If your airline offers this option, you can check in on the airline’s website before leaving for the airport. Remember to print your travel documents (e-ticket and boarding pass).
At the check-in counter
Check-in counters open two hours and close 40 minutes prior to flight departures. Airline personnel will check you in as quickly as possible.
Passengers requiring special assistance (children travelling alone, groups, passengers with reduced mobility, etc.), are asked to check in at least 30 minutes prior to departure.
After this time, your seat may be assigned to another passenger.