Many airlines offer last minute upgrades as an auction / bidding system, and some offer them on sale at check in, or on the app.
Below I made a list of 37 airlines (in alphabetical order) with their paid upgrade policies, and links to how to either check if you're eligible, bid, or see an explanation of the rules.
Most of these airlines are using the same system for upgrade bidding, but all with slightly different terms.
First, I'll explain a little bit about the differences of the upgrade bids that airlines generally have, and the other variations for paid upgrades.
Then, after the Master List Of Airline Bid Upgrades, I'll share some rules and thoughts.Read more