$52+ Cheap flights from Atlanta (ATL) to St. Charles, MO
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Atlanta to St. Charles with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to St. Charles are usually found in June or April, booked 82 days in advance, depart on a Thursday or Friday and return on a Friday
Cheap flight deals from Atlanta to St. Charles
Keep the following information in mind while searching for Atlanta to St. Charles flight deals. Data was last updated June 12, 2025.
Round-trip from | $125 (Cheapflightsfares) |
|---|---|
One-way from | $52 (FlightHub) |
Popular in | December |
Cheapest in | June |
Average price | $244 |
Find flight deals from Atlanta to St. Charles
Cheapest flights from Atlanta to St. CharlesExplore the most affordable flight options available from Atlanta to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Atlanta to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Atlanta to St. Charles that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Atlanta to St. Charles that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 10/2
9:20 am-10:07 am
Nonstop1h 47m
Lambert-St Louis
Sun 10/5
11:02 am-1:42 pm
Nonstop1h 40m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Wed 7/2
9:45 pm-5:04 pm
1 stop20h 19m
Lambert-St Louis
Fri 7/4
6:36 pm-7:22 am
1 stop11h 46m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 6/28
1:10 pm-2:07 pm
Nonstop1h 57m
Lambert-St Louis
Mon 6/30
7:13 pm-7:22 am
1 stop11h 09m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/2
11:42 am-12:18 pm
Nonstop1h 36m
Lambert-St Louis
Mon 8/4
5:23 pm-8:13 pm
Nonstop1h 50m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Wed 8/13
10:50 am-2:30 pm
1 stop4h 40m
Lambert-St Louis
Fri 8/15
7:50 am-10:25 am
Nonstop1h 35m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 7/22
8:16 pm-11:59 pm
1 stop4h 43m
Lambert-St Louis
Sat 7/26
5:30 am-11:47 am
1 stop5h 17m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Wed 7/23
8:30 am-12:27 pm
1 stop4h 57m
Lambert-St Louis
Sat 7/26
7:55 am-1:42 pm
1 stop4h 47m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Wed 9/10
10:23 pm-7:49 am
1 stop10h 26m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/16
1:10 pm-1:59 pm
Nonstop1h 49m
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 9/16
1:35 pm-2:15 pm
Nonstop1h 40m
Best time to book a flight from Atlanta to St. Charles
Have a flexible travel schedule? Discover the best time to fly to St. Charles from Atlanta with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Atlanta to St. Charles
How far ahead should I book a flight from Atlanta to St. Charles?
Use this chart to determine the optimal time to book a round-trip flight from Atlanta to St. Charles. Price data was last updated on June 9, 2025.
The best time to book flights from Atlanta to St. Charles is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Atlanta to St. Charles?
Currently, August is the cheapest month in which you can book a flight from Atlanta to St. Charles (average of $311). Flying from Atlanta to St. Charles in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ATL to CH5?
Find hourly flight availability from Atlanta to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Atlanta to St. Charles as you normally would.
What is the cheapest day to fly from Atlanta to St. Charles?
Use this chart to determine the cheapest time to fly round-trip from Atlanta to St. Charles. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Atlanta to St. Charles flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Atlanta to St. Charles
Explore weekly flight availability from Atlanta to St. Charles. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.
The most flights from ATL to CH5 are scheduled on a Monday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
Rainfall in St. Charles by month
Plan your trip to St. Charles by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Charles ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Charles when rainfall is around 2.2 in.
Temperature in St. Charles by month
Plan your trip to St. Charles by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Charles, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing St. Charles
Get insights into the airlines that provide service to St. Charles. 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. Charles. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines from Atlanta to St. Charles by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
John,May 2025
PVD - BNA
Related info for your journey
Find useful and relevant information for your journey from Atlanta to St. Charles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Atlanta to St. Charles
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Atlanta to St. Charles
Discover the top 5 airlines that operate flights from Atlanta to St. Charles. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$133 | Average$425 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$186 | Average$213 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$198 | Average$313 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$216 | Average$315 | FlexibilityNo cancel fee | On-time63% |