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Cheap flights from Atlanta to St. Louis from $28

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 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Atlanta to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
8:32 pm - 11:16 pm
STL
-
ATL
1h 44mnonstop
$86Frontier
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
1:56 pm - 2:48 pm
ATL
-
STL
1h 52mnonstop
Frontier Logo
3:43 pm - 6:28 pm
STL
-
ATL
1h 45mnonstop
$93Frontier
Fri, Jan 9 - Sun, Jan 11
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
5:42 pm - 7:58 am
STL
-
ATL
13h 16m1 stop
$94Frontier
Sat, Jan 24 - Tue, Jan 27
Frontier Logo
7:56 pm - 8:04 am
ATL
-
STL
13h 08m1 stop
Frontier Logo
8:22 pm - 11:06 pm
STL
-
ATL
1h 44mnonstop
$95Frontier
Sat, Feb 7 - Mon, Feb 9
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
3:46 pm - 11:11 am
STL
-
ATL
18h 25m1 stop
$99Frontier
Wed, Jan 14 - Wed, Jan 21
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
5:42 pm - 2:35 pm
STL
-
ATL
19h 53m1 stop
$100Frontier
Sat, Jan 17 - Fri, Jan 23
Frontier Logo
10:46 pm - 7:50 am
ATL
-
STL
10h 04m1 stop
Frontier Logo
8:22 pm - 11:06 pm
STL
-
ATL
1h 44mnonstop
$106Frontier
Thu, Jan 8 - Wed, Jan 21
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
6:41 pm - 7:03 am
STL
-
ATL
11h 22m1 stop
$110Frontier
Wed, Feb 18 - Sat, Feb 21
Frontier Logo
10:56 pm - 10:23 am
ATL
-
STL
12h 27m1 stop
Frontier Logo
8:22 pm - 11:06 pm
STL
-
ATL
1h 44mnonstop
$111Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
5:42 pm - 5:01 pm
STL
-
ATL
22h 19m1 stop
$112Frontier
Mon, Jan 19 - Thu, Jan 22

Frontier flights from Atlanta to St. Louis

Our best Frontier deals on Atlanta to St. Louis flight tickets
Frontier
Jan 9
ATL1:56 pmAtlanta Hartsfield-Jackson
1h 52m
STL2:48 pmLambert-St Louis
Jan 11
STL3:43 pmLambert-St Louis
1h 45m
ATL6:28 pmAtlanta Hartsfield-Jackson
$93
Find similar
Frontier
Jan 24
ATL6:00 amAtlanta Hartsfield-Jackson
1h 51m
STL6:51 amLambert-St Louis
Jan 27
STL5:42 pmLambert-St Louis
13h 16m
1 stop
ATL7:58 amAtlanta Hartsfield-Jackson
$94
Find similar
Frontier
Feb 7
ATL7:56 pmAtlanta Hartsfield-Jackson
13h 08m
1 stop
STL8:04 amLambert-St Louis
Feb 9
STL8:22 pmLambert-St Louis
1h 44m
ATL11:06 pmAtlanta Hartsfield-Jackson
$95
Find similar

Delta flights from Atlanta to St. Louis

Our best Delta deals on Atlanta to St. Louis flight tickets
Delta
Jan 14
ATL10:56 pmAtlanta Hartsfield-Jackson
1h 43m
STL11:39 pmLambert-St Louis
Jan 15
STL6:55 pmLambert-St Louis
1h 53m
ATL9:48 pmAtlanta Hartsfield-Jackson
$152
Find similar
Delta
Jan 19
ATL5:08 pmAtlanta Hartsfield-Jackson
1h 42m
STL5:50 pmLambert-St Louis
Jan 22
STL7:10 amLambert-St Louis
1h 45m
ATL9:55 amAtlanta Hartsfield-Jackson
$171
Find similar
Delta
Jan 17
ATL10:15 amAtlanta Hartsfield-Jackson
1h 47m
STL11:02 amLambert-St Louis
Jan 19
STL6:00 amLambert-St Louis
1h 45m
ATL8:45 amAtlanta Hartsfield-Jackson
$173
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Atlanta to St. Louis 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Atlanta to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 1/16

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Mon 1/19

8:32 pm-11:16 pm

Nonstop1h 44m

$86

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 1/9

1:56 pm-2:48 pm

Nonstop1h 52m

Lambert-St Louis

Sun 1/11

3:43 pm-6:28 pm

Nonstop1h 45m

$93

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 1/24

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Tue 1/27

5:42 pm-7:58 am

1 stop13h 16m

$94

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 2/7

7:56 pm-8:04 am

1 stop13h 08m

Lambert-St Louis

Mon 2/9

8:22 pm-11:06 pm

Nonstop1h 44m

$95

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 1/14

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Wed 1/21

3:46 pm-11:11 am

1 stop18h 25m

$99

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 1/17

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Fri 1/23

5:42 pm-2:35 pm

1 stop19h 53m

$100

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 1/8

10:46 pm-7:50 am

1 stop10h 04m

Lambert-St Louis

Wed 1/21

8:22 pm-11:06 pm

Nonstop1h 44m

$106

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 2/18

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Sat 2/21

6:41 pm-7:03 am

1 stop11h 22m

$110

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/5

10:56 pm-10:23 am

1 stop12h 27m

Lambert-St Louis

Mon 2/9

8:22 pm-11:06 pm

Nonstop1h 44m

$111

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Mon 1/19

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Thu 1/22

5:42 pm-5:01 pm

1 stop22h 19m

$112

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, July 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 $197. The month of August is another great option to travel to St. Louis, with average flight prices from Atlanta averaging around $198.

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 $258. 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 $351. 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 $257 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $306 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 $264 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 $212 on momondo.

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

There are 4 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 December 2025, prices for Atlanta to St. Louis flights are approximately 47% 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

$112

Fastest flight time

1h 39m

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 $112. The best round-trip flight deal from Atlanta to St. Louis found on momondo in the last 72 hours is $133.
The fastest flight from Atlanta to St. Louis takes 1h 39m
Direct flights go from Atlanta to St. Louis every day.
There is 1 airport in St. Louis. From Atlanta there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • 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 39m, 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 $79Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
DeltaPriceFrom $177Free CancellationRating
7.9
8,009 reviews
Search Delta flights
SouthwestPriceFrom $188Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

  • Delta Flights From Atlanta to St. Louis

    Across 14 Delta flights from Atlanta to St. Louis this week, the average price was $288, with the best Delta deals starting from $177 round-trip. 8,009 users have rated Delta on momondo, with an average score of 7.9/10.

  • 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 $188, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $302 round-trip. Southwest operates 9 flights out of Atlanta into St. Louis in an average week, so prices vary by time and availability. 4,250 Southwest reviews by users on momondo have scored the airline at 7.9/10.

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
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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