Cheap flights from St. Louis to Atlanta from $19

The month of August is, on average, the cheapest month to fly to Atlanta from St. Louis, with most prices found around $166. If you aren’t able to travel to Atlanta during the month of August, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $177.

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 $346. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Atlanta on Monday is $531.

The cheapest time of day to fly to Atlanta is in the afternoon when flights can be purchased for as low as $364. Flights to Atlanta are more costly at noon, with an average ticket price of $647. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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 $216 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 $128 on momondo.

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

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

Frontier, Delta and Southwest are the top three most popular airlines that fly to Atlanta from St. Louis according to our data. Frontier is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Atlanta. Keep in mind that there are 4 different airlines that fly to Atlanta on a routine basis, so you have a few additional options to choose from.

20 flights are operational daily from St. Louis to Atlanta as of September 2026. The most popular departure time for this route is 3:00PM, with 56% of flights per day taking off in the afternoon.

As of September 2026, there are 144 flights per week flying from St. Louis to Atlanta. The most common day of the week flights depart is Wed, with 27% of flights taking off on this day.