Is a 1½ hr layover in Atlanta long enough?

ATL · The William B Hartsfield Atlanta International · Atlanta, United States
Probably Enough

Yes, 1½ hours is probably enough for a layover at ATL (Atlanta).

Comfortable for domestic and international-to-international connections. Just barely hits the international-to-domestic MCT of 85 minutes.
Concourses
7
Max Transit
15m
Avg. Security
10m
Primary Hub
Delta Air Lines
Domestic → Domestic
35min
Domestic → International
40min
International → Domestic
85min
tight
International → International
90min
tight
AD PLACEMENT — CONTEXTUAL
Delta connections between Concourses A–B rarely need more than 20 minutes — 45 is comfortable.
International arrivals in Concourse F require customs — budget 85+ minutes for any domestic connection.
Sit near the front of your inbound flight — every minute counts on tight connections.
TSA PreCheck at the main checkpoint is typically under 5 minutes.
The Plane Train is faster than walking for anything more than one concourse away.
12a6a12p6p12a
Low risk
Moderate
High risk
Tight connections are safer outside peak hours. Morning rush (6–9a), midday (11a–2p), and evening (4–8p) are highest risk.
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.
Is 1½ hours enough for a layover at The William B Hartsfield Atlanta International (ATL)?

Comfortable for domestic and international-to-international connections. Just barely hits the international-to-domestic MCT of 85 minutes.

What is the minimum connection time at ATL?

Minimum connection times at The William B Hartsfield Atlanta International: Domestic-to-Domestic is 35 minutes, International-to-International is 90 minutes. These are the shortest layovers airlines will sell.

Can I make a 1½ hours connection at ATL on an international flight?

1½ hours clears the 90-minute international minimum connection time at The William B Hartsfield Atlanta International, but you should still head directly to your gate. 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.

How much time do I need for a layover at ATL?

We recommend at least 1 hour for a comfortable connection at The William B Hartsfield Atlanta International. This gives you enough buffer for security (typically 10 minutes) and transit between terminals (up to 15 minutes).

What happens if I miss my connection at ATL?

Delta has service desks in every concourse. For same-day rebooking, use the Fly Delta app — it's faster than waiting in line. Southwest and other carriers operate from specific concourses with their own rebooking desks.

AD PLACEMENT — BEFORE FOOTER