Nonstop flight route between Boston, Massachusetts, United States and Siena, Italy:

About this route:

A direct, nonstop flight between Boston Logan International Airport (BOS), Boston, Massachusetts, United States and Siena-Ampugnano Airport (SAY), Siena, Italy would travel a Great Circle distance of 3,987 miles (or 6,417 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Boston Logan International Airport and Siena-Ampugnano Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Boston Logan International Airport and Siena-Ampugnano Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Boston Logan International Airport (BOS):

• There was fierce opposition to the construction of 14/32 among communities adjacent to the northwest side of the airport, such as Chelsea and East Boston, as authorities acknowledged that these areas would likely see a slight increase in noise levels.
• Until around 1950 the airline terminal was at 42.367N 71.0275W.
• Runway 14/32 opened on November 23, 2006, Logan's first major runway addition in more than forty years.
• The closest airport to Boston Logan International Airport (BOS) is Norwood Memorial Airport (OWD), which is located only 15 miles (24 kilometers) SW of BOS.
• Because of Boston Logan International Airport's relatively low elevation of 20 feet, planes can take off or land at Boston Logan International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Boston Logan International Airport handled 3,021,863 passengers last year.
• Boston Logan International Airport (BOS) has 6 runways.
• The furthest airport from Boston Logan International Airport (BOS) is Margaret River Airport (MGV), which is located 11,767 miles (18,937 kilometers) away in Margaret River, Western Australia, Australia.

Facts about Siena-Ampugnano Airport (SAY):

• In addition to being known as "Siena-Ampugnano Airport", other names for SAY include "Aeroporto di Siena-Ampugnano" and "Siena-Ampugnano".
• The furthest airport from Siena-Ampugnano Airport (SAY) is Chatham Islands (CHT), which is nearly antipodal to Siena-Ampugnano Airport (meaning Siena-Ampugnano Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,049 miles (19,391 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• Siena-Ampugnano Airport (SAY) currently has only 1 runway.
• The closest airport to Siena-Ampugnano Airport (SAY) is Grosseto Airport (GRS), which is located 36 miles (57 kilometers) SSW of SAY.
• During World War II, the facility was known as Malignano Airfield.
• The airport resides at an elevation of 634 feet above mean sea level.
• Because of Siena-Ampugnano Airport's relatively low elevation of 634 feet, planes can take off or land at Siena-Ampugnano Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Siena-Ampugnano Airport handled 3,745 passengers last year.