In other questions on this site, it has been suggested to use FlightAware to check by how much a flight was delayed.
However, I've noticed that the scheduled arrival time from FlightAware (and therefore the computed delay) doesn't match with the time written on the ticket.
(example for a flight that is scheduled for later today:
I'm asking because FlightAware tells me that a delay I've recently experienced was of 3 hours and 19 minutes, but by looking at the Ryanair's reported scheduled arrival time, the flight has only been 2 hours and 59 minutes late. If the former is to be believed, I'd get EU261 compensation!