Stick with One Airline
This tip is only for the frequent fliers out there. If you or your company regularly books tickets, make sure you book them from the same airline every time. By doing this, you can start building a “wallet” of miles flown, which you can exchange for all sorts of goodies.
Also, you might receive priority treatment if one of the airline’s employees sees you enough times. The kinds of perks you receive as a frequent flier with tons of miles include but are not limited to priority boarding, free upgraded seats, and free checked bags. One perk of booking exclusively with Delta is that you get to wrestle their flight attendants on occasion!