BA Redemption Finder only works with direct flights operated by British Airways.
We'll now tell you clearly when we think that the route you've searched for isn't one we support - so, for example, if you searched New York to San Francisco you'd see an error message like this:
If you see an error like this for a route that BA do run, then let us know and we'll get it fixed.
We'll also show a clear error message when you search for seats in a cabin that isn't offered on a particular route. So, for example, if you search for First seats from London to Paris, you'll see this: