[This was originally posted on the US Airways forum, but since IDB compensation rules aren't unique to the carrier, I thought posting here might generate more discussion, particularly when I looked at the July thread on "The end of IDB compensation".]

I was recently IDB'ed from a US Air flight at the connecting point, and I found that my compensation was based not on the end-to-end fare, but on some fraction of it, apparently a pro-rated fare from the connecting point to the destination.

1) Is this common practice?
2) Is it what the rules really mean?
3) And is it right?

The rules say: "Passengers who are eligible for denied boarding compensation must be offered a payment equal to their one-way fare to their destination (including connecting flights)" I'd take that to mean that the whole end-to-end fare is relevant, not just the remaining segments that day. How many carriers interpret it otherwise?

To do anything else seems grossly unfair: just because US Air got me halfway to my destination, a four hour delay there has the same impact as a four hour delay at the origin would have. Why compensate differently?