I tried to find something like a free API for flight details and prices to query. It surprised me that I didn't find something easy, complete, and free. Shoul

I tried to find something like a free API for flight details and prices to query. It surprised me that I didn't find something easy, complete, and free. Shouldn't the airlines want to make it easy for people to access their flight schedules and sell tickets? Maybe they do and I just didn't find it.