How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight? How much will I lose if I cancel my British Airways flight?