What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Lambert-St Louis?

Frontier and Delta are the most popular carriers operating from Atlanta Hartsfield-Jackson to Lambert-St Louis

How many flights depart from Atlanta to St. Louis on average per day?

The number of flights available between Atlanta and St. Louis is 28 per day as of December 2025. The most frequent departure time is 3:00PM, with 40% of daily flights leaving in the afternoon.

How many flights depart from Atlanta to St. Louis on average per week?

The number of flights available between Atlanta and St. Louis is 201 per week as of December 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

What airlines fly to St. Louis?

Delta, Frontier and Southwest are the top three most popular airlines that fly to St. Louis from Atlanta according to our data. Delta is the first choice among our users, with 42% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 4 operators available to choose from 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.

$47 Cheap Flights from Atlanta to St. Louis in 2025/26

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1:56 pm - 2:48 pm

ATL

STL

1h 52mnonstop

8:32 pm - 11:16 pm

STL

ATL

1h 44mnonstop

$93Frontier

Fri, Jan 9 - Fri, Jan 16

8:55 am - 9:47 am

ATL

STL

1h 52mnonstop

5:44 pm - 5:57 am

STL

ATL

11h 13m1 stop

$94Frontier

Thu, Feb 19 - Mon, Feb 23

8:55 am - 9:40 am

ATL

STL

1h 45mnonstop

3:43 pm - 6:28 pm

STL

ATL

1h 45mnonstop

$100Frontier

Sun, Dec 21 - Thu, Jan 8

1:56 pm - 2:48 pm

ATL

STL

1h 52mnonstop

5:11 pm - 7:58 am

STL

ATL

13h 47m1 stop

$109Frontier

Fri, Jan 9 - Mon, Jan 12

6:00 am - 6:51 am

ATL

STL

1h 51mnonstop

8:59 am - 5:01 pm

STL

ATL

7h 02m1 stop

$110Frontier

Fri, Feb 6 - Sun, Feb 8

4:13 pm - 11:33 pm

ATL

STL

8h 20m1 stop

8:22 pm - 11:06 pm

STL

ATL

1h 44mnonstop

$111Frontier

Thu, Feb 5 - Mon, Feb 9

10:50 pm - 10:33 pm

ATL

STL

24h 43m1 stop

3:43 pm - 6:28 pm

STL

ATL

1h 45mnonstop

$112Frontier

Mon, Jan 5 - Thu, Jan 8

10:46 pm - 10:33 pm

ATL

STL

24h 47m1 stop

8:32 pm - 11:16 pm

STL

ATL

1h 44mnonstop

$113Frontier

Wed, Jan 7 - Wed, Jan 14

6:00 am - 10:34 pm

ATL

STL

17h 34m1 stop

8:32 pm - 11:16 pm

STL

ATL

1h 44mnonstop

$115Multiple Airlines

Fri, Jan 16 - Mon, Jan 19

8:55 am - 9:40 am

ATL

STL

1h 45mnonstop

3:43 pm - 6:28 pm

STL

ATL

1h 45mnonstop

$116Frontier

Sun, Dec 21 - Fri, Jan 9

Frontier flights from Atlanta to St. Louis

Our best Frontier deals on Atlanta to St. Louis flight tickets

Frontier

Dec 18

ATL8:55 amAtlanta Hartsfield-Jackson

1h 45m

STL9:40 amLambert-St Louis

Jan 8

STL3:43 pmLambert-St Louis

1h 45m

ATL6:28 pmAtlanta Hartsfield-Jackson

$90

Find similar

Frontier

Jan 9

ATL1:56 pmAtlanta Hartsfield-Jackson

1h 52m

STL2:48 pmLambert-St Louis

Jan 16

STL8:32 pmLambert-St Louis

1h 44m

ATL11:16 pmAtlanta Hartsfield-Jackson

$93

Find similar

Frontier

Feb 19

ATL8:55 amAtlanta Hartsfield-Jackson

1h 52m

STL9:47 amLambert-St Louis

Feb 23

STL5:44 pmLambert-St Louis

11h 13m

1 stop

ATL5:57 amAtlanta Hartsfield-Jackson

$94

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 1/9

1:56 pm-2:48 pm

Nonstop1h 52m

Lambert-St Louis

Fri 1/16

8:32 pm-11:16 pm

Nonstop1h 44m

$93

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/19

8:55 am-9:47 am

Nonstop1h 52m

Lambert-St Louis

Mon 2/23

5:44 pm-5:57 am

1 stop11h 13m

$94

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sun 12/21

8:55 am-9:40 am

Nonstop1h 45m

Lambert-St Louis

Thu 1/8

3:43 pm-6:28 pm

Nonstop1h 45m

$100

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 1/9

1:56 pm-2:48 pm

Nonstop1h 52m

Lambert-St Louis

Mon 1/12

5:11 pm-7:58 am

1 stop13h 47m

$109

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/6

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Sun 2/8

8:59 am-5:01 pm

1 stop7h 02m

$110

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/5

4:13 pm-11:33 pm

1 stop8h 20m

Lambert-St Louis

Mon 2/9

8:22 pm-11:06 pm

Nonstop1h 44m

$111

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Mon 1/5

10:50 pm-10:33 pm

1 stop24h 43m

Lambert-St Louis

Thu 1/8

3:43 pm-6:28 pm

Nonstop1h 45m

$112

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 1/7

10:46 pm-10:33 pm

1 stop24h 47m

Lambert-St Louis

Wed 1/14

8:32 pm-11:16 pm

Nonstop1h 44m

$113

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 1/16

6:00 am-10:34 pm

1 stop17h 34m

Lambert-St Louis

Mon 1/19

