ATLAtlanta·The William B Hartsfield Atlanta International·Atlanta, United States
Recommended minimum1 hour
Concourses
7
T, A, B, C, D, E, F
Max Transit
15m
via train
Avg. Security
10m
~5m with PreCheck
Primary Hub
Delta Air Lines
Domestic → Domestic
35min
Domestic → International
40min
International → Domestic
85min
International → International
90min
AD PLACEMENT — CONTEXTUAL
The Plane Train automated people mover runs underground between all seven concourses, departing every 1–2 minutes. A full end-to-end ride takes about 10 minutes. Walking between adjacent concourses takes roughly 10 minutes via the underground walkway. International arrivals in Concourse F must clear U.S. customs and immigration before connecting to any other concourse — there is no sterile transit option.
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Low risk
Moderate
High risk
World's busiest airport since 1998
Delta mega-hub with 1,000+ daily flights
No sterile international transit
Plane Train connects all 7 concourses
Delta Air Lines
Is 30 minutes enough for a layover at ATL?

Five minutes short of the domestic MCT. Possible only for same-concourse Delta connections with no delays. See full 30 min guide →

Is 45 minutes enough for a layover at ATL?

Clears the domestic-to-domestic MCT (35 min) and domestic-to-international (40 min) with a small buffer. But international arrivals require customs and immigration — minimum 85 minutes. Same-concourse Delta connections are routine; anything involving Concourse F immigration is a different story. See full 45 min guide →

Is 1 hour enough for a layover at ATL?

An hour gives comfortable domestic connections with buffer for delays. Still not enough for international arrivals clearing customs. See full 1 hr guide →

Is 1 hour 15 min enough for a layover at ATL?

Plenty of time for any domestic routing. You can walk between concourses instead of riding the Plane Train if you prefer. See full 1¼ hr guide →

Is 1½ hours enough for a layover at ATL?

Comfortable for domestic and international-to-international connections. Just barely hits the international-to-domestic MCT of 85 minutes. See full 1½ hr guide →

Is 2 hours enough for a layover at ATL?

Two hours covers every connection type at ATL comfortably. Time to grab food at one of the concourse restaurants. See full 2 hr guide →

Is 2½ hours enough for a layover at ATL?

More than enough for any connection. You could visit the airport's art installations along the underground walkway. See full 2½ hr guide →

Is 3 hours enough for a layover at ATL?

Three hours at ATL means time to eat, explore, and still arrive at your gate early. Consider the SkyClub if you have access. See full 3 hr guide →

Is 4 hours enough for a layover at ATL?

Four hours is more layover than you need. Take the MARTA train downtown if you want to see the city — it's a 20-minute ride to Five Points. See full 4 hr guide →

AD PLACEMENT — BEFORE FOOTER