The Duke of Sussex will fly from the couple’s home in California and will be following Covid-19 protocols for the trip, as well as during his visit.
It is understood that the duchess, who is pregnant with the couple’s second child, had made every effort to join her husband but was not given clearance to travel by her doctor.
Harry has not returned to the UK since stepping down as a senior royal just over a year ago.
It also be the first time he has seen his family in person since his and Meghan’s bombshell interview with Oprah Winfrey – in which they accused the royal family of racism and the institution failing to support a suicidal Meghan.
Currently, funerals can be attended by a maximum of 30 people due to Covid-19 restrictions.
Mourners coming from outside England are required to self-isolate from arrival and for the first full 10 days after they arrive.
But Harry will be entitled to leave his place of self-isolation on compassionate grounds to attend the funeral.
He could also be released from quarantine if he gets a negative private test on day five under the Test to Release scheme.