That depends, Europe to/from Asia, whatever airline, it's uncommon not be on a 787/a350 which are very new or a380 (ranging from 2-10years old), occasionally ha

That depends, Europe to/from Asia, whatever airline, it's uncommon not be on a 787/a350 which are very new or a380 (ranging from 2-10years old), occasionally have to suffer a max 15 year old 777/a330 (some airlines are still ordering these new though), but rarely gets worse than this. Most short/regional 737/a320 seem older than above. Going west from europe to say Canada or states I admit is a different story old 757s, a340, 737 on long hauls, 747s, ran by terrible airlines like Air Canada, Air Transat, United and so on, even when they run new metal its terrible legroom.