This depends on where you check in, your destination and how much baggage you have.
We recommend that you arrive at the airport at least two hours before your flight's departure. This is because of possible waiting times. When you travel during peak hours or peak travel times, like school-, summer- and public holidays, we recommend that you arrive at the airport earlier than usual. This is to make sure you have enough time to check in, drop your baggage, go through the security control and to be at the boarding gate on time. See deadlines for check-in and boarding
Please note that your baggage needs to be checked in before the same deadlines as the above. Please note that other rules may apply to charter flights.