So, you’ve jumped into the miles game and are ready to book an award flight on United.  Before you book that ticket, are your origin airport and destination airport in different regions?  If so, you might be eligible for a free flight.   The United MileagePlus program separates the world into different regions to determine award prices.   Here is a link to United’s current regions: As an example, Mainland USA, Alaska and Canada are all considered one region.  The islands of the Caribbean are in another.  Most of Europe is one region, while South America is split in half with Colombia, Ecuador, Guyana, French Guyana, Peru, and Suriname in one region,…