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Cheap flights from Atlanta to St. Louis from $29

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Atlanta to St. Louis departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Atlanta to St. Louis

Cheap round-trip flights

Frontier Logo
2:16 pm - 3:04 pmATL-STL
1h 48mnonstop
Frontier Logo
4:00 pm - 6:43 pmSTL-ATL
1h 43mnonstop
$77Frontier
Find Deal
jue., oct. 2 - dom., oct. 5
Frontier Logo
9:20 am - 10:07 amATL-STL
1h 47mnonstop
Frontier Logo
11:02 am - 1:42 pmSTL-ATL
1h 40mnonstop
$78Frontier
Find Deal
jue., nov. 6 - dom., nov. 9
Frontier Logo
12:42 pm - 1:33 pmATL-STL
1h 51mnonstop
Frontier Logo
2:01 pm - 4:55 pmSTL-ATL
1h 54mnonstop
$79Frontier
Find Deal
sáb., ago. 23 - lun., ago. 25
Frontier Logo
12:05 pm - 12:56 pmATL-STL
1h 51mnonstop
Frontier Logo
2:01 pm - 4:55 pmSTL-ATL
1h 54mnonstop
$82Frontier
Find Deal
vie., ago. 29 - lun., sep. 1
 Logo
6:35 am - 1:32 pmATL-STL
7h 57m1 stop
 Logo
2:01 pm - 4:55 pmSTL-ATL
1h 54mnonstop
jue., ago. 28 - lun., sep. 1
 Logo
6:15 am - 1:35 pmATL-STL
8h 20m1 stop
 Logo
4:00 pm - 6:44 pmSTL-ATL
1h 44mnonstop
jue., sep. 18 - lun., sep. 22
Delta Logo
5:20 pm - 6:02 pmATL-STL
1h 42mnonstop
Delta Logo
5:40 pm - 8:20 pmSTL-ATL
1h 40mnonstop
$140Delta
Find Deal
sáb., oct. 11 - lun., oct. 13
Southwest Logo
8:45 am - 9:30 amATL-STL
1h 45mnonstop
Southwest Logo
9:40 am - 12:15 pmSTL-ATL
1h 35mnonstop
$143Southwest
Find Deal
mié., sep. 17 - jue., sep. 18
Southwest Logo
7:50 am - 11:30 amATL-STL
4h 40m1 stop
Southwest Logo
8:00 am - 1:35 pmSTL-ATL
4h 35m1 stop
$157Southwest
Find Deal
jue., ago. 14 - lun., ago. 18
American Airlines Logo
5:00 am - 8:14 amATL-STL
4h 14m1 stop
American Airlines Logo
5:52 pm - 12:09 amSTL-ATL
5h 17m1 stop
$159American Airlines
Find Deal
lun., ago. 4 - lun., ago. 11

Southwest flights from Atlanta to St. Louis

Our best Southwest deals on Atlanta to St. Louis flight tickets
Southwest
Sep 17
ATL8:45 amAtlanta Hartsfield-Jackson
1h 45m
STL9:30 amLambert-St Louis
Sep 18
STL9:40 amLambert-St Louis
1h 35m
ATL12:15 pmAtlanta Hartsfield-Jackson
Southwest
Aug 14
ATL7:50 amAtlanta Hartsfield-Jackson
4h 40m
1 stop
STL11:30 amLambert-St Louis
Aug 18
STL8:00 amLambert-St Louis
4h 35m
1 stop
ATL1:35 pmAtlanta Hartsfield-Jackson
Southwest
Aug 23
ATL2:45 pmAtlanta Hartsfield-Jackson
6h 30m
2 stops
STL8:15 pmLambert-St Louis
Aug 25
STL1:30 pmLambert-St Louis
1h 35m
ATL4:05 pmAtlanta Hartsfield-Jackson

