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Cheap flights from Atlanta to St Louis

Compare Atlanta to St Louis flight deals

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Flight deals from Atlanta to St Louis

Looking for a cheap last-minute deal or the best return flight from Atlanta to St Louis? Find the lowest prices on one-way and return tickets right here.
St Louis.P4,216 per passenger.Departing Mon, 9 Mar, returning Wed, 11 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Mon, 9 Mar, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Wed, 11 Mar, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P4,216, select.
St Louis.P6,106 per passenger.Departing Thu, 16 Apr, returning Mon, 20 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Thu, 16 Apr, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Mon, 20 Apr, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P6,106, select.
St Louis.P6,527 per passenger.Departing Wed, 13 May, returning Fri, 15 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Atlanta Hartsfield-Jackson on Wed, 13 May, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 15 May, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P6,527, select.
St Louis.P6,915 per passenger.Departing Sat, 28 Feb, returning Wed, 11 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Sat, 28 Feb, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Wed, 11 Mar, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P6,915, select.
St Louis.P8,238 per passenger.Departing Wed, 25 Feb, returning Sat, 28 Feb.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Wed, 25 Feb, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Sat, 28 Feb, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P8,238, select.
St Louis.P8,555 per passenger.Departing Thu, 4 Jun, returning Mon, 8 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Thu, 4 Jun, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Mon, 8 Jun, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P8,555, select.
St Louis.P8,613 per passenger.Departing Thu, 26 Mar, returning Thu, 2 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Atlanta Hartsfield-Jackson on Thu, 26 Mar, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 2 Apr, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P8,613, select.
St Louis.P9,679 per passenger.Departing Wed, 20 May, returning Mon, 25 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Atlanta Hartsfield-Jackson on Wed, 20 May, arriving in St Louis.Inbound direct flight with Frontier Airlines departs from St Louis on Mon, 25 May, arriving in Atlanta Hartsfield-Jackson.Price includes taxes and charges.From P9,679, select.

Find the cheapest month to fly from Atlanta to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Atlanta to St Louis flights are currently cheapest in March.
Feb
from P8,238
Mar
from P4,216
Apr
from P6,106
May
from P6,527
Jun
from P8,555
Jul
from P11,027
Aug
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Sep
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Oct
from P19,112
Nov
from P19,231
Dec
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Jan
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Direct flights from Atlanta to St Louis

Atlanta to St Louis: Alternative routes

Compare routes from Atlanta to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

St Louis

20km from central St Louis
ClosestCheapest
from P4,216
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Belleville

32km from central St Louis
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Sparta Community

69km from central St Louis
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Atlanta to St Louis: Flight information

The things to know before you go.
Cheapest flight foundP4,216
Cheapest month to flyMarch
Average flight time1 hr, 43 mins
Most popular airlineSouthwest Airlines
Average flights per week295

Finding cheap flights from Atlanta to St Louis: Frequently asked questions

The best price we found for a return flight from Atlanta to St Louis is P4,216. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 43 minutes is the average flight time from Atlanta to St Louis.
Southwest Airlines, KLM and Delta fly direct from Atlanta to St Louis.
As of February 2026, there are 590 flights per week flying from Atlanta to St Louis.
The cheapest month to fly from Atlanta to St Louis is usually March.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Atlanta to St Louis Airport on Monday, 9 March 2026.
Yes – the average flight time is 1 hour and 43 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to St Louis is Frontier Airlines .

Flying from Atlanta to Lambert-St. Louis International Airport (STL): What you need to know

  • Get your trip started at Hartsfield-Jackson Atlanta International Airport (ATL), the main airport in Atlanta. Look for flights from Atlanta to Lambert-St. Louis International Airport (STL) that take off from this terminal.

  • Around 1 hour 45 minutes is how long you can expect to be in the air on a direct Atlanta to Lambert-St. Louis International Airport flight.

  • St Louis is one hour behind Atlanta. Lambert-St. Louis International Airport is located in St Louis, which follows the UTC-5 timezone.