8:32 pm-11:16 pm

Nonstop1h 44m

$115

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sun 12/21

8:55 am-9:40 am

Nonstop1h 45m

Lambert-St Louis

Fri 1/9

3:43 pm-6:28 pm

Nonstop1h 45m

$116

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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

Prices

Airlines

Other information

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 $260. 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 $357. 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 $258 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 38m
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 $141.

The fastest flight from Atlanta to St. Louis takes 1h 38m

Direct flights go from Atlanta to St. Louis every day.

There is 1 airport near St. Louis: 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 38m, 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?
As of December 2025, there are 4 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Atlanta to St. Louis is Boeing 737-900, representing 21.03% of all bookings. The subsequent popular models are Boeing 737-700 Passenger/BBJ1 (winglets) at 17.81%, Airbus A321neo at 11.74%, and Airbus A320-100/200 at 10.58%.
What is the most popular airline from Atlanta to St. Louis?
Based on momondo bookings for flights between Atlanta and St. Louis, the leading airline is Delta, making up 40% of the total bookings. Other popular airlines include Frontier with 31%, Southwest with 28%, and American Airlines with 1%.

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
Frontier	PriceFrom $80	Free Cancellation	Rating 5.8 3,085 reviews	Search Frontier flights
American Airlines	PriceFrom $133	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Delta	PriceFrom $177	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
Southwest	PriceFrom $189	Free Cancellation	Rating 7.9 4,252 reviews	Search Southwest flights

Delta Flights From Atlanta to St. Louis
Across 30 Delta flights from Atlanta to St. Louis this week, the average price was $290, with the best Delta deals starting from $177 round-trip. 8,007 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 $189, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $309 round-trip. Southwest operates 12 flights out of Atlanta into St. Louis in an average week, so prices vary by time and availability. 4,252 Southwest reviews by users on momondo have scored the airline at 7.9/10.

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

O'Fallon

Florissant

Fenton

Wentzville

St. Peters

Collinsville

Alton

Farmington

Festus

Clayton

Glencoe

Edwardsville

Eureka

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.

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Cheap flights from Atlanta to St. Louis from $47

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 1/11. 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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How to get the cheapest flight ticket from Atlanta to St. Louis

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

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

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

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?

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.

What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Lambert-St Louis?

Frontier and Delta are the most popular carriers operating from Atlanta Hartsfield-Jackson to Lambert-St Louis

What airlines fly to St. Louis?

How many flights depart from Atlanta to St. Louis on average per day?

The number of flights available between Atlanta and St. Louis is 28 per day as of December 2025. The most frequent departure time is 3:00PM, with 40% of daily flights leaving in the afternoon.

How many flights depart from Atlanta to St. Louis on average per week?

The number of flights available between Atlanta and St. Louis is 201 per week as of December 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

When to book flights from Atlanta to St. Louis

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

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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?

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

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

Delta Flights From Atlanta to St. Louis

Southwest Flights From Atlanta to St. Louis

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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