Are there nonstop flights from Rome (FCO) to Phnom Penh (KTI)?

No. The fastest connection is via New Delhi, about 12h 4m of total flying time.

What is the fastest connection from Rome (FCO) to Phnom Penh (KTI)?

via New Delhi ≈ 12h 4m, via Bangkok ≈ 12h 4m, via Istanbul ≈ 12h 4m (estimated flying time, excluding layovers).

from 29,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Rome–Fiumicino Leonardo da Vinci International Airport (FCO) to Techo International Airport (KTI)・9,387 km

No nonstop flights. The fastest connection is via New Delhi (DEL), about 12h 4m of flying time (layover not included).

With milesANA 29,500 miles+ (via IST)JAL 45,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

15 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.