MKE-DCA appears to end on October 27th.

MKE-DEN is also being reduced from 4x daily to 3x daily. This could be a simple seasonal reduction. However, Frontier has been thinning out frequency on other DEN routes to make room for some of the MCO expansion so perhaps it will remain 3x daily going forward.

No word on the fate of RHI, but I'm guessing Republic can't wait to dump the route.