Nonstop flight route between Siena, Italy and Denver, Colorado, United States:

About this route:

A direct, nonstop flight between Siena-Ampugnano Airport (SAY), Siena, Italy and Denver International Airport (DEN), Denver, Colorado, United States would travel a Great Circle distance of 5,442 miles (or 8,759 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 Siena-Ampugnano Airport and Denver International 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 Siena-Ampugnano Airport and Denver International 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 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".
• Siena-Ampugnano Airport handled 3,745 passengers last year.
• Siena-Ampugnano Airport is a small military airfield near Siena, in Tuscany, Italy.
• The closest airport to Siena-Ampugnano Airport (SAY) is Grosseto Airport (GRS), which is located 36 miles (57 kilometers) SSW of SAY.
• 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 (SAY) currently has only 1 runway.
• 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.

Facts about Denver International Airport (DEN):

• "Mustang" has gotten mixed reviews.
• Airport officials say its large area contributes to DIA having the highest number of wildlife strikes of any airport in the United States.
• The closest airport to Denver International Airport (DEN) is Centennial Airport (APA), which is located 22 miles (36 kilometers) SSW of DEN.
• Because of Denver International Airport's high elevation of 5,431 feet, planes must typically fly at a faster airspeed in order to takeoff or land at DEN. Combined with a high temperature, this could make DEN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
• In April 1994, the city invited reporters to observe the first test of the new automated baggage system.
• The furthest airport from Denver International Airport (DEN) is Sir Gaëtan Duval Airport (RRG), which is located 10,877 miles (17,505 kilometers) away in Rodrigues Island, Mauritius.
• Denver International Airport (DEN) has 6 runways.
• The automated baggage system never worked as designed, and in August 2005 it became public knowledge that United would abandon the system, a decision that would save them $1 million per month in maintenance costs.
• At 35,000 acres, DIA is by far the largest land area commercial airport in the United States.
• Denver International Airport handled 52,556,359 passengers last year.
• Mustang, by El Paso born artist Luis Jiménez, was one of the earliest public art commissions for Denver International Airport in 1993.