St. Louis

$607+ Cheap flights from Thailand to St. Louis (STL)

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — STL
Apr 16 — Apr 231
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Cheap flight deals from Thailand to St. Louis

Cheapest flights from Thailand to St. Louis
Explore the most affordable flight options available from Thailand to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 17, 2026.

This Korean Air deal was found by Cheapflights users on 3/15. 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.
Wed 9/1611:25 pm
HKT
-
STL
2 stops35h 36m
Korean Air
Sun 9/206:45 am
STL
-
HKT
2 stops27h 25m
Korean Air
Deal found 3/15$1,203
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:55 am
BKK
-
STL
2 stops42h 08m
Japan Airlines
Wed 5/66:21 am
STL
-
BKK
2 stops35h 24m
Japan Airlines
Deal found 3/15$1,224
This Japan Airlines deal was found by Cheapflights users on 3/13. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:40 pm
BKK
-
STL
2 stops37h 28m
Japan Airlines
Tue 9/17:23 am
STL
-
BKK
2 stops34h 22m
Japan Airlines
Deal found 3/13$1,271
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Fri 8/289:35 am
BKK
-
STL
2 stops44h 49m
United Airlines
Tue 9/15:32 pm
STL
-
BKK
3 stops28h 03m
United Airlines
Deal found 3/13$1,416
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 4/293:45 pm
BKK
-
STL
2 stops50h 02m
United Airlines
Wed 5/62:35 pm
STL
-
BKK
3 stops31h 00m
United Airlines
Deal found 3/15$1,425

Find flight deals from Thailand to St. Louis

Keep the following information in mind while searching for Thailand to St. Louis flight deals. Data was last updated March 17, 2026.

Round-trip from

$1,224
(CheapOair)

One-way from

$607
(Delta)

Popular in

March

Cheapest in

February

Average price

$1,829
From Thailand to Lambert-St Louis
One-way flight from Thailand to Lambert-St Louis
High demand for flights, 4% potential price rise
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Thailand to St. Louis 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 March 17, 2026.
Use the filters below to find and compare flights from Thailand to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 8/28

9:40 pm-11:08 pm

2 stops37h 28m

Lambert-St Louis

Tue 9/1

7:23 am-5:45 am

2 stops34h 22m

$1,271

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 8/28

9:35 am-6:24 pm

2 stops44h 49m

Lambert-St Louis

Tue 9/1

5:32 pm-9:35 am

3 stops28h 03m

$1,416

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 4/29

3:45 pm-5:47 am

2 stops50h 02m

Lambert-St Louis

Wed 5/6

2:35 pm-9:35 am

3 stops31h 00m

$1,425
Quickest round-trip

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 4/29

9:40 pm-11:59 pm

2 stops38h 19m

Lambert-St Louis

Wed 5/6

3:30 pm-6:25 am

1 stop26h 55m

$4,837
Cheapest one-way

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 4/21

9:50 am-11:32 am

2 stops37h 42m

$607

Phuket CitySt. Louis

HKT - STL

HKTSTL

Phuket City

Sat 6/13

11:25 pm-12:36 am

2 stops37h 11m

$612

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 4/21

10:45 pm-7:21 pm

3 stops56h 36m

$628

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 6/11

1:25 pm-4:33 pm

3 stops39h 08m

$658

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 6/11

1:10 am-7:13 pm

3 stops54h 03m

$662

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 6/15

11:35 pm-1:55 pm

3 stops50h 20m

$670

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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

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

What is the cheapest time of day to fly from TH to STL?

Find hourly flight availability from Thailand to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 17, 2026.

When flying from Thailand to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 20% versus a flight in the morning.

What is the cheapest day to fly from Thailand to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Thailand to St. Louis. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Thailand to St. Louis flight should consider departing on Saturday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated March 17, 2026.
Get a feel of what it's like to fly with Japan Airlines and United Airlines from Thailand to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.3

Comfort

8.2

Food

7.7

Crew

8.7

Entertainment

7.8

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Evan,Feb 2026

NRT - ORD

They didn't get my order for vegetarian meals, and the non-veggie options were mediocre. But the crew was very nice an tried to help as well as they could.

Overall

8.3

Comfort

8.2

Food

7.7

Crew

8.7

Entertainment

7.8

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Evan,Feb 2026

NRT - ORD

They didn't get my order for vegetarian meals, and the non-veggie options were mediocre. But the crew was very nice an tried to help as well as they could.

Overall

8.3

Comfort

8.2

Food

7.7

Crew

8.7

Entertainment

7.8

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Evan,Feb 2026

NRT - ORD

They didn't get my order for vegetarian meals, and the non-veggie options were mediocre. But the crew was very nice an tried to help as well as they could.

Related info for your journey

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

    If you book a flight to St. Louis from Thailand, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from Thailand to St. Louis?

    For as low as $1,271, Japan Airlines can have you in St. Louis from Thailand in 37h 28m. The distance from Thailand to St. Louis is about 8737 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Thailand to St. Louis one-way?

    The cheapest airlines for a one-way flight from Thailand to St. Louis are Air Canada ($524), Delta ($608), and Cathay Pacific ($680).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Thailand to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 2 airlines flying from Thailand to St. Louis

Discover the top 2 airlines that operate flights from Thailand to St. Louis. 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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$952Average$1,236FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,410Average$1,415FlexibilityNo cancel feeOn-time69%

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