Ahh, the holidays. A time of year to get together with family and celebrate being home, enjoy delicious food, go shopping and most importantly, be lazy. In college, the best part about going home for the holidays is being able to not worry about school or any school work.
Traveling is half the fun, usually (unless you are waiting for a delayed flight like me right now, then its not.) The best way to keep the travel fun is to be comfortable. The more comfortable you are, the less likely you are to be in that awkward position on the flight that leaves you in pain after a while. Being uncomfortable on a flight is the worst, so my advice is to always stick to the main basics for airport fashion when traveling.
Do your feet a favor and leave the heels at home. Airports aren't a high-fashion fashion show so honestly, save your feet, legs and back and just stick to the sneakers. Which brings me to my next point:
Wear tennies. (aka sneakers, tennis shoes) Just wear something comfortable that you can run in if you are late for your flight. You don't want to be that lady that has to run in a weird way because you're wearing heels and I don't want you to break an ankle because trust me, it's not a nice sight to see.
Airports are always cold, so make sure to wear a sweater/sweatshirt, or a jacket. Even if you are leaving Miami in July, the plane will probably be chilly.
Wearing leggings, soccer pants, or just loose fitting pants are the best way to go if you want to be comfortable. Even if you can't spread out on the plane, at least your legs can breathe in leggings instead of Satan's invention of leg prison, aka...denim jeans.
Honestly, you can wear whatever you want on a plane, but being comfortable while traveling should be your number one priority!