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Cheap flights from St. Louis to Atlanta from $18

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Atlanta departing on 2/25. 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 St. Louis to Atlanta

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:32 pm - 11:16 pm
STL
-
ATL
1h 44mnonstop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$76Frontier
Fri, Jan 16 - Sat, Jan 24
Frontier Logo
8:32 pm - 11:16 pm
STL
-
ATL
1h 44mnonstop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$77Frontier
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
3:43 pm - 6:28 pm
STL
-
ATL
1h 45mnonstop
Frontier Logo
1:56 pm - 2:48 pm
ATL
-
STL
1h 52mnonstop
$78Frontier
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
8:22 pm - 11:06 pm
STL
-
ATL
1h 44mnonstop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$87Frontier
Fri, Jan 30 - Mon, Feb 2
Frontier Logo
8:32 pm - 11:16 pm
STL
-
ATL
1h 44mnonstop
Frontier Logo
1:00 pm - 11:33 pm
ATL
-
STL
11h 33m1 stop
$93Frontier
Wed, Jan 14 - Wed, Jan 21
Frontier Logo
10:42 am - 1:27 pm
STL
-
ATL
1h 45mnonstop
Frontier Logo
8:55 am - 9:47 am
ATL
-
STL
1h 52mnonstop
$94Frontier
Fri, Feb 20 - Sun, Feb 22
Frontier Logo
11:00 am - 5:48 pm
STL
-
ATL
5h 48m1 stop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$95Frontier
Sat, Jan 24 - Mon, Jan 26
Frontier Logo
5:42 pm - 7:58 am
STL
-
ATL
13h 16m1 stop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$96Frontier
Tue, Jan 20 - Sat, Jan 24
Frontier Logo
8:22 pm - 11:06 pm
STL
-
ATL
1h 44mnonstop
Frontier Logo
8:04 pm - 12:50 pm
ATL
-
STL
17h 46m1 stop
$99Frontier
Wed, Jan 21 - Sun, Jan 25
Frontier Logo
5:11 pm - 7:58 am
STL
-
ATL
13h 47m1 stop
Frontier Logo
6:00 am - 6:51 am
ATL
-
STL
1h 51mnonstop
$100Frontier
Mon, Jan 12 - Sat, Jan 24

Frontier flights from St. Louis to Atlanta

Our best Frontier deals on St. Louis to Atlanta flight tickets
Frontier
Jan 16
STL8:32 pmLambert-St Louis
1h 44m
ATL11:16 pmAtlanta Hartsfield-Jackson
Jan 24
ATL6:00 amAtlanta Hartsfield-Jackson
1h 51m
STL6:51 amLambert-St Louis
$76
Find similar
Frontier
Jan 16
STL8:32 pmLambert-St Louis
1h 44m
ATL11:16 pmAtlanta Hartsfield-Jackson
Jan 19
ATL6:00 amAtlanta Hartsfield-Jackson
1h 51m
STL6:51 amLambert-St Louis
$77
Find similar
Frontier
Jan 8
STL3:43 pmLambert-St Louis
1h 45m
ATL6:28 pmAtlanta Hartsfield-Jackson
Jan 11
ATL1:56 pmAtlanta Hartsfield-Jackson
1h 52m
STL2:48 pmLambert-St Louis
$78
Find similar

Southwest flights from St. Louis to Atlanta

Our best Southwest deals on St. Louis to Atlanta flight tickets
Southwest
Dec 28
STL6:50 pmLambert-St Louis
1h 30m
ATL9:20 pmAtlanta Hartsfield-Jackson
Jan 18
ATL12:00 pmAtlanta Hartsfield-Jackson
1h 45m
STL12:45 pmLambert-St Louis
$373
Find similar
Southwest
Dec 29
STL6:50 pmLambert-St Louis
1h 30m
ATL9:20 pmAtlanta Hartsfield-Jackson
Dec 30
ATL10:50 amAtlanta Hartsfield-Jackson
1h 50m
STL11:40 amLambert-St Louis
$406
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Atlanta 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 15, 2025.
Use the filters below to find and compare flights from St. Louis to Atlanta that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Fri 1/16

