$20 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 12/23. 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.
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1 adult, Economy, 0 bags

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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

Wed, Dec 3 - Wed, Dec 10
Frontier Logo
12:50 pm - 10:33 pmATL-STL
10h 43m1 stop
Frontier Logo
3:30 pm - 9:33 pmSTL-ATL
5h 03m1 stop
$110Frontier
Find Deal
Sun, Jan 18 - Fri, Jan 23
Frontier Logo
8:55 am - 9:46 amATL-STL
1h 51mnonstop
Frontier Logo
7:43 pm - 6:13 amSTL-ATL
9h 30m1 stop
$111Frontier
Find Deal
Tue, Nov 18 - Thu, Nov 20
Frontier Logo
12:15 pm - 9:07 amATL-STL
21h 52m1 stop
Frontier Logo
3:14 pm - 5:57 pmSTL-ATL
1h 43mnonstop
$115Frontier
Find Deal
Wed, Nov 19 - Mon, Nov 24
Multiple Airlines Logo
10:13 pm - 11:01 pmATL-STL
1h 48mnonstop
Multiple Airlines Logo
7:04 pm - 1:20 pmSTL-ATL
17h 16m1 stop
$122Multiple Airlines
Find Deal
Mon, Nov 17 - Tue, Nov 18
Frontier Logo
8:00 pm - 9:07 amATL-STL
14h 07m1 stop
Frontier Logo
7:45 pm - 6:02 amSTL-ATL
9h 17m1 stop
$123Frontier
Find Deal
Thu, Dec 18 - Sun, Dec 21
Frontier Logo
8:55 am - 9:40 amATL-STL
1h 45mnonstop
Frontier Logo
10:57 am - 1:38 pmSTL-ATL
1h 41mnonstop
$124Frontier
Find Deal
Thu, Dec 25 - Sun, Jan 4
Frontier Logo
5:55 am - 10:33 pmATL-STL
17h 38m1 stop
Frontier Logo
10:57 am - 1:38 pmSTL-ATL
1h 41mnonstop
$125Frontier
Find Deal
Fri, Dec 5 - Sun, Dec 7
Frontier Logo
8:00 pm - 10:14 amATL-STL
15h 14m1 stop
Frontier Logo
10:42 am - 1:27 pmSTL-ATL
1h 45mnonstop
$128Frontier
Find Deal
Tue, Nov 18 - Thu, Nov 20
Frontier Logo
12:15 pm - 9:07 amATL-STL
21h 52m1 stop
Frontier Logo
4:13 pm - 7:50 amSTL-ATL
14h 37m1 stop
$129Frontier
Find Deal
Tue, Nov 18 - Mon, Nov 24
Multiple Airlines Logo
1:31 pm - 10:05 amATL-STL
21h 34m1 stop
Multiple Airlines Logo
7:04 pm - 1:20 pmSTL-ATL
17h 16m1 stop
$133Multiple Airlines
Find Deal

Everything you should know

Cheapest round-trip
$110
Overall average: $354
Frontier
Wed 12/3Wed 12/10
ATL - STL • 1 stop
Cheapest non-stop
$124
Typical prices: $319-$520
Frontier
Thu 12/18Sun 12/21
ATL - STL • Non-stop
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We hope you love your trip to St. Charles!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$20
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 4% 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 45m.

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

    44 direct flights run between Atlanta and St. Charles on a daily basis. On average, there are about 314 departures each week.

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

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

  • 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.

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 86 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 November, December and January. The cheapest month to fly is July.

Reviews of the top 4 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.
8.0
SouthwestOverall score based on 4239 reviews
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
8.6Crew
Airline reviews

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

2.0 MediocreAnonymous, Nov 2025ORD - LAS
Read more Southwest reviews

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

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.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Cramped seating for me. Luckily it wasn’t a long flight

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

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

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

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

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