Relevant article on the FT homepage today: "Travelers Forego 38 Million Trips to Avoid Hassles"
38 million trips deferred in 2013
$9.5 billion lost on airfare
$5.8 billion lost on hotels
$5.7 billion lost on recreation
$3.4 billion lost on food services
$2.8 billion lost on car rentals
http://www.frequentflier.com/blog/tr...avoid-hassles/
Take with a grain of salt, seeing who commissioned this study.