The only schedule interesting flight that I could find is:
LTU 417 to DL
), Germany">DUS departs CUN
at 14:40, a/c is a A330-200.
But maybe you will see some of the charters and schedules airlines into CUN
: Air 2000(767), Martinair(767), Monarch(A330), My Travel(A330), Condor(767) Iberia(A319), Lan Chile(767), Air Canda (319, sometimes A330), AA