Passengers intending to travel on the route beyond that date should make alternative arrangements, Jet2 said.

BBC: Jet2 to end daily Leeds Bradford flights to Belfast

To date, however, alternative fuels and green vehicles require more resources to deliver less energy and transportation at greater cost.

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And though the big airlines are still sending flights there, their passengers are for the most part being allowed to rebook for a later date or to an alternative destination.

ECONOMIST: Business travel