So if Hipmunk, Kayak, or whoever wanted to remove their dependency from ITA (by doing more computational stuff themselves), what's the best place for them to get their data?
I'm pretty sure ATPCO is the only way to get the raw data; people who subscribe to it are not allowed to redistribute it.
As for getting processed data, that's called metasearch: scraping other sites' search engines. Kayak started out as pure metasearch, but moved to using ITA. Not sure whether they still do any scraping.
