$45 Find Cheap Flights from Atlanta to St. Charles

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Atlanta to St. Charles departing on 9/22. 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.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$75
Typical prices: $112-$238
Frontier
Fri 7/17Sun 7/19
ATL - STL • Non-stop
Cheapest one-way
$45
Typical prices: $93-$248
Frontier
Tue 9/22
ATL - STL • Non-stop
Arrival airport
You can't fly directly to St. Charles. It is served by St. Louis (STL), located 7.2 miles from St. Charles.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Atlanta to St. Charles (ATL-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Atlanta to St. Charles that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Atlanta to St. Charles

Fri, Jul 17 - Sun, Jul 19
Frontier Logo
8:05 am - 8:57 am
ATL
-
STL
1h 52mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$75Frontier
Sat, Sep 12 - Mon, Sep 28
Frontier Logo
8:50 am - 9:40 am
ATL
-
STL
1h 50mnonstop
Frontier Logo
10:35 am - 1:15 pm
STL
-
ATL
1h 40mnonstop
$76Frontier
Thu, Jul 16 - Sun, Jul 19
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$77Frontier
Wed, Jul 15 - Tue, Jul 21
Frontier Logo
8:05 am - 8:57 am
ATL
-
STL
1h 52mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$81Frontier
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
4:57 pm - 7:56 pm
STL
-
ATL
1h 59mnonstop
$82Frontier
Fri, Jul 24 - Sun, Jul 26
Frontier Logo
8:05 am - 8:57 am
ATL
-
STL
1h 52mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$83Frontier
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
4:57 pm - 7:56 pm
STL
-
ATL
1h 59mnonstop
$86Frontier
Sun, Jul 19 - Sun, Jul 26
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$87Frontier
Tue, Jul 14 - Thu, Jul 16
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$91Frontier
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
4:57 pm - 7:56 pm
STL
-
ATL
1h 59mnonstop
$92Frontier
Useful Info

Good to know

Low seasonMarch
Cheapest flight$45
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Atlanta to St. Louis

When to book flights from Atlanta to St. Charles

Are your dates flexible? Find out the best times to travel from Atlanta to St. Charles based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Atlanta to St. Charles

  • Which airports will I be using when flying from Atlanta to St. Charles?

    When flying out of Atlanta you’ll be using Atlanta Hartsfield-Jackson. St. Charles does not have its own airport so you’ll be flying into nearby Lambert-St Louis airport, which is 7.2 mi away.

  • How long does a flight from Atlanta to St. Charles take?

    Direct flights cover the 484 miles separating Atlanta and St. Charles in about 1h 36m.

  • How many flights are there between Atlanta and St. Charles?

    43 direct flights run between Atlanta and St. Charles on a daily basis. On average, there are about 303 departures each week.

  • What’s the cheapest day of the week to fly between Atlanta and St. Charles?

    Consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Atlanta, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

  • How does KAYAK find such low prices on flights from Atlanta to St. Charles?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Atlanta to St. Charles.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Atlanta to St. Charles?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Charles from Atlanta is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Atlanta to St. Charles?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Charles with an airline and back to Atlanta with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Atlanta to St. Charles?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Charles from Atlanta up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Atlanta to St. Charles?

    In the last 5 days, the cheapest one-way ticket between Atlanta and St. Charles found on KAYAK was with Frontier for $35. Frontier offered a round-trip connection from $54 and Delta from $117.

Top tips for finding cheap flights from Atlanta to St. Charles

  • There is no airport in St. Charles. Instead, you’ll be flying into St. Louis Lambert Airport when flying between Atlanta and St. Charles.
  • The cheapest flight from Atlanta to St. Charles was found 28 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be April, May and June. The cheapest month to fly is June.

Reviews of the top 3 airlines serving Atlanta to St. Charles

 
Need help choosing which airline to fly with from Atlanta to St. Charles? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4246 reviews
8.6Crew
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Communication about the delayed flight was poor. We were told to move gates three times but that was bad information. We went from gate 128 to gate 126 and then to gate 123 and back to gate 126. Communication about the delay was bad. Ended up being 1 1/2 hour late getting home.

2.0 MediocreDavid, Apr 2026
MCO - MCI
Read more Southwest reviews

Communication about the delayed flight was poor. We were told to move gates three times but that was bad information. We went from gate 128 to gate 126 and then to gate 123 and back to gate 126. Communication about the delay was bad. Ended up being 1 1/2 hour late getting home.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

Everything went smoothly and we even arrived a little bit early.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

The fluidity of the entire process of boarding the plane the flight attendants attentiveness. The flight attendants also provided coloring books for my kids who loved it.

Excellent. The lady boarding the flight was awesome. Very efficient, and she got everyone on line.

It was great! The new boeing has much more space and charging ports!

I kept getting h notifications that the flight was delayed. At the airport it was only 2 mins delay. Very confusing. No WiFi on the plan. Snacks very salty. No alternative

I like the boarding procedure. A bumpy ride, but it couldn't be helped. Please make sure the exit seats are clearly indicated.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

On 2 different flights the wifi was horrible and there was no drink or snack service.

There was no FREE wi-fi nor entertainment screens at all.

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Plane and crew on board were fine. Everything else was terrible.

Inbound plane was on time and flight departed on time with no issues while boarding.

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

My flight was canceled I was promised a reginf still not received.

They canceled flight. Hard to believe there was even a plane incoming for us to get on

Horrendous. I do not recommend Frontier. The passengers lack manners and decency, and the flight attendants lack professionalism. If I wasn’t in a bind to fly with 48 hours notice for a job interview, I would not have selected a flight with Frontier and I never plan to fly with them in the future.

I was not permitted on my flight and had to purchase another flight ticket to Las Vegas.

Everything you need to know for your flight from Atlanta to St. Charles

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