When you have put a reservation on hold, then you cannot change it. You can hold a flight which is seven days away. If you are booking two Etihad Airways flights and one of them is less expensive, or else the cheaper flight could be put on hold which could give you another 24 hours to book another flight and manage the Etihad Airways Deals. +1(855)550-9015. Read More: https://etihad.airways-phonenumber.com/