What airline is best for perks once you're already on the plane? Free snacks, free alcohol, pillows, blankets, free headphones, free Internet, free movies, etc? I know Southwest still has free snacks (peanuts, pretzels, or cookies generally) and I believe free soft drinks are pretty standard on most flights. Are there other perks on board that make you go back to one airline over another without being nickel and dimed over everything? I know once I'm on the flight I really don't feel like continuing to pay for things! Any perks that you're definitely willing to pay for?