ITA Airways offers upgrade options for passengers to move to the next higher class cabins of the aircraft, but it depends on the seat availability. Travelers can request an upgrade using miles, paying cash during check-in, or placing a bid. The ITA Airways Upgrade can be done through the official website, following several steps. For a detailed information about upgrades on the airlines, one can contact the ITA customer service team, or go through the blog by Airlines Group Travel at the mentioned link.