I have been looking at trips from PHX-CPT for awhile now.

I have had some issues with ITA showing $1,300 fares that are not replicable on either DL or KL's websites. Is this normal?

The point of this thread, however, is that I am pricing the same exact itinerary and DL is showing that the lowest fare is K and it's $2,169. KL's website is showing R inventory at $1,508.

I will buy when I find the price somewhere under $1,300 but am curious as to why there is such a large discrepancy in pricing.