Traveling by air is a process to be endured rather than enjoyed. Between the TSA security theater, complicated fee structures, delays or cancellations, and closely packed seats (which are causing a lot oftrouble lately) it’s not surprising that the best travel experiences will get mediocre reviews (“Nothing was delayed!”). Airlines have long complained about low margins, but their recent reports indicate record profits. As to the source of this success, Chris Elliott of the Washington Post recently theorized that mining and selling passenger data might have added a rich profit stream. There are a few ways that data could be monetized: more finely targeted price discrimination, selling data to third-party marketers, and/or using data on passenger behavior to more effectively market on-board amenities.