We are travelling to Cancun on BA from LGW in March. The flight time out says 12 hours on MMB but 11 hours when I click on the flight for more info. The general blurb on BA.com says 8.5 hours and coming back MMB says 8 hours then 9 hours under more info.

I'm guessing the 1 hour difference may be to do with the new time change in cancun that happened recently but the 3/4 hour difference between inbound and outbound doesn't make sense as there is no mention of any stops. I know eastbound flights are generally shorter but not by that much!

Does anyone know why there is a such a difference between the flights?