Download your airline's app ahead of time, double-check your reservation information, and then use it to check in.
Carrying one of these cards can help you save money on luggage and find carry-on space in the overhead bins ahead of the crowd.
If you want to go for gold (or silver, or platinum) this year, make sure your frequent-flier number is tied to all of your airline reservations.
Seats and amenities can vary widely, even within a single family of jets in a single airline's fleet.
Liquids must be less than 3.4 ounces (100 millilitres) and in a quart-size see-through bag.