Jet2 has reduced flights to Jersey from Manchester, Birmingham and London Stansted airports following a review of its schedule and demand.
The airline currently operates three flights per week from Manchester to Jersey, but all will be withdrawn from June 28.
Both Birmingham and London Stansted will be reduced from two weekly flights to one from early July.
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Jet2 will continue to operate both its East Midlands and Newcastle to Jersey routes once a week, and its Leeds Bradford to Jersey route three times a week.
A spokesperson emphasised the reduced schedule was nothing to do with staff shortages amid recent widespread flight disruption, and was the result of a routine review.
They said: “We continually review our flying programme and will make adjustments where required. This gives us the ability to add flights and holidays in response to demand, and very occasionally we may withdraw flights too.
“Following this latest review, we have taken the decision to withdraw some services to Jersey from Birmingham, London Stansted and Manchester airports.
“Where customers are affected, we will contact them to let them know and they will receive a full refund.
“This decision has nothing to do with staff shortages that are currently impacting other airlines, and withdrawn flights were not due to depart until June 30 at the earliest.
“We have not made an cancellations due to staff shortages and we are continuing to receive positive feedback from happy customers and independent travel agents thanks to our dedicated teams who are working hard to provide the best customer service in the industry.”