Originally Posted by
midlevels
Yup, I've been there too. Was annoyed about the one-hour early arrival into HKG as I was in F and wanted to sleep!

Probably because many on this redeye flight are business travellers with last minute changes or plans, e.g. delayed ending of meeting so changed to last flight of the day, or urgently need to go to HKG for a meeting tomorrow... stuff like that?