The plane carrying a British man infected with the Ebola virus arrives just outside London Sunday.
Earlier, the specially adapted Royal Air Force cargo plane was sent to pick the healthcare worker up in Sierra Leone.
British Foreign Secretary Philip Hammond had authorized his repatriation for treatment.
The Department of Health said the patient -- whose identity has not been disclosed -- was quote "not currently seriously unwell".
The hemorrhagic fever has killed over 1,400 people, mostly in Sierra Leone, Liberia and neighboring Guinea.
It's the deadliest outbreak of the disease to date.
On Sunday, a new outbreak of Ebola was detected in Democratic Republic of Congo.