A co-founder of the company I did the work for had a few contacts in both companies, so we were able to secure the data through them. It definitely isn't publicly available, but I imagine if you talked to a regional representative at either company, you could get them to generate a sample data dump for you (a gigantic CSV file, for example)
Kayak used to have a free API, but they shut it down "because of constly misuse". I'm not aware of any other service that's targeted at individual developers - most of these APIs are intended for huge companies with correspondingly deep pockets.
Kayak used to have a free API, but they shut it down "because of constly misuse". I'm not aware of any other service that's targeted at individual developers - most of these APIs are intended for huge companies with correspondingly deep pockets.