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St. Charles

$29+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — STL
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to St. Charles are usually found in July or June, 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 July 31, 2025.

Round-trip from

$102
(Cheapflightsfares)

One-way from

$29
(Cheapflightsfares)

Popular in

December

Cheapest in

July

Average price

$225
From Atlanta Hartsfield-Jackson to St. Charles
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One-way flight from Atlanta Hartsfield-Jackson to St. Charles
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Highest demand for flights based on searches. 10% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Atlanta to St. Charles

Cheapest flights from Atlanta to St. Charles
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 July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
Thu 9/182:16 pmATL - STL
Nonstop1h 48mFrontier
Sun 9/214:00 pmSTL - ATL
Nonstop1h 44mFrontier
Deal found 7/29$102
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/72:16 pmATL - STL
Nonstop1h 48mMultiple Airlines
Thu 9/1112:05 pmSTL - ATL
1 stop6h 44mMultiple Airlines
Deal found 7/29$120
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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.
Thu 10/26:15 amATL - STL
1 stop5h 35mSpirit Airlines
Sun 10/512:05 pmSTL - ATL
1 stop10h 06mSpirit Airlines
Deal found 7/30$132
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 8/281:59 pmATL - STL
Nonstop1h 38mDelta
Mon 9/16:00 amSTL - ATL
Nonstop1h 38mDelta
Deal found 7/29$147

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 July 31, 2025.
Use the filters below to find and compare flights from Atlanta to St. Charles that are best for you.

Fly from

Atlanta

Fly to

St. Charles

Route

Depart

Return

Price

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 9/18

2:16 pm-3:04 pm

Nonstop1h 48m

Lambert-St Louis

Sun 9/21

4:00 pm-6:44 pm

Nonstop1h 44m

$102

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sun 9/7

2:16 pm-3:04 pm

Nonstop1h 48m

Lambert-St Louis

Thu 9/11

12:05 pm-7:49 pm

1 stop6h 44m

$120

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 10/2

6:15 am-10:50 am

1 stop5h 35m

Lambert-St Louis

Sun 10/5

12:05 pm-11:11 pm

1 stop10h 06m

$132

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 8/28

1:59 pm-2:37 pm

Nonstop1h 38m

Lambert-St Louis

Mon 9/1

6:00 am-8:38 am

Nonstop1h 38m

$147

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 10/9

9:20 am-10:07 am

Nonstop1h 47m

$29

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 9/4

6:15 am-10:50 am

1 stop5h 35m

$64

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 9/5

8:25 am-9:10 am

Nonstop1h 45m

$74

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 9/2

4:46 pm-9:02 pm

1 stop5h 16m

$94

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sun 8/31

11:55 am-12:31 pm

Nonstop1h 36m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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.
Estimated round-trip 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 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 July 25, 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 July 31, 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 Saturday at noon when fares are most often at their lowest. Sunday afternoons 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 July 31, 2025.

The most flights from ATL to CH5 are scheduled on a Thursday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

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 July 31, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Atlanta to St. Charles to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • What airport do you fly from for flights from Atlanta to St. Charles?

    Located just 8.2 mi from the city center, Atlanta Hartsfield-Jackson is the airport most travelers will use when flying to St. Charles from Atlanta. Booking flights from Hartsfield-Jackson (ATL) to St. Charles should be relatively easy as there are 28 daily outbound flights to St. Charles from 5 different airlines.

  • How popular is this Atlanta to St. Charles flight route?

    Flights from Atlanta Hartsfield-Jackson to St. Charles have been viewed 34 times in the past calendar month.

  • What are the cheapest airlines to fly from Atlanta to St. Charles one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $29. Users have also found prices from $64 and $74 on Spirit Airlines and Southwest, respectively.

  • What are the most reliable airlines from Atlanta to St. Charles?

    No one likes to see their flight delayed. When booking a flight from Atlanta to St. Charles consider choosing Frontier (87%), WestJet (78%) or Aeromexico (77%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Atlanta to St. Charles?

    The cheapest flight price from Atlanta to St. Charles is $93. On average you can expect to pay $346. The most popular route, (Atlanta Hartsfield-Jackson - Lambert-St Louis), can usually be booked for $147.

  • Can I find deals for flights from Atlanta to St. Charles that include hotel bookings?

    Yes. In addition to deals on Atlanta to St. Charles flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Atlanta to St. Charles?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Atlanta to St. Charles.

  • Can I find deals for business class flights from Atlanta to St. Charles?

    Yes. Cheapflights offers flight deals from Atlanta to St. Charles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

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Alternative routes for Atlanta to St. Charles

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$91Average$178FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$133Average$466FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$194Average$216FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$197Average$312FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$197Average$314FlexibilityNo cancel feeOn-time63%

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