Quick answer

How long of a layover is safe?

Domestic: 45-60 min minimum. International with customs: 2-3 hours minimum. Different airline alliances: add 30-60 min. Add buffer for big airports like CDG, JFK, LHR.

🛫 Layover Calculator

Is your layover long enough?

Reviewed by: Montreal Tips editorial team · Last updated: May 13, 2026

Note: Estimates only — verify with official sources before booking.