Q:

Am I allowed to ask for donations for Hajj and umrah for my parents who are not rich nor poor but cannot afford the blessed journey

A:

No. You are not allowed to collect donations for them since Allah has already exempted them of the burden of observing hajj and Umrah because they are not financially capable of doing them.

Moreover, the Prophet (peace be upon him) prohibited soliciting people’s help except at certain cases.  It was narrated that Qabisah ibn Mukhariq said: “I heard the Messenger of Allah says: ‘It is not right to ask (for help) except in three cases: A man whose wealth has been destroyed by some calamity, so he asks until he gets enough to keep him going, then he refrains from asking: a man who undertakes a financial responsibility, and asks for help until he pays off whatever needs to be paid; and a man concerning whom three wise men from his own people swear by Allah that it is permissible for so-an-so to ask for help, so he asks until he has enough to be independent of means, then he refrains from asking. Apart from that. (asking) is unlawful.”‘

Almighty Allah Knows best.