We appreciate some of our Jet2.com customers may have unfortunately incurred additional expense due to this extraordinary situation, which was entirely outside of our control. Jet2.com will consider further options for passenger claims as the situation becomes clearer over the coming weeks.
Contrary to some posts on here Jet2 have
not refused to pay anybody reasonable expenses.
They are obviously waiting for guidance from the EU on whether EU261 applies, in full, to this situation and if so whether funding is to be forthcoming as happened in the USA after 9/11
And don't forget that Article 7, which covers compensation, has a get out clause:-
An operating air carrier shall not be obliged to pay compensation in accordance with Article 7, if it can prove that the cancellation is caused by extraordinary circumstances which could not have been avoided even if all reasonable measures had been taken.