Check-in at the airport is free and counters are open 45-120 minutes before departure.
Online check-in is available on departures from Prague, London, Moscow and Malaga. You can check in 60 minutes to 30 hours before departure. Please note, there is a seat-specific fee for online check-in (€15 per seat). If you don't want to pay, don't click on the seat map, the system will assign you a random seat for free.