A few weeks ago I was browsing my local supermarket's book aisle. I saw a book with, I believe, a plane on the cover. I really enjoy horror/sci-fi/thriller books and movies that take place on a plane, so I read the back of this book.
From what I can recall, it was about a flight, already in air, and the pilot learns that there is some kind of plague happening on Earth? That's all that I can really recall. It was a trade paperback, so it may have been released last year, possibly?
It was at my local supermarket, and they don't have a large selection, so it was most likely a relatively popular fiction author. I believe the author was male and his name may have contained initials.