If the tariff permits a rebooking, another rebooking is always possible. However, there are 2 scenarios due to the current situation:
Scenario 1: The airline changed the flights again after a rebooking due to COVID - 19 or the entry ban was extended again? In this case, many airlines waive the rebooking fees. Additional fees may still arise due to changes in season, booking class, flight route, etc.
Scenario 2: You do not want to fly on the rebooked date and voluntarily change the travel date? A rebooking is therefore to be made according to the normal tariff rule.
We would be happy to inform you specifically about your case - send us an email to firstname.lastname@example.org