The arrival of a Dornier aircraft, due to be added to Aurigny's fleet, has been pushed back by around six months.
The manufacturer of the new plane says it will not be ready until the second quarter of 2018, despite it originally being expected by next month.
RUAG Aerospace Services says it “sincerely regrets” the delay and understands the challenges it presents to the States-run airline.
The company will provide Aurigny with a replacement aircraft with two crew, until the Dornier arrives.
Aurigny boss Mark Darby says, while the delay will present problems, the company is still aiming to continue to provide services as scheduled.