As a growing number of people push ahead with travel plans, airliner seats are filling up and airports are getting busier. And while traffic has not returned to pre-pandemic levels, the crowded, bustling atmosphere in many terminals is beginning to feel like it did a few years ago.
With the travel recovery gaining momentum, conversation has turned to passenger traffic, which the Airports Council International, an airport trade association, estimated was around 4.5 billion globally in 2021, or about 25 percent higher than the year before but still 50 percent lower than in 2019.
