Jet2 continues to operate one of the world’s largest active fleets of Boeing 737-300 passenger aircraft, with seven company-owned and fully paid-off planes in service. According to ch-aviation data, these aircraft, though less fuel-efficient and requiring more maintenance compared to newer models, remain cost-effective for the airline due to their ownership status. The oldest of Jet2's -300s is G-GDFG, delivered originally to Air Europa in 1997 and now over 28 years old.
The Boeing 737-300 is becoming increasingly rare among commercial airlines. In the United Kingdom, Jet2 stands as the only operator using this classic variant for scheduled passenger flights. The airline plans to retire its remaining -300s during the winter of 2027/2028. All operations with this type are currently based at Jet2’s original hub in Leeds Bradford.
Cirium Diio data indicates that Jet2 has scheduled 368 departures using its 737-300s from Leeds Bradford in September, a notable increase from 305 departures in September 2024—a rise of about 21%. This growth means the classic model now accounts for approximately 43% of all Jet2 departures from Leeds Bradford Airport, up from 36% a year earlier.