Holiday for Dad

Hi Everyone, I have started this page because I wanted to give my father a wonderful present. My father is 73 and hasn't been on a holiday in 15 years. He has often said he would love to fly to the UK to see the house his parents lived in and migrated from.  I would love to fly him over and back in Business class because this may be the last trip he is able to make and I think economy would be bad for his knees and hips. I am happy to pay for 1/2 the flight but cannot afford to fly him there and back. Any help would be greatly appreciated. Thank you.