  • With 65 direct flights a week between the two airports, Hartsfield-Jackson Atlanta International Airport (ATL) to Lambert-St. Louis International Airport (STL) is the busiest route. Southwest Airlines operates the earliest flight at 7am. If you'd like to make the most of your day before jetting off, the latest departure from ATL to STL is with Delta Air Lines at 11pm.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Get to the airport on time to board your flight from Atlanta to STL.

  • Travelling during a peak period like public or school holidays? Expect longer lines at check-in and security. To play it safe, arrive up to four hours before international flights and two hours before domestic departures.

Airports in Atlanta

Hartsfield-Jackson Atlanta International Airport (ATL)

  • Take the express route from Hartsfield-Jackson Atlanta International Airport (ATL). Direct flights from Atlanta to Lambert-St. Louis International Airport (STL) are available from here.

  • At ATL, there's a range of carriers that offer direct flights from Atlanta to Lambert-St. Louis International Airport, including:

  • The top choice among passengers flying between ATL and STL is Delta Air Lines.

  • With 79.5% of services landing as planned, Delta Air Lines is the leading performer for punctuality on this route.

  • Travelling from central Atlanta to ATL takes about 1 hour 10 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 18 kilometres in 15 minutes or so, depending on traffic conditions.

  • Searching for a convenient hotel close to Hartsfield-Jackson Atlanta International Airport? If you've booked an early flight from Atlanta to Lambert-St. Louis International Airport, these accommodation options will have you sleeping just around the corner from the terminal:

  • When it comes to the on-time performance of Hartsfield-Jackson Atlanta International Airport, data shows 76.64% of flights complete their journey on time.

  • You'll find ATL at 6000 N Terminal Parkway.

About Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • Lambert-St. Louis International Airport to the centre of St Louis is around 16 kilometres. If you're taking a cab or renting a car, plan in advance to make your trip as smooth as possible. Journey times can vary based on traffic conditions and the time of day.

  • Travelling on public transport takes about 35 minutes.

How to find the cheapest flights from Atlanta to Lambert-St. Louis International Airport (STL)

  • The cheapest price we've found for a one-way ticket from Atlanta to Lambert-St. Louis International Airport is P1,616. For a return flight on this route, the best price is P4,216. Depending on when you want to go and the availability, these fares can change.

  • Don't wait until the last moment. You're more likely to find cheap flights from Atlanta to STL if you book ahead. Airlines often offer some great early bird deals.

  • Affordable Atlanta to Lambert-St. Louis International Airport tickets are easier to find if your travel dates are flexible. Try using the 'Whole month' tool to compare fares across every month and then pick the cheapest day.

  • Never miss a deal on plane tickets from Atlanta to STL by setting up a Price Alert. We'll send you an email or notification through the app when a lower fare becomes available.

  • Uncover a great deal on a flight from Atlanta to Lambert-St. Louis International Airport with the help of the filters. Choose your preferred arrival and departure times, airlines and number of stops. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Atlanta to Lambert-St. Louis International Airport (STL)

  • It's time to figure out your travel dates for your flight from Atlanta to Lambert-St. Louis International Airport (STL). July is when most people visit St Louis. If a slower pace sounds more appealing, head there in April.

  • Before locking in your Atlanta to STL plane ticket, consider the type of weather you enjoy. July is the warmest month in St Louis, with temperatures ranging from 17ºC (63ºF) to 33ºC (91ºF).

  • January has temperatures of between -8ºC (18ºF) and 7ºC (45ºF). Look for cheap tickets from Atlanta to Lambert-St. Louis International Airport around that time if you want to travel when it's cooler.

More about St Louis

Explore more of the United States

  • You've done St Louis, now it's time to discover other corners of the United States. Journey around 257 kilometres east to Evansville to check off its top attractions. From Mesker Park Zoo to Riverfront Park and Evansville Zoological Society, there's plenty to keep you busy.

  • Around 177 kilometres west of St Louis, Columbia is another favourite stop in the United States. Experience this destination's highlights firsthand at Sentinel Park, Museum of Art and Archaeology and Bur Oak Brewing Company.

Plan the rest of your trip from Atlanta to St Louis

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.