Outside of school holidays and public holidays, we recommend within Europe, at least 2 hours before departure and outside Europe, at least 3 hours before departure.
Are you traveling with hand luggage only or have you checked in online? Then you have more time, but always keep in mind that there can be a lot of traffic on the road, possible delays if you travel by public transport and that there can be a lot of people at the airport during holidays and public holidays. It would be sad if you missed your flight.
Always visit the airport's website and/or the airline's website for the latest flight information.