Are there nonstop flights from Rome (FCO) to Saint Peter Port (GCI)?

No. The fastest connection is via Bastia, about 2h 42m of total flying time.

What is the fastest connection from Rome (FCO) to Saint Peter Port (GCI)?

via Bastia ≈ 2h 42m, via Paris ≈ 2h 45m, via London ≈ 2h 57m (estimated flying time, excluding layovers).

from 15,000 JAL miles (economy, one way, based on the published award charts).

Rome–Fiumicino Leonardo da Vinci International Airport (FCO) to Guernsey Airport (GCI)・1,429 km

No nonstop flights. The fastest connection is via Bastia (BIA), about 2h 42m of flying time (layover not included).

With milesJAL 15,000 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

9 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.