Bid for an up grade: Some Airways allow you to bid for an enhance to business class. It is possible to post a bid for your up grade and if it’s acknowledged, you’ll be upgraded at a discounted price. This Arrangement supersede any prior TravelGuzs settlement referring to the usage https://businessflightshop.co.uk/blog/what-are-the-top-things-to-remember-when-booking-business-class-flights-to-america/