I think the contract says that they have to transport you from point A to point B. And they seem to be doing this. I'm not sure that it specifies flying. It also allows for delays. So, they are in compliance, it would seem.
Cheers.
Now you are really stretching it! An airline contract to transport you from point A to point B without flying. Or a Greyhound contract to transport you from point A to point B without a bus. Come on, you are not even funny here!!!