Sardinia

Try Meridiana. It looks like there are 4 flights a day from Rome (FCO) to Olbia (OLB), duration 55 minutes.

Meridiana from FCO to OLB or Ryanair from CIA to AHO.

We booked a small room on the overnight car ferry (Corsica Ferry) from Livorno, after we had driven to Pisa for the day. Our ferry did not leave until around 11 PM and got in very early. We found it cheaper to rent our car on the mainland, rather than picking up another in Sardinia. There is really not much to see around Olbia, but the North and Northwest were awesome. We really enjoyed our Agritourisimo in the North; Agri Stazzi La China; wonderful home cooked meals, and a great location to explore the North. We also enjoyed our stay in Algehero. Then we drove down the West coast and ended up staying just outside Cagliari. We loved Cagliari, and the surrounding beaches. We flew back from Cagliari to Rome Ciampino on Ryan Air. Make sure that you understand how to get from Ciampino to FCO. We used the Lonely Planet guidebook to plan our trip, and vetted our rentals on Trip Advisor. We usually use Autoeurope for our car rentals. We found driving in Sardinia to be super easy. Not all of the roads were on our GPS, so our Michelin map of the island was mandatory. When we search for lo-cost inter EU flights we usually use Skyscanner and Whichbudget.com.

Tante grazie/Many thanks to you kind folks who replied to my questions about travel experience in Sardinia. I am a bit more relaxed with this enhanced info.
Thanks so very much! Linda