[TorbjornLunde]

Doesn’t also SAS and Lufthansa claim to be the most punctual airline?

(Seems like different airlines are the most punctual depending on how you measure it…)

[rmc]

I believe Ryanair are more likely to cancel a flight if it's delayed (e.g. by snow). This may or may not be a good way to ensure that "number of flights that arrive late" is low.