Be at ATL two hours before a domestic departure and three before an international one. That still doesn’t tell you what time to leave the house, so put in your departure time and adjust the drive, parking and bags.
Every row is editable. Tap the departure or any duration and the plan recomputes backward. The first travel row is your leave-by time.
Until you know your gate, budget for the longer walk. A far gate at ATL adds a ride before the walk.
The 25-minute drive is a typical run from Atlanta without traffic. In the app, set Hartsfield-Jackson Atlanta International as the destination and Apple Maps fills in the time from where you’re leaving.
Still check traffic for the hour you’ll go (real drive to ATL). Change the row and every step before it moves.
A maps app covers the drive to ATL. Bag drop, security, and the walk to your gate usually take longer, and they are the steps people misjudge.
Here is the same plan drawn to scale. The first block is travel; the next two are the airport. A checked bag grows one, a far gate grows the other.
Front door to boarding: 2hr 45min
Two hours domestic, three international
Ahead of your departure time
At an airport this size, treat those as a floor. They assume a normal day, not a holiday crush or a long security line.
ATL is the busiest airport in the world, and it behaves like it: Monday mornings, Sunday evenings, and holiday weeks can double a normal checkpoint line. Concourse T hangs off the domestic terminal and everything else is a Plane Train ride away, so the gate letter tells you how much airport is still ahead of you.
The main domestic checkpoint funnels an enormous volume of passengers, and once you're through, the concourses are connected by the Plane Train. Budget the ride to a far concourse on top of the wait. Concourse F has its own checkpoint at the international terminal, so those departures never join the main domestic line.
The plan allows 30 minutes for a standard lane on a busy but normal morning. With TSA PreCheck, that drops to 15 minutes. A checked bag lengthens the one before it.
MARTA's Red and Gold lines run straight into the domestic terminal, which sidesteps Atlanta traffic entirely. If you're flying international, note that the international terminal is on the opposite side of the airfield with its own road access and parking. The MARTA station sits between the domestic terminal's north and south halves, so the train lands you at check-in rather than at a curb.
For live waits, parking, and terminal maps, check the official ATL site.
Terminals, checkpoints and transit change; the official ATL site is the live source.
Be at ATL two hours before a domestic departure and three before an international one. At an airport this size, treat those as a floor. They assume a normal day, not a holiday crush or a long security line. The plan above works back from there through security, bag drop, parking and the drive to a leave-by time.
The plan allows 30 minutes for a busy-but-normal standard lane. With TSA PreCheck it drops to 15 minutes, and you can edit either one to what you actually see. A checked bag lengthens the step before it. Checkpoint detail for ATL is in the section above.
Earlier than for a domestic one. International boarding starts 45 minutes before departure instead of 30, which pulls every step earlier. Use the airline desk for bags: documents get checked and counters often close an hour out. That also covers lap infants, unaccompanied minors, and oversized bags. If your boarding pass names a boarding time, match that.
Work backward from departure: boarding, time at the gate, the walk, the ride out to your concourse, security, bag drop, parking, then the drive (25 minutes in the default plan). Replace the drive with your own route. The leave-by moment is the first travel row, "Drive to ATL" by default.
Taking the train instead? The Amtrak station pages use the same kind of plan without security. The leave time calculator works for any appointment, and the wake-up time calculator runs it back to the alarm.
Two hours early still leaves the morning open: when to pack, when to leave. The plan keeps subtracting past the drive until it lands on a start time. Ready Time saves that chain and alerts you at each step, and can pick the flight up from your calendar.
Get a nudge at the right moment, while there's still time to act.
Each step gets its own alert, so you know what's next and how long you have.
“I get so tired of counting backward to when I should start my task. This app is the solution.”App Store review
Plans for the rest of the trip
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