Pricing on Raleigh to Olbia business class swings widely by season. January, February, and March are the value months, when Sardinia is quiet and airlines discount seats aggressively — this is when the $2,400–$3,200 fares show up most often. October and November are the other sweet spot, after peak summer crowds clear out but before winter holiday demand picks up. Avoid pricing in June through August unless you're booking many months ahead; Sardinia's summer season pulls premium leisure travelers hard, and fares climb toward the $5,000–$6,000 range with limited award or discounted inventory. Generally, booking 3-4 months out gives the best shot at securing lie-flat seats at the lower end of the range, especially on the European-hub routings where business class demand is heavier from leisure travelers already flying summer or holiday patterns.