 WestJet has scheduled daily non-stop service to Calgary from Waterloo International Airport using Boeing 737-700 aircraft in the winter season and larger Boeing 737-800 aircraft in spring and summer season.They started service out of Region of Waterloo International Airport on May 14, 2007, for the summer season and then decided to fly year-round due to strong passenger demand.During the winter months Sunwing Airlines offers service to Dominican Republic.