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฿19,755+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
24 Aug — 31 Aug1
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 25 July 2026.

Sun 20/907:35
BKK
-
STL
2 stops28h 08m
Multiple Airlines
Wed 21/1019:10
STL
-
BKK
2 stops30h 50m
Multiple Airlines
Deal found 23/7฿33,813
Fri 4/911:00
BKK
-
STL
2 stops34h 24m
Multiple Airlines
Fri 11/918:00
STL
-
BKK
2 stops29h 05m
Multiple Airlines
Deal found 20/7฿33,914
Mon 7/911:00
BKK
-
STL
2 stops24h 42m
Cathay Pacific
Mon 14/911:01
STL
-
BKK
2 stops25h 09m
Cathay Pacific
Deal found 24/7฿34,656
Sun 4/1011:00
BKK
-
STL
2 stops22h 57m
Cathay Pacific
Mon 19/1013:06
STL
-
BKK
2 stops23h 04m
Cathay Pacific
Deal found 20/7฿34,723
Sat 5/911:00
BKK
-
STL
2 stops39h 45m
Multiple Airlines
Sat 19/911:01
STL
-
BKK
2 stops36h 29m
Multiple Airlines
Deal found 22/7฿35,060
Mon 5/1019:10
BKK
-
STL
2 stops38h 49m
Cathay Pacific
Tue 20/1013:06
STL
-
BKK
2 stops23h 04m
Cathay Pacific
Deal found 20/7฿35,229
Sat 3/1011:00
BKK
-
STL
2 stops24h 43m
Cathay Pacific
Tue 20/1019:10
STL
-
BKK
2 stops26h 50m
Cathay Pacific
Deal found 20/7฿36,173
Thu 29/1017:50
BKK
-
STL
3 stops40h 55m
Multiple Airlines
Fri 13/1119:20
STL
-
BKK
2 stops25h 30m
Multiple Airlines
Deal found 21/7฿37,353
Sat 3/1011:00
BKK
-
STL
2 stops24h 43m
Cathay Pacific
Sun 18/1019:10
STL
-
BKK
2 stops26h 50m
Cathay Pacific
Deal found 20/7฿38,162
Mon 5/1007:05
BKK
-
STL
1 stop27h 25m
Asiana Airlines
Mon 19/1008:55
STL
-
BKK
2 stops26h 40m
Asiana Airlines
Deal found 20/7฿38,330
Sat 3/1017:30
BKK
-
STL
3 stops30h 45m
Multiple Airlines
Sat 17/1016:42
STL
-
BKK
2 stops31h 28m
Multiple Airlines
Deal found 20/7฿39,780

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 25 July 2026.

Return from

฿33,813

One-way from

฿19,755

Popular in

July

Cheapest in

February

Average price

฿67,626
20/9-21/10
  • 20/9-21/10
  • 4 total stops
  • 58h 58m total
  • Bangkok to St. Louis
Search Deals
8/11
  • 8/11
  • 3 total stops
  • 44h 00m total
  • Bangkok to St. Louis
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿8,537 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿1,501 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 25 July 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

Sun 20/9

07:35-23:43

2 stops28h 08m

Lambert-St Louis

Wed 21/10

19:10-14:00

2 stops30h 50m

฿33,813

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 3/10

11:00-08:20

2 stops33h 20m

Lambert-St Louis

Sat 17/10

13:06-00:10

2 stops23h 04m

฿33,914

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 5/9

11:00-14:45

2 stops39h 45m

Lambert-St Louis

Sat 19/9

11:01-11:30

2 stops36h 29m

฿35,060

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 29/10

07:55-23:42

2 stops27h 47m

Lambert-St Louis

Fri 13/11

19:05-16:40

2 stops32h 35m

฿35,060
Fastest return journey

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 3/10

11:00-23:43

2 stops24h 43m

Lambert-St Louis

Mon 19/10

19:10-10:00

2 stops26h 50m

฿36,173

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 5/10

19:10-21:59

2 stops38h 49m

Lambert-St Louis

Sat 17/10

19:10-10:00

2 stops26h 50m

฿36,173

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 7/9

07:00-22:27

2 stops27h 27m

Lambert-St Louis

Mon 14/9

10:53-09:35

3 stops34h 42m

฿49,084

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 4/10

07:00-18:43

2 stops23h 43m

Lambert-St Louis

Tue 20/10

17:36-09:35

3 stops27h 59m

฿49,320
Cheapest one-way

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 19/11

17:40-19:25

2 stops38h 45m

฿20,632

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 15/8

13:10-18:15

3 stops41h 05m

฿26,599

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
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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 27 hours 47 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 (27 hours 47 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. St Ann Townhome Less Than 1 Mi to International 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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Find flights to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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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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