The cheapest Lisbon to Olbia return flight on the radar right now is €125, flying with Vueling Airlines + Volotea via one or more connections. It covers departures in December 2026, and every dated link below opens that exact LIS–OLB search on Skyscanner. At 39% under the €205 we normally record here, it is one of the strongest LIS–OLB fares in our index. Across 29 recorded checks it has ranged between €92 and €736. Our sampling points to December 2026 as the cheapest month to fly Lisbon to Olbia.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Lisbon? We track 47 other departure cities for Olbia, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Lisbon to Olbia is often still worth booking within a day or two of the fare we found.