Both international airports :

• Aéroport d´Entzheim (Strasbourg)  = 66 km from Colmar per highway
  www.strasbourg.aeroport.fr 
• Euroairport (Mulhouse)  = 64 km from Colmar per highway
  www.euroairport.com

> Ship from airports to Strasbourg or Mulhouse by bus (More information in airports)
> Ship from airports to Strasbourg or Mulhouse by train information : www.sncf.com
> Renting car at each airport