Distance From Alta Sierra Airport to Naples International Airport

The distance from Alta Sierra Airport () to Naples International Airport (NAP) is 6236 miles or 10035 kilometers or 5415 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Grass Valley ( United States ) to Napoli ( Italy )?

A one-way nonstop (direct) flight between Grass Valley and Napoli takes around 14 hours 20 minutes.

Estimated flight time from Alta Sierra Airport, Grass Valley, United States to Naples International Airport, Napoli, Italy is 14 hours 20 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - NAP

Kilometers		10035 km
Statute Miles		6236 miles
Nautical Miles		5415 nm
Avg. Time of Flight		14 hours 20 minutes

Alta Sierra Airport to Naples International Airport Flight Route Map - to NAP Flight Path

Location of Alta Sierra Airport & Naples International Airport is given below.
Click the map to view Grass Valley to Napoli nonstop flight path and travel direction.

Click to see flight route on Google Map between Grass Valley, United States and Napoli, Italy. .

Nonstop flight route between Grass Valley, United States and Napoli, Italy.

Time Difference Between the Airports • - NAP

Time difference between Grass Valley (United States) and Napoli (Italy) is 9 Hours.
Napoli time is 9 Hours ahead of Grass Valley.

Location	Local Time
Grass Valley (United States)	2026-06-18, 15:12:21 PDT
Napoli (Italy)	2026-06-19, 00:12:21 CEST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Alta Sierra Airport ( / 09CL) Grass Valley, United States

Destination

Naples International Airport (NAP / LIRN) Napoli, Italy