Check-in Calculator

Know exactly when online check-in opens for your flight, in the airport's time zone and in yours. Airlines open online check-in a set time before departure: 24 hours, 48 hours, sometimes 30 days. Work that out across time zones and it's easy to be an hour off, and checking in late can mean a worse seat. Check-in Calculator does the maths from your toolbar in a few seconds. How it works 1. Pick your departure airport. Search 9,000+ airports by IATA code, city or name. 2. Enter the departure date and time exactly as printed on your ticket. 3. Choose when your airline opens check-in: 12–72 hours or 3–60 days before, or any value of your own. What you get - The opening time in the airport's local time and in your own time zone - A live countdown, then "Open now" the moment check-in opens - One-click "Add to Google Calendar", or an .ics file for Apple Calendar, Outlook and others, with a reminder 10 minutes before - A link to share the same calculation - Daylight-saving changes handled correctly, including times that don't exist or happen twice on change-over nights - Your last flight is remembered, so next time the answer is already there - English, Ukrainian and German; light and dark themes Private by design No account, no ads, no tracking. The airport database is built in, so everything is calculated on your device and works offline. The extension can't read or change the websites you visit: its only permission is storage, to remember your settings.