Layover Time Calculator

What this tool does

The Layover Time Calculator tells you how long your connection is and whether that is enough. You enter the arrival time of your inbound flight and the departure time of your onward flight at the same airport, describe the kind of connection, and the tool computes the layover duration and compares it against typical minimum connection times. It then gives a clear verdict — below the typical minimum, tight, comfortable or plenty of time — so you can judge the risk before you book or before you fly.

When you’d use it

Connections are where itineraries fall apart. A gap that looks fine on a booking site can be uncomfortably short once you account for taxiing, disembarking, immigration queues and the walk to a far-flung gate. Travellers use this tool while comparing flight options, to avoid booking a connection that is doomed from the start; after booking, to know whether to relax or to have a backup plan; and especially when piecing together separate tickets, where a missed connection is the traveller’s own problem. It is also useful for deciding whether a layover is long enough to leave the airport or grab a proper meal.

How to use it

1. Enter the time your inbound flight arrives.
2. Enter the time your onward flight departs. If it leaves after midnight, tick departs the next day.
3. Choose the connection type — domestic to domestic, domestic to or from international, or international to international.
4. Tick change terminals if you have to move between terminals.
5. Read the layover duration and the verdict to see whether the connection leaves enough time.

How it works

The calculator subtracts the inbound arrival time from the onward departure time to get the raw layover, adding a full day first if you marked the connection as overnight. It then picks a typical minimum connection time based on your choices: domestic connections need the least, mixed and international ones need more because of immigration and security, and changing terminals adds further time. Comparing your layover against that minimum produces the verdict — risky if you fall below it, tight if you only just clear it, comfortable with a healthy margin, and plenty when the gap is generous.

How to read the result

Start with the verdict badge: it is the quick signal of how much risk your connection carries. The layover duration below it is your actual gap, and the “typical minimum” line shows the reference figure it was measured against. Remember that the minimum is general guidance — the airport you are connecting at may publish a shorter or longer figure of its own. The single most important factor the tool cannot see is whether your flights are on one ticket or two: a protected connection on a single ticket shifts the responsibility to the airline, while separate tickets leave the risk with you. Treat a “tight” or “risky” verdict as a prompt to check the airport’s real minimum and to think about carry-on-only travel.

Tips

Build in more buffer than the bare minimum, especially at large hubs, in busy seasons or when bad weather is likely. If you can, travel with carry-on bags only — collecting and re-checking hold luggage eats into a connection fast. For working out the total length of a multi-leg journey, see the trip duration calculator; to convert a time between zones, the time zone converter; and to prepare for the trip, the packing list generator.

Privacy

This calculator runs entirely in your browser. The times and connection details you enter are never uploaded, never stored and never logged — close the tab and nothing remains. No account, no tracking, just instant local maths.