When I started working on Caelvo, one of the first problems I wanted to solve was something I had myself many times. I live in Slovenia. When I search for a flight, Ljubljana is not my only option. I can also drive to Zagreb, Graz, Vienna or Trieste. Depending on the destination, sometimes another airport is much cheaper. The normal way is to open a flight search and try them one by one. GRZ β†’ PMI ZAG β†’ PMI LJU β†’ PMI VIE β†’ PMI Then maybe change the dates and do it again. I...