I'm from YUM. There's a 8h30 layover before the flight to CLT. Can I skip the first leg YUM - PHX, check-in in YUM and drive to PHX and catch the PHX - CLT - YUL flights?
Reason :
Trip A-B-C-D is :
YUM - PHX - ( 8h30 layover ) - CLT - YUL
Price : 400$
Trip B-C-D is :
PHX - CLT - YUL
Price : 620$