The operator initially froze its summer 2022 pricing at 2021 levels on bookings made by 12 April.
However, it has extended the offer to 30 April after the government offered "little clarity" in its travel taskforce announcement on the resumption of international travel late last week.
It means new customers can secure a summer 2022 holiday at 2021 pricing, while summer 2021 customers can move their holiday to 2022 while retaining the price they paid for their summer 2021 break.
