While the Boeing 737-800 is the backbone of the Jet2 fleet, the airline is currently undergoing a massive modernization. In 2026, Jet2's fleet also prominently features the Airbus A321neo, which is slowly replacing their older aircraft to improve fuel efficiency and noise profiles. They also operate a smaller number of Airbus A321-200 models and some Boeing 737-300s for specific regional routes. For high-capacity routes or peak summer demand, Jet2 has historically leased Airbus A330-200 aircraft (often from AirTanker) to serve popular Mediterranean hubs from bases like Manchester. This diversity allows them to balance "leisure" capacity with operational costs. By the end of 2026, the airline aims to have a significant portion of its fleet consist of the "neo" (New Engine Option) variants, marking a major shift from their historically "all-Boeing" identity toward a more modern, Airbus-heavy short-haul operation.