Airport Transit Time Calculator
Check whether your layover is long enough, and see where the time actually goes.
Formula and sources updated · Data sources · 1View algorithm, constants and default inputs (JSON)
About this calculator
Use this as a planning scenario, not an airport’s official minimum connection time. The fixed arrival, walking, security, immigration and baggage allowances are model assumptions; check your airport, airline and ticket rules before booking.
Worked example
calculated with the default values below
Layover time available 120 min · Type of connection International onward · Terminal change Yes · Bags must be collected and rechecked No — one booking · Separate tickets No — one booking Time you actually need 75 min · Buffer left over 45 min · Verdict Comfortable — time to eat something · Risk of missing the connection Low · Deplaning and walking 50 min · Immigration and security 25 min · Make this easier Check the terminal map before you land — some airport transfers take twenty minutes on their own.
Method and assumptions
buffer = layover − (arrival + immigration + security + walk + bags + tickets) Planning model only: arrival, security, walking and baggage times are fixed assumptions, not airport or airline minimum connection times. The model adds 35 minutes for immigration only on an international-to-domestic transfer. Verify actual airport and ticket requirements. Use this as a planning scenario, not an airport’s official minimum connection time. The fixed arrival, walking, security, immigration and baggage allowances are model assumptions; check your airport, airline and ticket rules before booking. Use the cited guidance and your own measurements, bills or product specifications to choose inputs. Sample defaults are not current local data.
Data sources
Use the cited guidance and your own measurements, bills or product specifications to choose inputs. Sample defaults are not current local data.
Disclaimer
These calculators give general estimates. Sizing, pricing, availability and standards vary by brand, retailer and country, so treat the output as a starting point and confirm it against the seller's or authority's own figures.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
buffer = layover − (arrival + immigration + security + walk + bags + tickets)
- buffer
- spare minutes after all steps
- layover
- available connection time
- arrival
- 15 min domestic, 30 international
- security
- 10 min domestic, 25 international
- walk
- 8 min same terminal, 20 with terminal change
- bags + tickets
- +25 min bag recheck, +30 min separate tickets
Planning model only: arrival, security, walking and baggage times are fixed assumptions, not airport or airline minimum connection times. The model adds 35 minutes for immigration only on an international-to-domestic transfer. Verify actual airport and ticket requirements.
Frequently asked questions
Are these official minimum connection times?
No. This is a planning model with fixed time allowances, not an airport or airline minimum. It adds 35 minutes for immigration only on an international-to-domestic transfer. Airport layout, passport control, security queues, mobility needs, airline rules and ticket protection vary; confirm the actual requirements before booking.
Which inputs and limits apply to Airport Transit Time Calculator?
Use the units shown beside each field. These are form limits, not recommended settings. Layover time available: 20–1,440 min buffer = layover − (arrival + immigration + security + walk + bags + tickets) Planning model only: arrival, security, walking and baggage times are fixed assumptions, not airport or airline minimum connection times. The model adds 35 minutes for immigration only on an international-to-domestic transfer. Verify actual airport and ticket requirements. Use this as a planning scenario, not an airport’s official minimum connection time. The fixed arrival, walking, security, immigration and baggage allowances are model assumptions; check your airport, airline and ticket rules before booking. Use the cited guidance and your own measurements, bills or product specifications to choose inputs. Sample defaults are not current local data.
What is a complete worked example for Layover time available = 120 min; Type of connection = International onward?
Inputs: Layover time available = 120 min; Type of connection = International onward; Terminal change = Yes; Bags must be collected and rechecked = No — one booking; Separate tickets = No — one booking. Calculation: buffer = layover − (arrival + immigration + security + walk + bags + tickets). Results: Time you actually need = 75 min; Buffer left over = 45 min; Verdict = Comfortable — time to eat something; Risk of missing the connection = Low; Deplaning and walking = 50 min; Immigration and security = 25 min; Make this easier = Check the terminal map before you land — some airport transfers take twenty minutes on their own..