The business on Thursday (19 November) disclosed a pre-tax loss of £119.3 million for the six months to 30 September, down from a £337 million profit during the same period last year.
Operational profit, meanwhile, fell from £365.1 million to a £111.2 million loss during what Jet2 described as a period of "unprecedented operational and financial challenges" during which it was forced to ground much of its fleet from mid-March through to mid-July.