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฿19,379+ Cheap flights to St. Louis

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
15 Apr — 22 Apr1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 16 March 2026.

Wed 29/407:55
BKK
-
STL
2 stops42h 08m
Japan Airlines
Wed 6/506:21
STL
-
BKK
2 stops35h 24m
Japan Airlines
Deal found 15/3฿39,467
Fri 28/821:40
BKK
-
STL
2 stops37h 28m
Japan Airlines
Tue 1/907:23
STL
-
BKK
2 stops34h 22m
Japan Airlines
Deal found 13/3฿40,983
Fri 28/809:35
BKK
-
STL
2 stops44h 49m
United Airlines
Tue 1/917:32
STL
-
BKK
3 stops28h 03m
United Airlines
Deal found 13/3฿45,658
Wed 29/415:45
BKK
-
STL
2 stops50h 02m
United Airlines
Wed 6/514:35
STL
-
BKK
3 stops31h 00m
United Airlines
Deal found 15/3฿45,949

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 16 March 2026.

Return from

฿39,467

One-way from

฿19,379

Popular in

March

Cheapest in

February

Average price

฿58,975
Japan Airlines
  • Japan Airlines
  • 29/4-6/5
  • 4 total stops
  • 77h 32m total
  • Bangkok to St. Louis
Search Deals
2/4
  • 2/4
  • 2 total stops
  • 34h 39m total
  • Bangkok to St. Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price.
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿1,442 potential savings vs. average return price).
Search Deals
Average for return flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to St. Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 16 March 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 28/8

21:40-23:08

2 stops37h 28m

Lambert-St Louis

Tue 1/9

07:23-05:45

2 stops34h 22m

฿40,983

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 28/8

09:35-18:24

2 stops44h 49m

Lambert-St Louis

Tue 1/9

17:32-09:35

3 stops28h 03m

฿45,658

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 29/4

15:45-05:47

2 stops50h 02m

Lambert-St Louis

Wed 6/5

14:35-09:35

3 stops31h 00m

฿45,949

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 11/4

01:15-21:13

2 stops31h 58m

Lambert-St Louis

Sun 19/4

15:15-18:20

2 stops39h 05m

฿101,957
Fastest return journey

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 29/4

21:40-23:59

2 stops38h 19m

Lambert-St Louis

Wed 6/5

15:30-06:25

1 stop26h 55m

฿155,967
Cheapest one-way

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 21/4

09:50-11:32

2 stops37h 42m

฿19,572

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 21/4

22:45-19:21

3 stops56h 36m

฿20,250

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 11/6

01:10-19:13

3 stops54h 03m

฿21,346

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 22/8

13:20-12:20

2 stops35h 00m

฿25,667

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 13/6

21:40-00:36

2 stops38h 56m

฿26,505

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis with our price prediction graph.
Estimated return 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 to St. Louis

How long is the flight to St. Louis?

On average, a flight from Bangkok to St. Louis takes 37 hours 28 minutes. Flights to St. Louis from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to St. Louis?

The most popular airline flying from Bangkok to St. Louis is Japan Airlines.

Japan Airlines
Japan Airlines
From ฿38,386

What are the cheapest airlines that fly to St. Louis?

The cheapest airline flying from Bangkok to St. Louis is Japan Airlines.

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 16 March 2026.
Check out reviews from past customers who have flown Japan Airlines to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,735 reviews
Check prices

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Crew

8.7

Overall

8.3

Food

7.7

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.
Japan Airlines
8.3
Very Good
1,735 reviews
Japan Airlines
8.3
Very Good
1,735 reviews
Check prices

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Crew

8.7

Overall

8.3

Food

7.7

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.

FAQs about flying to St. Louis

  • What airport do you fly into for flights to St. Louis?

    Booking a flight to Lambert-St Louis (STL) is your only option if you intend on flying to St. Louis. It is only a 20.4 km journey from Lambert-St Louis to St. Louis’s city centre.

  • Can I find cheaper flights to St. Louis if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Louis on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Louis?

    Based on reviews from Cheapflights users, Japan Airlines is rated the highest out of the airlines that fly to St. Louis.

  • Where does the fastest flight to St. Louis depart from?

    For those looking to save time traveling to St. Louis, Phuket City offers the quickest one-way flight (35 hours 36 minutes).

  • Does Lambert-St Louis have rental cars?

    Yes. Those touching down at Lambert-St Louis can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. 3-bedroom building in serene Saint Ann with WiFi, AC is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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Users can book flights with no change fees policies with our dedicated filters. Book flights to St. Louis flexibly with Cheapflights today.

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Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to St. Louis today and book when you’re ready!

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