Are you planning on traveling home for Christmas? The Holiday Air Travel Forecast predicts that this Friday, December 19th, will be the busiest travel day this holiday season. The report predicts that overall 45 million customers will travel via North American airlines over the holiday period, which is defined as December 17th through January 4th. If you're after less-crowded flights you'll want to consider traveling December 24th, 25th, 31st or January 1st, the lightest holiday travel dates. Last year nearly 44 million passengers traveled by air for the holidays, meaning about two percent more people are expected to fly this year.