My experience, when it comes to scraping airline websites, the airline's legal department usually doesn't wait to have proof that you were the one that actually

My experience, when it comes to scraping airline websites, the airline's legal department usually doesn't wait to have proof that you were the one that actually scraped them. If you have their data on your website, they send you a C&D, and if they continue to find their data on your website, they will happily sue you. In other words, doesn't matter how you got the data, you must've broken the law if you got their data. I'm thinking of RyanAir suing Expedia, United vs wandr.me, Southwest suing SWMonkey.com, I'm sure there's countless others.