[Ref. The Global Airline Industry Edited By Peter Belobaba, Amedeo Odoni and Cynthia Barnhart © 2009 John Wiley & Sons, L td. ISBN: 978-0-470-74077-4]
Yield = total passenger revenues / RPK
Yield is a measure of the average fare paid by all passengers per kilometer (or mile) flown. For example, if an airline records 140,000 RPK and $16,000 total passenger revenue, its yield would be $16,000/140,000 = $0.114 per RPK.