Hey Guys. Looking For The Most Accurate, And Reliable, Flights API (inc. Prices) Which Isn’t Housed Behind A “Commercial Use Only” Barrier.

The majority which I’ve found either have serious barriers to entry, or serious reliability issues. And Skyscanner hides its API behind “commercial use only”, which I may be wrong about, but feels like a play to be alerted to competitors instead of a genuine application process?

Either way, any recommendations would be ace. Don’t mind paying, depending on the cost – so this is more about quality and reliability, rather than “free to access” or anything like that.