Layover Time Calculator — Is My Connection Realistic?

How to use

1. Fill the fields above — results update as you type.
2. Adjust any input to compare scenarios instantly.
3. Nothing is uploaded; everything runs in your browser.

General information only — not medical, financial or legal advice. Figures cross-checked against public official sources (IRS / HMRC / NHS / WHO guidance); content last reviewed September 2026. For decisions that matter, confirm with a licensed professional in your country.

About this tool

Domestic connections need ~45 min, international ~90 (immigration), plus 20 if you must re-check bags. The verdict is the same rule of thumb airline planners publish. The question every connecting flight hides: is 55 minutes at that airport a comfortable stroll or a sprint? This layover time calculator gives you the raw window — arrival to departure, across midnight when needed — so you can hold it against the airport's published Minimum Connection Time (MCT): roughly 30–45 minutes domestic at efficient hubs, 45–60 minutes domestic at large ones, 60–90 minutes international Schengen-to-Schengen, and 90–120+ minutes international into the US or Canada where everyone re-clears passport control and rechecks bags. The risk asymmetry matters more than the average: a missed outbound costs a rebooking, but a missed connection at the end of a long-haul can cascade into a lost day and an unbought hotel — which is why the standard advice is 90+ minutes international even when the airline cheerfully sells 50. Same-ticket connections protect you (the airline must rebook you); separately booked tickets protect no one.

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