Delta Air Lines Leads in Airline Efficiency
There are a number of metrics to consider when trying to determine the most efficient airline, but the most important metric used by airline industry experts is that of the revenue per available seat mile (RASM). The RASM shows investors how much raw revenue the airline makes for every seat on every flight over the course of time. Forbes.com recently looked into the RASM of the top U.S. airlines in order to determine which airline has made the most of their services.
2014-2015 Most Efficient U.S. Airlines: