Whether a frequent flyer or just an occasional traveler, most of us appreciate the benefits of airline loyalty rewards – including points or miles for flights and possibly perks such as upgrades, priority boarding, complimentary baggage check, airport lounge access and more. While chances are you already know the basics of how to accumulate frequent flyer miles, there are some often overlooked ways to rack up points without even having to leave the ground. To make sure you don’t miss out, check out these lesser-known tips for maximizing your rewards.