What are the guidelines for commercial airlines to deny boarding to a passenger because they are too sick to fly? I know that there are airline and national rules as to pregnant women for example, but are there rules airline by airline or are their national rules or do they just go by a doctor's recommendation as to medical conditions if a person is ok to fly?
I ask this as the College senior granddaughter of my mom's best friend has become ill, with substantial bleeding, while on a study semester in I believe is Bulgaria. This woman had been very ill as a child, including a bout of cancer at age 4, the parents want to bring her back to the USA (here in New Jersey) where doctors knowledgeable as to her condition and are tying to get her back on a commercial flight and doctors where she is are apparently trying to determine if it is safe for her to fly. I doubt she or the parents have medevac flight insurance. I know that private medevac flights are very expensive, the husband another friend of my mom's, became too ill in Florida to travel on a commercial flight and had to take a medevac flight back at a cost of something like $15,000. I would assume a medevac flight from Europe would be several times that amount.