Hi, I've found a flight, Manchester-Gatwick-Mexico City for £545 which is much cheaper than the same flight leaving from Gatwick. Would it be possible for me to check-in at Gatwick instead of Manchester and just skip the Manchester flight as I live much nearer to Gatwick. (The Manchester-Gatwick flight is British Airways and the Gatwick-Mexico City flight is Mexicana, if that helps)
Thanks for any advice!

