The announcement means the airline and operator has effectively closed off the current winter season.
“Due to the ongoing uncertainty and travel restrictions caused by the Covid-19 pandemic, we have taken the decision to extend the suspension of flights and holidays up to and including 25th March 2021,” it said in a statement.
It added: “Where customers yet to travel are affected by any programme changes, our approach to providing smooth and speedy refunds has been widely praised by independent travel agents, and we will be automatically cancelling affected bookings with a relevant refund.
