Flight layover time calculator
Verdicts for 112 airports, built on verified minimum connection times
Enter your airport and connection details. The calculator weighs the published minimum connection time, terminal transfers, customs and immigration buffers, and checked-bag recheck rules, then tells you whether your layover is enough. No signup, no guesswork.
The airport connection time page has the full sortable table behind this calculator: minimum connection times, peak and off-peak customs waits, and airside connectivity for all 112 airports, plus airport-by-airport layover guides for the major hubs.
Layover calculator questions, answered
How does the flight layover calculator work?
Pick your airport and describe the connection: domestic or international legs, same or different terminals, checked bags, and whether you booked one ticket or two. The calculator checks the airport's published minimum connection time, adds terminal transfer and customs buffers from our verified data for 112 airports, and returns one of four verdicts: below minimum, tight, comfortable, or long enough to leave the airport.
What is a minimum connection time (MCT)?
The minimum connection time is the shortest legal gap between flights that airlines will sell on a single ticket at a given airport. It is a booking rule, not a comfort guideline. An itinerary at exactly the MCT has no slack: one late inbound flight or a slow customs queue and the connection fails.
How much layover time should I add on top of the minimum?
Published minimums run from 25 minutes at Amsterdam to over an hour at hubs with no airside links, like LAX. As a rule of thumb, plan roughly double the minimum for domestic connections and add 60 to 90 minutes whenever an international arrival, a terminal change, or a checked bag recheck is involved. The calculator does this math per airport instead of guessing.
Does the calculator account for customs and immigration?
Yes. For international arrivals it adds an airport-specific customs and immigration buffer, with peak and off-peak estimates, and flags when you must collect and recheck checked bags. Peak customs waits in our data range from about 15 minutes at Singapore Changi to 40 minutes at JFK.
Is a layover on two separate tickets riskier?
Much riskier. On a single ticket the airline must rebook you free if a late inbound flight breaks the connection. On separate tickets no one owes you anything: you collect any checked bags, re-check them, often change terminals, and buy a new ticket if you miss the second flight. The calculator flags separate-ticket connections and recommends more padding.
Which airports does this layover calculator cover?
112 airports worldwide, each with its published minimum connection times, terminal transfer system, and customs estimates, verified against official airport and OAG data. The full sortable table lives on the airport connection time page.
Airport data last verified . Minimum connection times and customs estimates come from official airport sources and OAG data; always confirm with your airline before booking a tight connection.