Under Virgin Atlantic cancellation policy 24-hour, passengers may cancel their reservations within the time required to request a full refund for an existing reservation.

Here are a few things to keep in mind according to the 24-hour Virgin Atlantic cancellation policy: Ticket cancellation must be initiated within 24 hours of departure.
Additionally, the departure date must be 7 or more days from the date of reservation.
Virgin Atlantic's 24-hour cancellation policy must only apply to flights originating in the United States and Canada.