Routes served
Rankings focused on how many airport pairs each airline serves.
Airlines ranked by destination count, highlighting global carriers with the widest route networks and the ability to connect passengers to the largest number of cities worldwide.
Airlines ranked by the number of U.S. destinations served, highlighting carriers with the broadest domestic networks and the ability to connect cities across the country.
Airlines ranked by the number of European destinations served, highlighting carriers with the broadest route networks across dense short-haul markets and international connections.
Flights per day
Rankings focused on the busiest airline networks by daily service frequency.