 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 février 4, 2025.

Round-trip from

$1,112
(Orbitz)

One-way from

$497
(oojo)

Popular in

December

Cheapest in

January

Average price

$1,302
From Lambert-St Louis to Thailand
Search Deals
One-way flight from Lambert-St Louis to Thailand
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from St. Louis to Thailand

Cheapest flights from St. Louis to Thailand
Explore the most affordable flight options available from St. Louis to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on février 4, 2025.

This Gurufare deal was found by Cheapflights users on 2/4. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/281:27 pmSTL - BKK
2 stops27h 08mANA
mer. 9/39:35 pmBKK - STL
2 stops31h 00mANA
Deal found 2/4$1,090
This Gurufare deal was found by Cheapflights users on 2/4. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/77:00 amSTL - BKK
2 stops33h 40mJapan Airlines
mar. 10/1412:25 amBKK - STL
2 stops34h 28mJapan Airlines
Deal found 2/4$1,093
This United deal was found by Cheapflights users on 2/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/281:27 pmSTL - BKK
2 stops27h 08mUnited Airlines
mar. 9/27:00 amBKK - STL
2 stops21h 26mUnited Airlines
Deal found 2/4$1,112
This Fareboom deal was found by Cheapflights users on 2/3. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/246:10 amSTL - BKK
2 stops27h 25mCathay Pacific
lun. 3/36:40 amBKK - STL
2 stops24h 25mCathay Pacific
Deal found 2/3$1,113
This Fareboom deal was found by Cheapflights users on 2/4. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/227:04 amSTL - BKK
2 stops33h 51mQatar Airways
dim. 3/23:00 amBKK - STL
2 stops28h 05mQatar Airways
Deal found 2/4$1,153
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/37:00 amSTL - HKT
2 stops34h 50mMultiple Airlines
lun. 3/1011:20 pmHKT - STL
2 stops35h 43mMultiple Airlines
Deal found 2/3$1,187
This EVA Air deal was found by Cheapflights users on 2/4. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 2/233:21 pmSTL - BKK
2 stops30h 24mMultiple Airlines
dim. 3/22:15 amBKK - STL
2 stops29h 41mMultiple Airlines
Deal found 2/4$1,280
This Delta deal was found by Cheapflights users on 2/4. 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.
sam. 3/16:00 amSTL - HKT
2 stops26h 40mDelta
sam. 3/1511:20 pmHKT - STL
2 stops35h 43mDelta
Deal found 2/4$1,284
This Korean Air deal was found by Cheapflights users on 2/4. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 4/1811:23 amSTL - BKK
2 stops24h 17mKorean Air
ven. 5/211:30 pmBKK - STL
2 stops34h 18mKorean Air
Deal found 2/4$1,340
This LionTravel deal was found by Cheapflights users on 2/2. 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 LionTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 3/203:11 pmSTL - CNX
2 stops31h 24mMultiple Airlines
jeu. 3/2711:50 amCNX - STL
2 stops38h 25mMultiple Airlines
Deal found 2/2$1,395
This Delta deal was found by Cheapflights users on 2/4. 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.
mar. 3/256:00 amSTL - BKK
2 stops30h 45mDelta
jeu. 3/271:00 amBKK - STL
2 stops27h 48mDelta
Deal found 2/4$1,419
This oojo deal was found by Cheapflights users on 2/4. 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.
mar. 2/46:03 amSTL - HKT
2 stops40h 17mCathay Pacific
lun. 2/1012:20 pmHKT - STL
2 stops46h 49mCathay Pacific
Deal found 2/4$1,424

Find flights from St. Louis to Thailand within your budget

Customize your flight search to find flights from St. Louis to Thailand 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 février 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

