Are there nonstop flights from Rome (FCO) to San Juan (SJU)?

No. The fastest connection is via Madrid, about 10h 4m of total flying time.

What is the fastest connection from Rome (FCO) to San Juan (SJU)?

via Madrid ≈ 10h 4m, via Boston ≈ 11h 55m, via New York ≈ 12h 7m (estimated flying time, excluding layovers).

from 35,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Rome–Fiumicino Leonardo da Vinci International Airport (FCO) to Luis Munoz Marin International Airport (SJU)・7,697 km

No nonstop flights. The fastest connection is via Madrid (MAD), about 10h 4m of flying time (layover not included).

With milesANA 35,000 miles+ (via EWR)JAL 37,000 miles+ (via MAD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

17 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.