Cheap Flights from Atlanta to St. Louis from $29

Frequently Asked Questions

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

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $29 on Cheapest nonstop routes (e.g. ATL to STL on Fri, Sep 4), while Frontier Airlines offers Cheapest nonstop round-trips from $39 departing on Mon, Sep 14 and returning on Mon, Sep 21.

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

  At the moment, you can catch a nonstop flight from Atlanta to St. Louis with the following airlines, including: Frontier Airlines Delta Air Lines 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 Atlanta (ATL) to St. Louis (STL) and what is the distance?

  It takes around 1 hour 41 minutes to fly from Atlanta (ATL) to St. Louis (STL).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Atlanta to St. Louis 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 Atlanta to St. Louis?

  Based on Trip.com data in the past 4 weeks, there is 69 flight per week flying from Atlanta to St. Louis. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL1400 (09:04)

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

  To find best deals on flights from Atlanta to St. Louis, 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 Fri, Sep 4, with one-way flights priced at just $29.
  · 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 St. Louis travel is around July.
  · Get exclusive promo codes for Trip.com app users.

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

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

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

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Atlanta to St. Louis on August 24, 2026 with Frontier Airlines, with prices starting at $30.

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

  You can land at any one of the following hubs in St. Louis, with Hartsfield–Jackson Atlanta International Airport to St. Louis Lambert International Airport (ATL-STL) is by far the most common option on this route: St. Louis Lambert International Airport (STL) St. Louis Downtown Airport (CPS).

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

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

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

  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 Atlanta to St. Louis?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Atlanta to St. Louis is $135. Fares vary by travel date, airline and availability.

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

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Atlanta to St. Louis is $166. The final price depends on the outbound and return dates, airline and fare conditions.

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

  Enter Atlanta and St. Louis, 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 Atlanta to St. Louis route?

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