dim. 5/4

6:30 am-7:35 am

2 stops37h 05m

Phuket City

dim. 5/11

8:30 pm-11:59 pm

2 stops39h 29m

$1,112

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

lun. 2/24

6:10 am-10:35 pm

2 stops27h 25m

Bangkok Suvarnabhumi

lun. 3/3

6:40 am-6:05 pm

2 stops24h 25m

$1,113

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

sam. 2/22

7:04 am-5:05 am

2 stops33h 01m

Bangkok Suvarnabhumi

lun. 3/3

8:05 am-11:08 pm

2 stops28h 03m

$1,152

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

sam. 2/22

7:00 am-12:05 am

2 stops28h 05m

Bangkok Suvarnabhumi

lun. 3/3

7:10 am-6:56 pm

2 stops24h 46m

$1,155

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

lun. 2/24

12:52 pm-9:40 pm

2 stops43h 48m

Phuket City

dim. 3/9

11:20 pm-1:08 pm

2 stops25h 48m

$1,204

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

dim. 2/23

3:21 pm-10:45 am

2 stops30h 24m

Bangkok Suvarnabhumi

dim. 3/2

2:15 am-6:56 pm

2 stops29h 41m

$1,280

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

lun. 4/7

6:44 am-6:15 am

2 stops35h 31m

Bangkok Suvarnabhumi

lun. 4/28

9:05 am-5:37 pm

2 stops44h 32m

$1,282

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

ven. 2/28

6:00 am-9:30 pm

2 stops26h 30m

Bangkok Suvarnabhumi

ven. 3/7

9:30 pm-10:17 pm

2 stops37h 47m

$1,340

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

jeu. 3/20

3:11 pm-10:35 am

2 stops31h 24m

Chiang Mai

jeu. 3/27

11:50 am-2:15 pm

2 stops38h 25m

$1,395

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

mar. 3/25

6:00 am-12:45 am

2 stops30h 45m

Bangkok Suvarnabhumi

jeu. 3/27

1:00 am-4:48 pm

2 stops27h 48m

$1,419

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 19 results
1
2

Best time to book a flight from St. Louis to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand 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.

Travel insights for flights from St. Louis to Thailand

Get recent, data-driven insights about flights from St. Louis to Thailand including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Thailand?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Thailand (average of $996). Flying from St. Louis to Thailand in June is currently the most expensive (average of $1,585). 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 TH?

Find hourly flight availability from St. Louis to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated février 4, 2025.

When flying from St. Louis to Thailand, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated février 4, 2025.
Get a feel of what it's like to fly with Korean Air, ANA and Japan Airlines from St. Louis to Thailand by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.4
Very good
1,040 reviews
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

ANA
8.4
Very good
836 reviews
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Alaska Airlines
8.0
Very good
9,678 reviews
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,408 reviews
Korean Air
8.4
Very good
1,040 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Thailand. 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 Thailand?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Thailand. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the most popular routes from St. Louis to Thailand?

    The most popular flight routes from St. Louis to Thailand are Lambert-St Louis - Bangkok Suvarnabhumi, Lambert-St Louis - Phuket City and Lambert-St Louis - Chiang Mai.

  • Can I find deals for flights from St. Louis to Thailand that include hotel bookings?

    Yes. In addition to deals on St. Louis to Thailand flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Thailand?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Thailand.

  • Can I find deals for business class flights from St. Louis to Thailand?

    Yes. Cheapflights offers flight deals from St. Louis to Thailand 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 Thailand?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Thailand (average of $996). Flying from St. Louis to Thailand in June is currently the most expensive (average of $1,585). 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

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 Thailand

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Narita flights
Kansas City to Narita flights
St. Louis to Haneda flights
Kansas City to Haneda flights
St. Louis to Hyderabad flights
St. Louis to Incheon Intl flights
Kansas City to Suvarnabhumi flights
St. Louis to New Delhi flights
St. Louis to Suvarnabhumi flights
Kansas City to Incheon Intl flights
St. Louis to Manila flights
Kansas City to Manila flights
Springfield to Suvarnabhumi flights
Kansas City to Ho Chi Minh City flights
Kansas City to Hyderabad flights
Kansas City to Kansai Intl flights
St. Louis to Gimpo Intl flights
Kansas City to Mumbai flights
St. Louis to Ho Chi Minh City flights
St. Louis to Cebu City flights
St. Louis to Chennai flights
St. Louis to Taiwan Taoyuan Intl flights
Kansas City to Taiwan Taoyuan Intl flights
Kansas City to Fukuoka flights
St. Louis to Hong Kong flights
St. Louis to Okinawa flights
Kansas City to Itami flights
St. Louis to Hongqiao Intl flights
Kansas City to Denpasar flights
St. Louis to Kathmandu flights
Kansas City to New Delhi flights
Springfield to Haneda flights
Springfield to Narita flights
St. Louis to Denpasar flights
St. Louis to Sung Shan flights
Kansas City to Cebu City flights
Kansas City to Malé flights
St. Louis to Kuala Lumpur Intl flights
Kansas City to Kathmandu flights
Kansas City to Capital flights
Kansas City to Pu Dong flights
Kansas City to Hongqiao Intl flights
St. Louis to Kansai Intl flights
St. Louis to Pu Dong flights
Columbia to Haneda flights
Kansas City to Pune flights
Columbia to Narita flights

Top 10 airlines flying from St. Louis to Thailand

Discover the top 10 airlines that operate flights from St. Louis to Thailand. 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 février 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$244Average$1,197FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$1,080Average$1,196FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,113Average$1,172FlexibilityNo cancel feeOn-time69%
ANACheapest$1,125Average$1,380FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,149Average$1,663FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$1,158Average$1,368FlexibilityNo cancel feeOn-time77%
FinnairCheapest$1,249Average$1,674FlexibilityNo cancel feeOn-time76%
Cathay PacificCheapest$1,265Average$1,472FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,311Average$1,589FlexibilityNo cancel feeOn-time68%
KLMCheapest$1,783Average$1,855FlexibilityNo cancel feeOn-time75%
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.