Jet2.com and Jet2holidays are on the countdown until their first flights depart from Liverpool John Lennon Airport, with operations starting in exactly three months The UK’s largest tour operator and third largest airline will start operating flights and holidays from Liverpool John Lennon Airport in exactly three months, with a flight to Tenerife signalling the start of operations from the airport. To mark the special occasion, Jet2.com and Jet2holidays have promised exciting plans at the airport for their first day.