MundoKit

Layover connection time calculator

Enter scheduled timestamps with UTC offsets and your own transfer-time budgets. See the spare minutes after the tasks and required gate-arrival margin.

Inputs
BA preset supplies only the onward gate journey and gate margin, checked 2026-11-14. Add other walking in Other tasks. Queue durations remain your estimates.
Choose from your itinerary requirements. For recheck without border processing, enter 0 for border time.
YYYY-MM-DDTHH:mm±HH:mm. Use the connection airport offset on that date.
Include the next date for an overnight connection. Explicit offsets handle clock changes.
min
Your estimate; default is an illustrative budget, not a typical queue or airport estimate. Enter 0 if not needed.
min
Your estimate; default is an illustrative budget, not a typical queue or airport estimate. Enter 0 if not needed.
min
Your estimate; default is an illustrative budget, not a typical queue or airport estimate. Enter 0 if not needed.
min
Your estimate; default is an illustrative budget, not a typical queue or airport estimate. Enter 0 if not needed.
min
Example only. Replace with your airline’s required gate-arrival cutoff.
min
Assumes the onward departure stays on schedule.

Results

Buffer after entered tasks and cutoff
35 min
Scheduled layover
120 min
Transfer task budget
55 min
Connection time budget
ItemMinutes
Deplaning15
Immigration / customs0
Bag collection and recheck0
Terminal transfer and walking20
Security20
Other tasks0
Required gate-arrival margin30
Inbound delay0
  • Positive buffer only means your entered budget fits. It does not certify a connection.
  • Check airline minimum connection times and separate check-in, bag-drop and security deadlines. Those earlier deadlines are not evaluated here.
  • No live queues, flight data, visa checks or missed-connection protection assessment.

Results update as you type. The share link stores your inputs after the # in the address, which is not sent to our server, but anyone you send it to can read them.

How it works

This is an arithmetic budget, not a minimum connection time database. Heathrow explains that connection time depends on the route, airline, baggage and terminal change. Obtain the requirements for your own itinerary from your airline.

Scheduled layover = departure instant − arrival instant Buffer = layover − transfer tasks − gate-arrival cutoff − inbound delay

Custom-mode defaults are editable illustrative budgets, not official estimates. The BA Heathrow preset uses its published approximate 20-minute journey from the T5 main terminal to B/C gates and required gate arrival at least 20 minutes before departure (checked November 14, 2026). Both are editable. This is not a total connection time: enter your own security estimate, add arriving-gate walking or other transfers in Other tasks, and review every budget. Unknown queues are not estimated by the preset. Choose the applicable processing mode; hidden border and baggage fields contribute zero. Times include explicit UTC offsets so overnight dates and daylight-saving changes can be represented. Tasks are assumed sequential; avoid double-counting overlapping activities. Calculations keep full precision and display minutes to two decimals.

Worked examples

Two-hour connection

10:00 to 12:00 at the same UTC offset gives 120 minutes. Deplaning 15, walking 20, security 20 and a gate margin of 30 leave 35 minutes.

Overnight with a delay

23:30 to 01:00 the next day gives 90 minutes. Transfer tasks of 55 minutes, a 30-minute gate margin and a 20-minute inbound delay leave −15 minutes.

Frequently asked questions

Does a positive buffer mean I will make the flight?
No. It means only that the entered tasks fit in the available minutes. Queues, disruption and earlier airport deadlines can invalidate the plan.
What is the difference from minimum connection time?
A published minimum connection time applies to a specific connection. This worksheet does not access those records or validate a ticket. Ask the airline about your exact flights.
How do I enter an overnight layover?
Use the next calendar date for departure, such as 2026-11-15T01:00+08:00 after 2026-11-14T23:30+08:00.
What changes for separate tickets?
You may need baggage reclaim, immigration, recheck and security. Enter those budgets and independently check bag-drop and check-in deadlines; the final gate buffer does not test intermediate deadlines.
Can I enter a zero-minute task?
Yes. Use 0 for tasks that do not apply. A final buffer of exactly 0 means there is no spare time in your scenario.

Sources

Last reviewed 2026-11-14; next review due by 2027-01-15. The method is written out above so you can check our math.