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St. Charles

$48+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — STL
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to St. Charles are usually found in August or October, 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 April 29, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$194
(Booking.com)

One-way from

$48
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$309
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Lambert-St Louis flights.
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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. 4% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/37:54 pmATL - STL
1 stop14h 18mFrontier
Sun 7/62:36 pmSTL - ATL
Nonstop1h 54mFrontier
Deal found 4/29$194
This Delta deal was found by Cheapflights users on 4/28. 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.
Fri 6/139:05 amATL - STL
Nonstop1h 38mDelta
Tue 6/173:42 pmSTL - ATL
Nonstop1h 40mDelta
Deal found 4/28$197
This Booking.com deal was found by Cheapflights users on 4/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1912:43 pmATL - STL
Nonstop1h 57mMultiple Airlines
Sun 6/226:12 pmSTL - ATL
1 stop5h 05mMultiple Airlines
Deal found 4/27$198
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 6/265:00 amATL - STL
1 stop4h 14mAmerican Airlines
Sat 7/55:20 amSTL - ATL
1 stop6h 25mAmerican Airlines
Deal found 4/28$208
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 10/210:23 pmATL - STL
1 stop10h 26mSpirit Airlines
Sun 10/58:44 amSTL - ATL
1 stop4h 38mSpirit Airlines
Deal found 4/28$214
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/288:40 amATL - STL
Nonstop1h 50mSouthwest
Thu 5/292:20 pmSTL - ATL
1 stop5h 35mSouthwest
Deal found 4/29$251
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:30 amATL - STL
1 stop5h 32mUnited Airlines
Mon 9/16:35 amSTL - ATL
1 stop4h 35mUnited Airlines
Deal found 4/28$253

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 April 29, 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 7/3

7:54 pm-9:12 am

1 stop14h 18m

Lambert-St Louis

Sun 7/6

2:36 pm-5:30 pm

Nonstop1h 54m

$194

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 6/13

9:05 am-9:43 am

Nonstop1h 38m

Lambert-St Louis

Tue 6/17

3:42 pm-6:22 pm

Nonstop1h 40m

$197

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 6/19

12:43 pm-1:40 pm

Nonstop1h 57m

Lambert-St Louis

Sun 6/22

6:12 pm-12:17 am

1 stop5h 05m

$198

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 6/26

5:00 am-8:14 am

1 stop4h 14m

Lambert-St Louis

Sat 7/5

5:20 am-12:45 pm

1 stop6h 25m

$208

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 6/12

7:20 pm-10:33 am

1 stop16h 13m

Lambert-St Louis

Mon 6/16

7:13 pm-3:16 pm

2 stops19h 03m

$231

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 5/28

7:05 pm-10:10 pm

1 stop4h 05m

Lambert-St Louis

Wed 6/4

8:20 am-10:55 am

Nonstop1h 35m

$237

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 6/27

6:45 pm-10:45 pm

1 stop5h 00m

Lambert-St Louis

Mon 6/30

3:20 pm-11:59 pm

2 stops7h 39m

$382

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 7/12

1:10 pm-1:59 pm

Nonstop1h 49m

$48

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 7/1

8:20 pm-9:00 pm

Nonstop1h 40m

$90

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 6/21

9:45 pm-5:04 pm

1 stop20h 19m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 15 results
1
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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 April 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 April 29, 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 May 26, 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. 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 April 29, 2025.

The most flights from ATL to CH5 are scheduled on a Monday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (24 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 April 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta 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.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 34 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 19 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 $48. Users have also found prices from $90 and $91 on Southwest and Spirit Airlines, 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 Delta (88%), WestJet (86%) or Southwest (84%) 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 $68. On average you can expect to pay $355. The most popular route, (Atlanta Hartsfield-Jackson - Lambert-St Louis), can usually be booked for $177.

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$171FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$185Average$469FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$186Average$219FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$224Average$322FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$245Average$320FlexibilityNo cancel feeOn-time63%

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