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฿18,646+ 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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
8 Jun — 15 Jun1
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 9 May 2026.

Thu 22/1009:40
BKK
-
STL
2 stops25h 25m
Japan Airlines
Mon 26/1008:30
STL
-
BKK
2 stops32h 35m
Japan Airlines
Deal found 5/5฿41,157
Wed 15/707:05
BKK
-
STL
2 stops42h 57m
แอร์แคนาดา
Mon 20/714:40
STL
-
BKK
2 stops43h 15m
แอร์แคนาดา
Deal found 6/5฿42,251
Tue 2/619:45
BKK
-
STL
2 stops40h 09m
Qatar Airways
Mon 13/709:39
STL
-
BKK
2 stops45h 46m
Qatar Airways
Deal found 7/5฿42,412
Mon 1/607:05
BKK
-
STL
2 stops50h 25m
แอร์แคนาดา
Mon 13/705:10
STL
-
BKK
2 stops35h 55m
แอร์แคนาดา
Deal found 7/5฿42,831
Wed 15/707:05
BKK
-
STL
2 stops42h 57m
แอร์แคนาดา
Sun 26/708:55
STL
-
BKK
2 stops25h 00m
แอร์แคนาดา
Deal found 6/5฿42,928
Fri 17/707:05
BKK
-
STL
2 stops42h 57m
แอร์แคนาดา
Mon 20/714:40
STL
-
BKK
2 stops43h 15m
แอร์แคนาดา
Deal found 6/5฿43,057
Thu 17/921:05
BKK
-
STL
2 stops55h 37m
Qatar Airways
Mon 21/910:14
STL
-
BKK
2 stops32h 06m
Qatar Airways
Deal found 8/5฿43,314
Wed 15/707:05
BKK
-
STL
2 stops42h 57m
แอร์แคนาดา
Sat 25/712:10
STL
-
BKK
2 stops45h 45m
แอร์แคนาดา
Deal found 6/5฿43,507
Fri 17/707:05
BKK
-
STL
2 stops42h 57m
แอร์แคนาดา
Sun 26/708:55
STL
-
BKK
2 stops25h 00m
แอร์แคนาดา
Deal found 6/5฿43,765
Mon 1/611:45
BKK
-
STL
2 stops24h 09m
Multiple Airlines
Thu 16/706:02
STL
-
BKK
2 stops40h 38m
Multiple Airlines
Deal found 7/5฿44,216

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 9 May 2026.

Return from

฿41,157

One-way from

฿18,646

Popular in

March

Cheapest in

February

Average price

฿38,323
Japan Airlines
  • Japan Airlines
  • 22/10-26/10
  • 4 total stops
  • 58h 00m total
  • Bangkok to St. Louis
Search Deals
21/5
  • 21/5
  • 2 total stops
  • 34h 34m total
  • Bangkok to St. Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price.
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿1,465 potential savings vs. average return price).
Search Deals
Average for return flights in May 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 9 May 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

Thu 22/10

09:40-23:05

2 stops25h 25m

Lambert-St Louis

Mon 26/10

08:30-05:05

2 stops32h 35m

฿41,189

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 22/10

09:35-14:18

2 stops40h 43m

Lambert-St Louis

Mon 26/10

17:18-11:25

3 stops30h 07m

฿47,372
Fastest return journey

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 2/6

09:50-00:30

2 stops26h 40m

Lambert-St Louis

Sun 19/7

08:48-23:35

2 stops26h 47m

฿47,404

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 2/6

15:45-10:39

3 stops30h 54m

Lambert-St Louis

Mon 13/7

05:10-23:55

2 stops30h 45m

฿48,016

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 17/9

15:45-10:34

3 stops30h 49m

Lambert-St Louis

Mon 21/9

13:36-09:35

3 stops31h 59m

฿48,306

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 29/5

19:40-21:42

2 stops38h 02m

Lambert-St Louis

Wed 15/7

14:32-06:20

2 stops27h 48m

฿48,563

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 31/5

15:45-21:10

3 stops41h 25m

Lambert-St Louis

Mon 13/7

17:33-09:35

3 stops28h 02m

฿50,431
Cheapest one-way

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 2/6

02:30-23:54

2 stops33h 24m

฿20,739

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 6/7

17:50-19:23

3 stops37h 33m

฿24,217

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 5/7

03:00-23:59

2 stops32h 59m

฿24,733

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 15 resultsSorted by cheapest first
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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 25 hours 25 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.

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).

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.

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

    For those looking to save time traveling to St. Louis, Bangkok offers the quickest one-way flight (25 hours 25 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. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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How does Cheapflights help users find flights to St. Louis?

Deals for St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to St. Louis?

Cheapflights simply makes it quick and affordable to book flights to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights to St. Louis with no change fees?

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

Can Cheapflights notify me if prices for flights to St. Louis become cheaper?

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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