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฿19,863+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
6 Aug — 13 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 7 July 2026.

Wed 28/1007:55
BKK
-
STL
2 stops27h 51m
Cathay Pacific
Wed 4/1111:39
STL
-
BKK
2 stops34h 01m
Cathay Pacific
Deal found 4/7฿35,967
Tue 27/1007:25
BKK
-
STL
2 stops44h 01m
แอร์แคนาดา
Thu 5/1116:05
STL
-
BKK
2 stops43h 40m
แอร์แคนาดา
Deal found 2/7฿36,466
Wed 28/1010:55
BKK
-
STL
2 stops37h 40m
Multiple Airlines
Fri 6/1119:20
STL
-
BKK
2 stops32h 25m
Multiple Airlines
Deal found 4/7฿36,533
Tue 27/1002:35
BKK
-
STL
2 stops32h 50m
Multiple Airlines
Thu 5/1115:11
STL
-
BKK
2 stops32h 54m
Multiple Airlines
Deal found 4/7฿37,032
Sat 4/707:35
BKK
-
STL
2 stops37h 11m
Multiple Airlines
Wed 8/709:08
STL
-
BKK
2 stops38h 22m
Multiple Airlines
Deal found 3/7฿37,132
Wed 8/702:30
BKK
-
STL
2 stops33h 29m
Qatar Airways
Tue 1/906:35
STL
-
BKK
2 stops42h 50m
Qatar Airways
Deal found 2/7฿37,797
Sun 12/721:35
BKK
-
STL
2 stops34h 47m
แอร์แคนาดา
Sat 29/816:40
STL
-
BKK
2 stops24h 25m
แอร์แคนาดา
Deal found 2/7฿38,163
Mon 13/707:05
BKK
-
STL
2 stops47h 37m
แอร์แคนาดา
Wed 26/813:36
STL
-
BKK
2 stops27h 29m
แอร์แคนาดา
Deal found 2/7฿38,562
Wed 8/702:30
BKK
-
STL
2 stops33h 29m
Qatar Airways
Sat 29/815:04
STL
-
BKK
2 stops52h 31m
Qatar Airways
Deal found 2/7฿38,629
Mon 13/707:05
BKK
-
STL
2 stops47h 37m
แอร์แคนาดา
Sun 30/812:10
STL
-
BKK
2 stops52h 55m
แอร์แคนาดา
Deal found 2/7฿38,662
Mon 13/707:05
BKK
-
STL
2 stops47h 37m
แอร์แคนาดา
Tue 1/917:30
STL
-
BKK
2 stops47h 35m
แอร์แคนาดา
Deal found 2/7฿38,729

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 7 July 2026.

Return from

฿35,967

One-way from

฿19,863

Popular in

July

Cheapest in

February

Average price

฿66,744
Cathay Pacific
  • Cathay Pacific
  • 28/10-4/11
  • 4 total stops
  • 61h 52m total
  • Bangkok to St. Louis
Search Deals
4/9
  • 4/9
  • 3 total stops
  • 43h 00m total
  • Bangkok to St. Louis
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿8,425 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿1,482 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 7 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

Tue 27/10

02:35-23:25

2 stops32h 50m

Lambert-St Louis

Thu 5/11

15:11-13:05

2 stops32h 54m

฿37,032

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 23/9

00:30-23:40

2 stops35h 10m

Lambert-St Louis

Mon 28/9

07:21-15:10

2 stops43h 49m

฿44,152
Fastest return journey

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 24/9

07:00-16:37

2 stops21h 37m

Lambert-St Louis

Mon 28/9

13:36-09:35

3 stops31h 59m

฿49,143
Cheapest one-way

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 19/11

14:05-00:15

2 stops47h 10m

฿20,762

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 1/9

17:30-22:35

2 stops41h 05m

฿20,795

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 29/11

11:40-16:43

2 stops42h 03m

฿22,924

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 3/9

09:55-23:59

2 stops50h 04m

฿23,224

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 18/8

10:50-12:25

2 stops37h 35m

฿23,290

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 12/8

10:50-22:35

2 stops23h 45m

฿23,590
Fastest single journey

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 2/8

11:00-21:48

2 stops22h 48m

฿24,388

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 11 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 27 hours 45 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 45 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

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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