Hi Dannyrado and welcome!
The TOM2690 on Saturdays (MAN to Tenerife) is scheduled to be on a B767 throughout October, as is the TOM2776 on Sundays (MAN to Tenerife).
Alternatively the TOM2126 on Mondays (MAN to Arrecife) is scheduled on a B767 throughout the summer, as is the TOM2468 on Thursdays (MAN to Arrecife).
If you wanted to travel a little bit earlier, the TOM2404 on Thursday (MAN to Las Palmas) is scheduled on a B767 but ends on the 27th Oct.
The B787s will be getting ready for the Winter programme by that point so their involvement ramps down with the flying programme. Hope that helps...