Bid for an up grade: Some airlines enable you to bid for an up grade to business class. You'll be able to post a bid for the update and when it’s approved, you’ll be upgraded at a reduced rate. Precisely what is a fifth freedom route? A fifth flexibility route https://businessflightshop.co.uk/blog/what-activities-you-can-do-in-the-yellowstone-national-park-for-free/