Originally Posted by PersonalFlotationDevice

Many airlines hubbed at KC at some point, but all fell my the wayside.

--TWA
--Braniff
--Midwest (the only one in the 2000s
--SkyBus (if you count that one)

I think I'm missing a few others...

I think Eastern gave it a go too in the late or mid 1980s if memory serves

More recently it seems that MCI is edging toward being a DL focus city as DL now serves several former Midwest/Frontier routes--but no SkyClub.