This all seems a bit odd to me. What is actually confirmed to be on sale and operating?
Its only a couple of weeks ago that I posted about Cagliari not returning and it definitely wasn’t on sale for summer 2019 at that point. Malta non-stop 3x weekly and Catania 2x weekly were on sale.
Cagliari hasn’t operated since near enough the end of the summer season, it’s not just a Jan/Feb suspension. Perhaps the Echo have their destinations mixed up?