Many of us will be boarding an airplane for holiday travel in the coming week or so, and web site Upgrade: Travel Better offers five tips for getting an edge on the rest of the poor slobs crowding the airport. For example, put your airline’s phone number in your mobile phone’s address book, and set up a reminder to check in online as early as possible. How else to you plan to get a leg up at the airport this holiday? Let us know in the comments.