Frontier flights from Atlanta to St. Louis

Our best Frontier deals on Atlanta to St. Louis flight tickets
Frontier
Oct 2
ATL2:16 pmAtlanta Hartsfield-Jackson
1h 48m
STL3:04 pmLambert-St Louis
Oct 5
STL4:00 pmLambert-St Louis
1h 43m
ATL6:43 pmAtlanta Hartsfield-Jackson
Frontier
Nov 6
ATL9:20 amAtlanta Hartsfield-Jackson
1h 47m
STL10:07 amLambert-St Louis
Nov 9
STL11:02 amLambert-St Louis
1h 40m
ATL1:42 pmAtlanta Hartsfield-Jackson
Frontier
Aug 23
ATL12:42 pmAtlanta Hartsfield-Jackson
1h 51m
STL1:33 pmLambert-St Louis
Aug 25
STL2:01 pmLambert-St Louis
1h 54m
ATL4:55 pmAtlanta Hartsfield-Jackson

See travel insights to St. Louis from

How to get the cheapest flight ticket from Atlanta to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, June is the cheapest month to fly from Atlanta to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $238. The month of April is another great option to travel to St. Louis, with average flight prices from Atlanta averaging around $272.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $308. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $386. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Atlanta at noon is the least expensive time of day to depart. momondo users have found prices as low as $314 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $332 per ticket.

What is the cheapest Atlanta Hartsfield-Jackson to Lambert-St Louis flight route?

Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best Atlanta Hartsfield-Jackson - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Atlanta for as low as $239 on momondo.

What cabin class options are available on Atlanta Hartsfield-Jackson to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Atlanta Hartsfield-Jackson to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Atlanta to St. Louis flight prices changed over time?

As of July 2025, prices for Atlanta to St. Louis flights are approximately 39% cheaper when compared to flights at the same time last year.

When to book flights from Atlanta to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Atlanta to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Atlanta to St. Louis (ATL to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Atlanta to St. Louis

Best Price Found

$29

Fastest flight time

1h 40m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Atlanta in the past 72 hours is $29. The best round-trip flight deal from Atlanta to St. Louis found on momondo in the last 72 hours is $77.
The fastest flight from Atlanta to St. Louis takes 1h 40m
Direct flights go from Atlanta to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Atlanta Hartsfield-Jackson to Lambert-St Louis by plane?

    Atlanta Hartsfield-Jackson and Lambert-St Louis are 466.6 mi apart from one another. Flights usually cover this in 1h 42m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?

    Prices for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Atlanta to St. Louis?

  • What is the most popular airline from Atlanta to St. Louis?


Best airlines flying from Atlanta to St. Louis

Compare and see reviews for airlines that fly from Atlanta to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $102Free CancellationRating
5.9
3,268 reviews
Search Frontier flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Southern / MokulelePriceFrom $193Free CancellationRating
6.4
26 reviews
Search Southern / Mokulele flights
DeltaPriceFrom $197Free CancellationRating
8.0
7,958 reviews
Search Delta flights
SouthwestPriceFrom $215Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
  • Delta Flights From Atlanta to St. Louis

    Across 29 Delta flights from Atlanta to St. Louis this week, the average price was $312, with the best Delta deals starting from $197 round-trip. 7,958 users have rated Delta on momondo, with an average score of 8.0/10.

  • Southwest Flights From Atlanta to St. Louis

    The best Southwest deal for Atlanta to St. Louis flight tickets found on momondo in the last 72 hours was $215, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $314 round-trip. Southwest operates 23 flights out of Atlanta into St. Louis in an average week, so prices vary by time and availability. 4,253 Southwest reviews by users on momondo have scored the airline at 8.0/10.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Alton
Wentzville
Festus
Glencoe
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Atlanta to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Atlanta.

Can I find flights from Atlanta to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Atlanta with this policy.

How can momondo help me find flights from Atlanta to St. Louis?

Once all potential Atlanta to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Atlanta to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Atlanta. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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1 adult
lun. 7/14
lun. 7/21

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