Data intelligence and analytics firm Cirium released its 2021 Airline Passenger Rankings yesterday. The headline rankings show US airlines filling the top four slots for passenger traffic and North America becoming the largest region for traffic in 2021. The rankings are based on Cirium’s traffic returns from more than 600 airlines.
Globally passenger traffic reached its peak of 4.7 billion journeys in 2019 before plummeting by more than 60% in 2020. While 2021 volumes rose by 29% to…