I only ever get Easyjets and even though they state that boarding gates close half an hour before scheduled flight time, they realistically never even start loading til about 20 minutes before so I usually plan to arrive at the gate half an hour before the fight is supposed to leave, so I give myself about another half an hour to get through security. So an hour before takeoff I reckon. Never have hold luggage, mind. I hate waiting in airport lounges, however, I LOVE waiting at the departure gates. I try and wait so long that I’m the last person to board. I never have to stand in a queue this way. This makes me feel special.