Originally Posted by FlyZB
it is the case on almost every route that MYT assigns longer flying times than its competitors.
I believe MYT use the 85th percentile of actual block operating times when assigning their scheduled block times for flights.
So if 85% of MAN-FUE flights operated in less than 04:40 (hence 15% took longer) then 04:40 is the scheduled time allocated to the flight (subject to slot allowances).
Other airlines may typically use a lower threshold when deciding on scheduled times.
Originally Posted by esvdx
I believe OTP performance figures you quote are only based on the departure time (off-blocks) from the UK airport and not related to the time the aircraft leaves downroute, or returns back to the UK
CAA OTP figures (used in CAA and flightontime.info statistics) record both departure from and arrival at UK airports, so flights are analysed both on outbound departure and return arrival. Also, the times are usually based on actual airborne and landing times (with taxy time allowance accounted for), rather than block times.