Travel hacking is a large topic with different attack vectors. Years ago at HiTB 2011 KL I covered the air-fare side of the game (PDF).
This talk covers the hotel aspects. The presentation covers attacks on hotel loyalty programs, e.g. through their best rate guarantees, promotions or goodwill points. The second part of the presentation covers scraping hotel APIs for information. For years I’ve been scanning website data to find great deals such as free rooms and large suites/villas for cheap.
I will outline the technical side of large scale scraping, errors in hotel APIs and how to use the data to our advantage.