Is it permissible to delay the assumption of ihram for Hajj or Umrah until Jeddah for someone who finds it difficult to assume ihram on the plane and does not know the miqat?

If a person intends to perform Hajj or Umrah while on an airplane, they may perform ghusl (ritual bath) at their home and wear the izar (lower garment) and rida' (upper garment) if they wish. As they approach the Miqat, they should enter into ihram for whatever they intend, whether Hajj or Umrah. If they do not know the Miqat, they should ask the pilot, one of the assistants, the flight attendants, or experienced passengers.