Are there nonstop flights from Denver (DEN) to Olbia (OLB)?

No. The fastest connection is via London, about 11h 28m of total flying time.

What is the fastest connection from Denver (DEN) to Olbia (OLB)?

via London ≈ 11h 28m, via Frankfurt am Main ≈ 11h 43m, via Rome ≈ 11h 48m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Denver International Airport (DEN) to Olbia Costa Smeralda Airport (OLB)・8,842 km

No nonstop flights. The fastest connection is via London (LHR), about 11h 28m of flying time (layover not included).

With milesANA 27,500 miles+ (via FRA)JAL 37,000 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

5 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.