British Airways has quietly launched a new way to upgrade your flight and for once, it gives passengers real control over what they pay. Instead of fixed upgrade prices at check-in, BA is now testing a bidding system that allows selected passengers to make an offer for a higher cabin before departure. If your bid is successful, you move up. If not, you stay put, no harm done. It’s rolled out slowly, and not every route or flight qualifies yet. But this is clearly part of BA