Check-in at the airport counter is free and usually takes place 60 minutes to 3 hours before departure. We strongly recommend you check in at least 90 minutes before your actual departure.
You can check inonline for most flights from 48 hours to 90 minutes before departure, if you don't want to print your ticket, simply use mobile check-in without downloading an app, then just show the barcode at the airport. For some destinations, online or mobile check-in is not possible.