The expansion – which will see additional services to Dalaman, Antalya and Paphos – represents an extra 32,000 seats going on sale, bringing the airline and operator’s total capacity for winter to 4.3 million seats.
The companies have boosted services to Dalaman from all ten of their UK bases for next winter with an additional 15,000 seats.
Elsewhere, an extra 6,000 seats have gone on sale to Antalya from nine UK bases and 10,500 additional seats to Paphos have been added from Birmingham, Leeds Bradford, Manchester, Edinburgh and Stansted.
Steve Heapy, chief executive of Jet2.com and Jet2holidays, said: "In recent weeks we have expanded our programmes for this winter and summer, and today we are continuing to respond to strong demand by expanding our programme for next winter too.
"Adding capacity across many seasons shows just how popular our flights and package holidays continue to be, and we know this extra winter sunshine to Dalaman, Antalya and Paphos will be extremely popular with customers and independent travel agents."
