Going abroad used to be easy. A passport, luggage, money in your pocket and off you went. Now, getting ready for an international trip involves a lot more than packing your suitcase. Making sure you have the right travel documents is essential — without them, you could be denied boarding before you even reach your destination. Here are the five most important documents to check before you fly. 1. A Valid Passport Your passport is your most important travel document. Check the