Ryanair — an Irish airline — carried more international passengers than any other airline in 2010. This isn’t a new trend: for the past two years, Ryanair has carried more international passengers than bigger airlines like Lufthansa, Air France, and American Airlines.
More interesting airline facts:
Southwest Airlines carried the most domestic passengers in 2009.
The airline with the largest fleet size is Delta Airlines, with a fleet of 743 aircraft. American carriers tend to top the list in terms of biggest airlines in terms of fleet size.
The world’s largest cargo airline in terms of fleet and domestic deliveries is FedEx Express. Counting international deliveries brings Korean Air Cargo to first place.