Cheap Flights from St. Louis to Atlanta from $19

Frequently Asked Questions

• What are the cheapest flights from St. Louis to Atlanta (STL-ATL)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $19 on Cheapest nonstop routes (e.g. STL to ATL on Wed, Oct 21), while Frontier Airlines offers Cheapest nonstop round-trips from $39 departing on Wed, Oct 14 and returning on Wed, Oct 21.

• Which airlines offer direct flights from St. Louis to Atlanta?

  At the moment, you can catch a nonstop flight from St. Louis to Atlanta with the following airlines, including: Delta Air Lines Frontier Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from St. Louis (STL) to Atlanta (ATL) and what is the distance?

  It takes around 1 hour 35 minutes to fly from St. Louis (STL) to Atlanta (ATL).

• When is the best time to book flights from St. Louis to Atlanta?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to Atlanta is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from St. Louis to Atlanta?

  Based on Trip.com data in the past 4 weeks, there is 67 flight per week flying from St. Louis to Atlanta. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL1524 (06:04)

• How can I find the best deals on flights from St. Louis to Atlanta?

  To find best deals on flights from St. Louis to Atlanta, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Oct 21, with one-way flights priced at just $19.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Atlanta travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from St. Louis (STL) to Atlanta (ATL) the cheapest?

  The cheapest months to fly from St. Louis to Atlanta is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from St. Louis to Atlanta on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from St. Louis to Atlanta on October 14, 2026 with Frontier Airlines, with prices starting at $39.

• Which airports can I fly into Atlanta from St. Louis?

  You can arrive at any of the following airports in Atlanta: Hartsfield–Jackson Atlanta International Airport (ATL), and DeKalb-Peachtree Airport (PDK). Flights from St. Louis Lambert International Airport to Hartsfield–Jackson Atlanta International Airport (STL-ATL) are by far the most popular option for this route.

• Is there any time difference between St. Louis and Atlanta?

  The time difference between Atlanta and St. Louis is 1h.

• How do I change or cancel my ticket from St. Louis to Atlanta?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from St. Louis to Atlanta?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from St. Louis to Atlanta is $161. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from St. Louis to Atlanta?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from St. Louis to Atlanta is $243. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from St. Louis to Atlanta on Trip.com?

  Enter St. Louis and Atlanta, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the St. Louis to Atlanta route?

  Frontier Airlinesare the most popular budget airlines flying from St. Louis to Atlanta. Check baggage, seat and payment fees before comparing the final price.