✈️ Flight Layover Time Calculator

Enter your arrival and connecting departure times (local airport time) to calculate your layover duration.

Arrival Time (local)

Connecting Flight Departure (local)

Connection Type

Subtract the two times, then check the minimum

Both flights touch the same airport, so both boxes share a time zone and nothing needs converting. The tool takes the gap and checks it against a published minimum connection time:

layover = departure - arrival
domestic MCT      45 minutes
international MCT 90 minutes

Land at 14:20, leave at 15:35 and you have 1h 15m: clear of the domestic bar by half an hour, short of the international one by fifteen minutes. For an overnight connection change the date too, or the tool rejects a negative gap.

What the minimum does not cover

MCT is per airport, per terminal. Atlanta publishes 40 minutes domestic; a Heathrow terminal change is 75-90; Charles de Gaulle asks for up to two hours between some terminal pairs.
Arriving from abroad into the US is the slow one. You clear immigration, collect the checked bag, re-drop it and pass security again. Two hours is realistic, whatever the 90-minute figure says.
Separate tickets get no protection. If the first flight is late the second airline owes you nothing and you must re-check bags. Allow three hours.

These are scheduled times. Clearing 45 minutes on paper assumes an on-time arrival, a gate ready and no long taxi. Booking the whole journey on one reservation protects you more than a bigger gap does.

Frequently asked questions

Is a 1 hour layover enough for an international flight?

Only if you stay airside in the same terminal and the ticket is one booking. Sixty minutes is under the 90-minute guideline, and any passport control, terminal change or bag re-check will not fit.

Do I need to collect my bags on a layover?

Not on a single ticket between airlines that interline - the bag is tagged through. You do on separate tickets, and on the first US entry point, where customs requires you to claim and re-drop it.

What happens if I miss my connecting flight?

On one ticket the airline rebooks you on the next flight at no cost, and owes duty of care in the EU and UK. On separate tickets you are a no-show and the fare is usually gone.