Layover Calculator
Check whether your connection time is enough by comparing it to the minimum connection time for your flight type, terminal change and bag re-check. Calculates in your browser.
Verdict
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The minimum connection times here are illustrative assumptions, not your airport's official figure.
Show the math
Each connection has a minimum connection time. We start from a base, then add time if you must change terminals or collect and re-check bags:
needed = base (45 dom / 90 intl) + 20 if changing terminals + 30 if re-checking bags
Your buffer is the scheduled layover minus that minimum. Under 30 minutes of buffer is risky; an hour or more is comfortable.
The 45- and 90-minute bases and the 20- and 30-minute additions are illustrative assumptions, not any airport's official minimum. Airports publish their own minimum connection times, check yours for tight transfers. Everything is calculated in your browser.
What this does
A layover calculator checks whether your connection time is enough by comparing it to the minimum connection time for your flight type, terminal change, and bag re-check.
How to use it
- Enter your layover length.
- Choose domestic or international.
- Flag terminal changes and bag re-checks.
- Read whether the buffer is safe.
How it works
The tool assumes 45 min domestic or 90 international, plus 20 for a terminal change and 30 to re-check bags; these are illustrative assumptions, not an airport’s official minimum. Under 30 min of buffer is risky; an hour-plus is comfortable.
buffer = layover − minimum connection time
Understanding your result
The buffer over the minimum connection time is the number that matters: under about 30 minutes is risky, while an hour or more is comfortable. A terminal change, a bag re-check, or clearing immigration on an international connection all eat into it, so when the buffer is thin, weigh the cost and hassle of a missed connection against booking a longer layover.
Example
A 120-minute international layover with no terminal change leaves a 30-minute buffer over the 90-minute minimum.
Last updated .
Frequently asked questions
How much layover do I need?
It depends on the airport, which publishes its own minimum. This tool assumes an illustrative base of 45 minutes domestic or 90 international, plus 20 minutes to change terminals and 30 to collect and re-check bags.
What counts as a risky layover?
Less than 30 minutes of buffer over the minimum is risky; an hour or more is comfortable. A negative buffer means it is likely not enough.
Where do I find the official minimum?
Airports publish their own minimum connection times. Use this as a sanity check, especially for tight or international transfers.
Is my data kept?
No. Everything is computed locally in your browser.
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