My Dad 65years Old Dr Diagnose Pounomia His Lung Has

My dad 65years old dr diagnose pounomia his lung has a lots of liquid and oxgyen level is 65 he was traveling other country and stuck there in hospital.how long it takes better shape to fly it's a 15 hours flight. They put him antibiotics and using oxgyen tube or machine..2 weeks already no energy also he is obese .