The operator said the system would offer “even greater flexibility” to anyone due to travel in June, July and August.
Under the scheme, any customers with existing bookings for holidays this summer will retain their deposits as a credit towards a new booking to be made within the next year.
Customers can change their existing bookings online to another holiday currently on sale and due to depart up to October 2021.
For a limited time, customers choosing this option will also be offered a discount off their new holiday as a thank you.