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$27+ Cheap flights from Atlanta to St. Louis (ATL - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — STL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Lambert-St Louis are usually found in July or August, booked 87 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Atlanta to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Atlanta (ATL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 15, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$58
(Frontier)

One-way from

$27
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$267

Good round-trip deal

$192 or less

Good one-way deal

$151 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Lambert-St Louis flights.
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From Atlanta Hartsfield-Jackson to Lambert-St Louis
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One-way flight from Atlanta Hartsfield-Jackson to Lambert-St Louis
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Highest demand for flights based on searches. 15% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Atlanta Hartsfield-Jackson to Lambert-St Louis.
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Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Lambert-St Louis.
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Find flight deals from Atlanta to St. Louis

Cheapest flights from Atlanta to St. Louis
Explore the most affordable flight options available from Atlanta to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Frontier deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Wed 2/258:17 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/14$63
This Frontier deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Mon 2/98:22 pm
STL
-
ATL
Nonstop1h 44m
Frontier
Deal found 1/15$68
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Mon 2/238:22 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/13$69
This Super.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/266:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Fri 1/308:22 pm
STL
-
ATL
Nonstop1h 44m
Frontier
Deal found 1/14$79
This Cheapflightsfares deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/236:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Mon 1/268:22 pm
STL
-
ATL
Nonstop1h 44m
Frontier
Deal found 1/15$80
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Wed 2/188:17 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/14$82
This Frontier deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Fri 2/138:20 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/14$87
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:51 pm
ATL
-
STL
1 stop26h 08m
Frontier
Sat 2/218:17 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/13$93
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Fri 2/138:20 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/13$94
This Expedia deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/48:49 pm
ATL
-
STL
1 stop25h 17m
Frontier
Wed 2/118:17 pm
STL
-
ATL
Nonstop1h 40m
Frontier
Deal found 1/14$97
This Cheapflightsfares deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:00 am
ATL
-
STL
Nonstop1h 51m
Frontier
Tue 2/243:49 pm
STL
-
ATL
1 stop19h 33m
Frontier
Deal found 1/14$98

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from Atlanta to St. Louis that are best for you.

Fly from

Atlanta

Fly to

St. Louis

Route

Depart

Return

Price

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/13

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Mon 2/16

8:22 pm-11:02 pm

Nonstop1h 40m

$102

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/13

9:36 pm-11:59 pm

2 stops27h 23m

Lambert-St Louis

Wed 2/18

8:17 pm-10:57 pm

Nonstop1h 40m

$143

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 2/24

2:08 pm-2:47 pm

Nonstop1h 39m

Lambert-St Louis

Thu 2/26

7:10 am-9:55 am

Nonstop1h 45m

$196

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Sat 2/14

3:16 pm-3:56 pm

Nonstop1h 40m

Lambert-St Louis

Tue 2/17

5:00 pm-7:44 pm

Nonstop1h 44m

$196

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 2/17

3:25 pm-7:30 pm

1 stop5h 05m

Lambert-St Louis

Wed 2/18

8:20 am-3:05 pm

2 stops5h 45m

$202

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/20

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Sun 2/22

3:49 pm-2:07 pm

2 stops21h 18m

$204

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 2/24

10:55 pm-11:36 pm

Nonstop1h 41m

Lambert-St Louis

Sat 2/28

5:01 pm-7:45 pm

Nonstop1h 44m

$206

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/20

8:35 pm-9:25 pm

Nonstop1h 50m

Lambert-St Louis

Tue 2/24

8:15 am-10:50 am

Nonstop1h 35m

$207

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 2/20

7:59 pm-8:41 pm

Nonstop1h 42m

Lambert-St Louis

Tue 2/24

10:13 am-12:49 pm

Nonstop1h 36m

$207

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/12

2:08 pm-2:47 pm

Nonstop1h 39m

Lambert-St Louis

Thu 2/19

7:10 am-9:55 am

Nonstop1h 45m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 23 results
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Compare providers for flights from Atlanta to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Atlanta to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Atlanta-St. Louis flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Atlanta-St. Louis flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Atlanta-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Atlanta-St. Louis flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Atlanta-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Atlanta to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Atlanta with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Atlanta to St. Louis

How far ahead should I book a flight from Atlanta to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Atlanta to St. Louis. Price data was last updated on January 9, 2026.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Atlanta to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Atlanta to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Atlanta to St. Louis (average of $37). Flying from Atlanta to St. Louis in March is currently the most expensive (average of $244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATL to STL?

Find hourly flight availability from Atlanta to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 15, 2026.

One of the essential ways to save on airfare from Atlanta to St. Louis is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 16% on airfare.

What is the cheapest day to fly from Atlanta to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Atlanta to St. Louis. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their Atlanta to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Atlanta to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Atlanta to St. Louis trip
Airports
ATL

For a quicker security experience at ATL, try the South security area, often faster than the main one.

Read more about ATLBy Chris Dong
STL

Use the MetroLink for a convenient and economical ride from STL to downtown St. Louis in about 40 minutes.

Read more about STLBy Taryn White
Our travel experts
Chris Dong

Chris Dong

Expert on ATL

Chris Dong

Chris Dong

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 15, 2026.
Read through reviews of airlines operating flights from Atlanta to St. Louis, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,049 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,132 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,057 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Atlanta to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Atlanta to St. Louis?

    If you book a flight from Atlanta to St. Louis, you will be flying from Hartsfield-Jackson to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Atlanta Hartsfield-Jackson (ATL) take 1h 39m for a nonstop flight. There are 20 flights from Hartsfield-Jackson to St. Louis per day from 4 airlines.

  • How popular is this Atlanta to St. Louis flight route?

    This flight path from Atlanta Hartsfield-Jackson to Lambert-St Louis was viewed by 42 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Atlanta to St. Louis?

    There are many flights that can get you from Atlanta to St. Louis in 1h 39m. Fly via Frontier, Delta, or Southwest to get the fastest option. Atlanta and St. Louis are separated by a distance of 484 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Atlanta to St. Louis round-trip?

    Currently priced at $61, Frontier will fly you from Atlanta to St. Louis and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $133 and $167, respectively. Users have found that Frontier is 74% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Atlanta to St. Louis one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $39. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from Atlanta to St. Louis for a low price.

  • What are the most reliable airlines from Atlanta to St. Louis?

    No one likes to see their flight delayed. When booking a flight from Atlanta to St. Louis consider choosing Frontier (82%), Delta (80%) or KLM (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Atlanta to St. Louis?

    The cheapest flight price from Atlanta to St. Louis is $39. On average you can expect to pay $240. The most popular route, (Atlanta Hartsfield-Jackson - Lambert-St Louis), can usually be booked for $97.

  • Can I find deals for flights from Atlanta to St. Louis that include hotel bookings?

    Yes. In addition to deals on Atlanta to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Atlanta to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Atlanta to St. Louis.

  • Can I find deals for business class flights from Atlanta to St. Louis?

    Yes. Cheapflights offers flight deals from Atlanta to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Atlanta to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Atlanta to St. Louis (average of $37). Flying from Atlanta to St. Louis in March is currently the most expensive (average of $244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Atlanta to St. Louis

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Top 4 airlines flying from Atlanta to St. Louis

Discover the top 4 airlines that operate flights from Atlanta to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$157FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$133Average$274FlexibilityNo cancel feeOn-time71%
DeltaCheapest$167Average$277FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$188Average$301FlexibilityNo cancel feeOn-time63%

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