Only my home airport and DFW beat it for visits as of the time of this writing. DFW built up a commanding lead back in 2009 through 2011 where I was both flying American nearly exclusively and had the Dallas/Fort Worth area as a frequent work destination. O’Hare is catching up, though, now that my status is with United, and I don’t have much reason to visit the Metroplex any more.
Even before the flight log started, I’ve been to O’Hare a number of times; I have a lot of family in the Chicago area, and we lived in the UK for a few years, so any time we came back to visit family we’d end up through there.
O’Hare is also home to some of my favorite airport food – Tortas Frontera, located in both the B and K concourses, provides great grilled sandwiches if you have the 10 minutes to spare for them to cook it to order for you.