The flights are there. But it is not possible to book them with the territorial continuity rate, therefore subsidized. From Cagliari to Milan or Rome (or vice versa), the joke is served on the Ita Airways website: residents in Sardinia who try to book a ticket online on the company's website come across a “sorry, an error has occurred. If the problem persists, contact support for further information."
However, reservations are not barred to everyone. If you choose the web path dedicated to non-residents you will arrive without problems at the purchasing page, with a wide choice of the various times available. Prices for connections in the next few days are exorbitant: a flight to Linate on Sunday costs up to 294 euros.
For those who are patient and have time to waste waiting in line, there is a solution: you can call the toll-free number and make the purchase with the operator. A kind call center employee explains: "Yes, this is the only way for now, until the problem is resolved on the site." Which has persisted since yesterday.
