Am sure BNA O&D are strong. is connecting traffic 50% of current annual PAX?
I would wager its waaaaay lower than 50%. WN is the only airline that connecting serious amounts of pax at BNA and probably no more than 20% of their total BNA pax are connecting.
Maybe it is...and Nashville has been growing...but the pax growth at BNA is much higher than the population growth would warrant...therefor they must be connecting larger % of pax thru BNA. If I were to guess would think it is in the 35%-45% range
WN carries ~55% of the passengers in and out of BNA. Of WN's passengers, I would guess somewhere between 15-20% are connecting based on nothing other than my experiences of flying WN out of BNA. Assuming that all of the other airlines have essentially no connecting passengers at BNA (and my 15-20% number is accurate) then around 8-11% of the total passengers through BNA are connecting. BNA had 14.1 million passengers in 2017 total, meaning ~1.4 million were connecting and 12.7 million were O&D.
Nashville draws from a huge area. I am from Western Kentucky and my wife is from Norther Alabama, both of which overwhelmingly have residents traveling to BNA. BNA was Western Kentucky's airport in my mind, even prior to moving to Nashville. Places like Evansville, IN, Knoxville, Jackson, TN, and Chattanooga also have significant leakage into BNA because of the nonstops offered. The hospitality industry is also massive, although it flies under the radar. There are more hotel rooms in the Nashville MSA than in the MSAs of New Orleans or St Louis and roughly equivalent to the Denver MSA. That's a lot of people coming in and out of the city, a good number of which fly.