8:32 pm-11:16 pm

Nonstop1h 44m

Atlanta Hartsfield-Jackson

Sat 1/24

6:00 am-6:51 am

Nonstop1h 51m

$76

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Fri 1/16

8:32 pm-11:16 pm

Nonstop1h 44m

Atlanta Hartsfield-Jackson

Mon 1/19

6:00 am-6:51 am

Nonstop1h 51m

$77

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Thu 1/8

3:43 pm-6:28 pm

Nonstop1h 45m

Atlanta Hartsfield-Jackson

Sun 1/11

1:56 pm-2:48 pm

Nonstop1h 52m

$78

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Fri 1/30

8:22 pm-11:06 pm

Nonstop1h 44m

Atlanta Hartsfield-Jackson

Mon 2/2

6:00 am-6:51 am

Nonstop1h 51m

$87

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Wed 1/14

8:32 pm-11:16 pm

Nonstop1h 44m

Atlanta Hartsfield-Jackson

Wed 1/21

1:00 pm-11:33 pm

1 stop11h 33m

$93

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Fri 2/20

10:42 am-1:27 pm

Nonstop1h 45m

Atlanta Hartsfield-Jackson

Sun 2/22

8:55 am-9:47 am

Nonstop1h 52m

$94

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Sat 1/24

11:00 am-5:48 pm

1 stop5h 48m

Atlanta Hartsfield-Jackson

Mon 1/26

6:00 am-6:51 am

Nonstop1h 51m

$95

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Tue 1/20

5:42 pm-7:58 am

1 stop13h 16m

Atlanta Hartsfield-Jackson

Sat 1/24

6:00 am-6:51 am

Nonstop1h 51m

$96

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Wed 1/21

8:22 pm-11:06 pm

Nonstop1h 44m

Atlanta Hartsfield-Jackson

Sun 1/25

8:04 pm-12:50 pm

1 stop17h 46m

$99

St. LouisAtlanta

STL - ATL

STLATL

Lambert-St Louis

Mon 1/12

5:11 pm-7:58 am

1 stop13h 47m

Atlanta Hartsfield-Jackson

Sat 1/24

6:00 am-6:51 am

Nonstop1h 51m

$100

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 Atlanta from

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

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 Atlanta?

The month of July is, on average, the cheapest month to fly to Atlanta from St. Louis, with most prices found around $207. If you aren’t able to travel to Atlanta during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $222.

What is the cheapest day to depart on your flight to Atlanta?

Our data shows that Thursday is the least expensive day to fly to Atlanta. Tickets to fly out on this day can be as low as $393. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Atlanta on Wednesday is $574.

What is the cheapest time of day to depart on your flight to Atlanta?

The cheapest time of day to fly to Atlanta is in the morning when flights can be purchased for as low as $472. Flights to Atlanta are more costly in the afternoon, with an average ticket price of $619. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Atlanta?

You are more likely to see cheaper flights to Atlanta from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Atlanta for around $273 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Atlanta from St. Louis for as low as $226 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to Atlanta Hartsfield-Jackson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of December 2025, prices for St. Louis to Atlanta flights are approximately 46% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Atlanta

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

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

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

Best Price Found

$143

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Atlanta

1 airport
The best one-way flight to Atlanta from St. Louis in the past 72 hours is $143. The best round-trip flight deal from St. Louis to Atlanta found on momondo in the last 72 hours is $249.
The fastest flight from St. Louis to Atlanta takes 1h 30m
Direct flights go from St. Louis to Atlanta every day.
There is 1 airport in Atlanta. From St. Louis there are direct flights to Atlanta Hartsfield-Jackson (ATL).
Search flight deals

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

    A flight from Lambert-St Louis to Atlanta Hartsfield-Jackson will travel around 466.6 mi. Typically, this will take 1h 30m by plane in normal conditions.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Atlanta Hartsfield-Jackson Airport.

  • What documentation or ID do you need to fly to Atlanta Hartsfield-Jackson Airport?

    The travel and health documents required for your trip to Atlanta Hartsfield-Jackson 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 Atlanta Hartsfield-Jackson 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 St. Louis to Atlanta?

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

Best airlines flying from St. Louis to Atlanta

Compare and see reviews for airlines that fly from St. Louis to Atlanta with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $74Free CancellationRating
5.8
3,080 reviews
Search Frontier flights
DeltaPriceFrom $184Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $188Free CancellationRating
7.9
4,249 reviews
Search Southwest flights
American AirlinesPriceFrom $206Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights

  • Delta Flights From St. Louis to Atlanta

    Delta operates around 21 flights from St. Louis to Atlanta every week. The average price of these flights found in the last 72 hours has been $311, but momondo users have found Delta deals from St. Louis to Atlanta from as low as $184 round-trip. Delta has been scored 7.9/10 in 8,008 reviews.

  • Southwest Flights From St. Louis to Atlanta

    Across 4,249 Southwest reviews on momondo, the average score is 7.9/10. Southwest flies from St. Louis to Atlanta about 17 times each week, with ticket deals ranging from $188 to $307. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Atlanta?

Book flights to Atlanta if you plan to visit one of these locations
Helen
Marietta
McDonough
Duluth
Blue Ridge
Warner Robins
Lawrenceville
Stone Mountain
Dahlonega
Cartersville
Covington
Norcross
Auburn
Gadsden
Conyers
Newnan
Kennesaw
La Grange
Lithonia
Gainesville

Why use momondo?

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

Finding the right flight to Atlanta from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Atlanta quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to Atlanta from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of St. Louis to Atlanta flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Atlanta trip

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