Is 40 minutes enough for a layover in Atlanta?

40 minutes is almost never enough time for a layover in Atlanta. Even if you arrive right on time, and your next flight is one gate over from your incoming flight, the Atlanta airport's ability to transfer baggage from one plane to another very often exceeds 40 minutes.



No, 40 minutes is almost certainly not enough for a layover in Atlanta’s Hartsfield-Jackson Airport (ATL), and it is highly inadvisable to book such a ticket.

Here’s a detailed breakdown of why it’s a major risk:

1. Atlanta Airport is Massive

ATL is the world’s busiest airport by passenger traffic. It consists of two massive terminals (North and South) connected by a long underground plane train, with seven concourses (A, B, C, D, E, F, T) arranged in a line. Your arrival and departure gates could be at opposite ends, requiring a 15-20+ minute commute just on the train and moving walkways.

2. The “Minimum Connection Time” (MCT)

Airlines and booking systems have a calculated MCT for each airport. For domestic-to-domestic flights at ATL, the standard MCT is typically 35-40 minutes. Your 40-minute layover is at the absolute bare minimum. Airlines sell these tickets because, in a perfect scenario, it’s technically possible. However, it provides zero buffer for any delay.

3. Critical Factors That Will Likely Cause You to Miss Your Flight

  • Gate Arrival Delay: Even a 10-minute late arrival destroys your chances.
  • Arrival at a Remote Concourse: If your first flight arrives at the far ends (Concourse E or F), you have a very long train ride ahead.
  • Terminal Change: If you arrive in the Domestic Terminal and your next flight is in the International Terminal (Concourse F or E gates used for some domestic

People Also Ask

The recommended layover time for international flights is generally longer, as you will have to go through customs and immigration before boarding your next flight. In most cases, a 30-minute layover for domestic flights and an hour for international flights is considered a minimum, or short, layover.

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The bus ride between the terminals takes about 15 minutes. In addition, the International Terminal Connector provides service between the International Terminal and the Car Rental Center and runs approximately every 15 minutes.

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Delta Air Lines occupies the South Terminal with its own curbside check-in and baggage claim area. Other domestic airlines, such as Southwest Airlines, United Airlines, Spirit Airlines, Alaska Airlines, and JetBlue Airways, operate out of the North Terminal with a baggage claim area and check-in facilities.

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If your itinerary was purchased as one ticket (as in: you have only one itinerary and one confirmation number), and the connection time was too short and you miss the second (or third) flight, you can rest easy, no matter what happens. The airline will simply put you onto the next available flight, free of charge.

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It varies. They will often wait a little while, especially if it's the last flight of the day and even moreso if there are multiple passengers making the same connection. I've had Delta wait for me after inbound connection delays on several occasions.

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Recommended minimum connection times
Delta: 30-minute minimum connection time. Southwest: At least 30 minutes if you have checked bags.

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The short answer (based on my own personal experience) is that the minimum connection time for domestic flights in Atlanta is 35 minutes. It doesn't matter what terminal you arrive at and what terminal you're departing from. 35 minutes is doable. Anything less than that, not so much.

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Domestic flights - Yes. Keep in mind you will have to go through security again, which may cause you to miss your flight depending on how long your layover is.

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Current Average TSA Wait Time at ATL
This average wait time is based on the current time (Pacific Standard Time). Please expect to wait up to at least (13 mins) on average to go through security checkpoints at ATL.

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Why is Atlanta the busiest airport in the world? One reason is its role as a top gateway to Florida. In fact, Atlanta's single busiest market ranked by seat capacity is Orlando, which also happens to be one of the busiest routes in the US.

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Hartsfield–Jackson Atlanta International Airport has two terminals and seven concourses with a total of 192 gates. The Domestic Terminal is located on the west side of the airport and the Maynard H. Jackson Jr. International Terminal is on the east side of the airport.

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But many travel advisers say those guidelines result in itineraries that don't always work for passengers. “On average, 35 minutes is what they consider a legal connection,” said Loulu Lima founder of the Texas-based travel agency Book Here Give Here.

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A 30 minute layover is not advisable unless the second flight is the same aircraft continuing onto it's next destination, such as KLM from Amsterdam to Manila with a stop in Taiwan. Passengers disembark and follow a route through the terminal just to re board the same aircraft.

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Overall, ATL's functional layout and clear signage mean it's a relatively easy airport to navigate. As long as you're aware of which terminal you're departing from, or that you have the ability to pass through the alternative terminal, navigating ATL can be a breeze.

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Transfer between terminals
Both terminals and concourses are connected to each other via Sky Train, also known as Plane Train. There is also a free shuttle that runs between both terminals 24/7, every 15 minutes.

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