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How early to get to the airport for an international flight

Airlines recommend 3 hours, but the hard limit is the check-in and bag cutoff, usually 60 minutes before departure. Here's what changes leaving the US, flying home from Europe with the new EU border system, the UK and US preclearance.

The short answer

Airline cutoffs for international flights

Leaving the US

Flying home from Europe: the Entry/Exit System

The UK

US preclearance: customs before you fly

Landing back in the US

Get the time for your international flight

Enter your flight number and where you're leaving from. Leave By adds passport control when your route needs it, including EES leaving Europe and US preclearance, and gives you the minute to leave.

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Checked October 24, 2026. Rules change; always confirm with your airline.