You are forgetting Italian Alps!!
Turin (TRN) and Milan (both MXP
, and to a lesser extent also LIN
) usually receive a lot of ski charter during winter season, also Venice VCE and/or Treviso, and Verona VRN
get some good traffic from winter charter. In the future I hope also Aosta and Bolzano/Bözen will update their airport in term of runway lenght to get more traffic (mostly charter) to load up their touristic facilities.