Bid for an up grade: Some airlines help you bid for an up grade to business class. You could post a bid with the upgrade and if it’s accepted, you’ll be upgraded at a discounted amount. We may well modify, revise or update this Settlement and/'or perhaps the Privateness Plan, https://businessflightshop.co.uk/blog/top-reasons-to-plan-for-costa-rica-on-next-vacation/