In 2010 a number of flights are being operated by other carriers using mainly Boeing 757 aircraft, some of which have been painted in Easyjet colours.

EasyJet initially operated Boeing 737 aircraft exclusively. In October 2002, it broke with its previous philosophy of operating just one aircraft type by ordering 120 Airbus A319 aircraft, plus 120 options, with CFM56-5B engines.

EasyJet's Airbus A319 aircraft were first introduced to EasyJet's Geneva base in October 2003. Due to toilet and galley configuration allowing the installation of more seats than a standard Airbus A319, EasyJet's Airbus A319 aircraft have two pairs of overwing exits, instead of the standard one pair configuration found on most Airbus A319 aircraft, to satisfy safety requirements. EasyJet has 88 outstanding options with Airbus which may be taken as any member of the Airbus A320 family.

EasyJet still operates the Boeing 737-700 from its London Lutonbase; however, beginning in December 2006, the airline started to return the Boeing 737-700 aircraft to their lessors. The Belfast base was converted to an A319 operation; the conversion finished in March 2010 with a total of 6 A319 aircraft. EasyJet plans to dispose of their entire Boeing 737 fleet by 2011.

Through the acquisition of GB Airways, EasyJet inherited nine Airbus A320 and six Airbus A321 aircraft. This gave the airline some time to evaluate the feasibility of operating these larger gauge aircraft. Based on this evaluation, EasyJet decided to swap 25 A319 orders for A320 in July 2008.

14 A319 planes and 1 A320 are used by its subsidiary EasyJet Switzerland with a Swiss registration.

EasyJet has operated the following types of aircraft:

Easyjet's head office is Hangar 89 (H89), a building located on the grounds of London Luton Airport; the hangar, a former Britannia Airways/TUI facility, is located 150 metres from EasyLand, the previous headquarters of EasyJet. Hangar 89, built in 1974, has 30,000 square feet (2,800 m2) of office space and can house three aircraft the size of an Airbus A319 or Boeing 737 at one time. When EasyJet received H89, it had a 1970s style office setup. EasyJet modernised the building and painted it orange.

Initially booking was by telephone only, with all EasyJet aircraft painted with the booking telephone number. There is no incentive for travel agents to sell EasyJet bookings because there is no commission, a standard practice for the low cost carriers.