฿5,060+ Cheap flights from St. Louis
This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
What to know about flights from St. Louis
Discover essential information about flights departing from St. Louis, including flight schedules, destinations, airlines operating at the St. Louis airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 1 September 2025.
Good one-way deal | ฿15,470 or less |
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Find flights from St. Louis
Cheapest flights from St. LouisExplore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2025.
Explore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2025.
Find flights from St. Louis within your budget
Fly to
Route
Depart
Return
Price
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 7/10
05:20-23:00
2 stops29h 40m
Bangkok Suvarnabhumi
Tue 21/10
08:05-20:53
2 stops24h 48m
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 7/1
15:36-05:05
2 stops24h 29m
Bangkok Suvarnabhumi
Tue 3/3
01:10-23:08
2 stops34h 58m
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 6/10
20:05-15:10
2 stops31h 05m
Bangkok Suvarnabhumi
Tue 4/11
08:05-16:47
2 stops21h 42m
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Thu 11/9
09:56-23:50
2 stops25h 54m
Bangkok Suvarnabhumi
Mon 15/9
11:00-22:50
2 stops23h 50m
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Thu 20/11
07:00-10:40
2 stops38h 40m
Bangkok Suvarnabhumi
Wed 26/11
13:05-16:25
2 stops40h 20m
St. LouisPhuket City
STL - HKT
STLHKT
Lambert-St Louis
Tue 14/10
06:39-10:50
2 stops40h 11m
Phuket City
Tue 21/10
11:50-23:26
2 stops47h 36m
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 3/2
06:00-23:20
2 stops28h 20m
Bangkok Suvarnabhumi
Wed 11/2
00:55-23:10
2 stops35h 15m
St. LouisChiang Mai
STL - CNX
STLCNX
Lambert-St Louis
Mon 22/9
08:40-21:55
2 stops25h 15m
Chiang Mai
Wed 1/10
23:15-23:24
2 stops36h 09m
St. LouisPhuket City
STL - HKT
STLHKT
Lambert-St Louis
Sun 19/10
20:05-10:50
2 stops50h 45m
Phuket City
Sun 26/10
18:35-23:54
2 stops41h 19m
St. LouisPhuket City
STL - HKT
STLHKT
Lambert-St Louis
Sun 22/2
14:55-21:35
2 stops41h 40m
Phuket City
Sat 28/2
22:55-23:56
2 stops38h 01m
Best time to book a flight from St. Louis
Have a flexible travel schedule? Discover the best time to fly from St. Louis with our price prediction graph.
Travel insights for flights from St. Louis
Get recent, data-driven insights about flights from St. Louis including ideal travel times, pricing trends, and more.
When is the best time to book a flight from St. Louis?
Use this chart to determine the optimal time to book a return flight from St. Louis to Suvarnabhumi. Price data was last updated on 29 August 2025.
Booking 60 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from St. Louis?
Currently, August is the cheapest month in which you can book a flight from St. Louis (average of ฿31,200). Flying from St. Louis in June will prove the most costly (average of ฿40,708). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.
What are popular destinations to fly to from St. Louis?
If you’re flying from St. Louis, these routes are more frequently taken by airlines Chicago (743 flights per day), Atlanta (193 flights per day) and Dallas (147 flights per day).
What is the cheapest place to fly to from St. Louis?
The cheapest city to fly to from St. Louis is Houston Hobby, with prices starting at ฿15,470. Explore other affordable destinations below.
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Direct flights from Missouri
Book a direct flight from one of these other cities located in Missouri.
Related info for your journey
Access useful and relevant information related to your journey from St. Louis. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 1 September 2025.
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Can Cheapflights find flights from St. Louis with no change fees?
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Can Cheapflights notify me if prices for flights from St. Louis become cheaper?
Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.