When I joined the airline industry, I thought I'd learn all kinds of secrets about flying. Although I don't know everything, in my years of working as a flight attendant , I have learned a few solid tricks for spending less on flights and in airports. Here are some of the best tips I've learned for saving money while flying . Plane travel can get expensive enough, from the checked-bag fees to the tickets themselves. So, don't waste your money on an overpriced bottle of water at the airport. You