Nonstop flight route between Trieste, Italy and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between Trieste – Friuli Venezia Giulia Airport (TRS), Trieste, Italy and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 4,959 miles (or 7,980 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 Trieste – Friuli Venezia Giulia Airport and Sidney-Richland Municipal 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 Trieste – Friuli Venezia Giulia Airport and Sidney-Richland Municipal 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 Trieste – Friuli Venezia Giulia Airport (TRS):

• Trieste – Friuli Venezia Giulia Airport, formerly Trieste – Ronchi dei Legionari Airport, is an airport located 0.3 NM west of Ronchi dei Legionari, near Trieste in Venezia Giulia, north-eastern Italy.
• Trieste – Friuli Venezia Giulia Airport (TRS) currently has only 1 runway.
• Because of Trieste – Friuli Venezia Giulia Airport's relatively low elevation of 39 feet, planes can take off or land at Trieste – Friuli Venezia Giulia 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.
• The airport has a catchment area of approximately 5 million people, stretching beyond Friuli-Venezia Giulia into Slovenia and Croatia.
• Trieste – Friuli Venezia Giulia Airport handled 853,285 passengers last year.
• In addition to being known as "Trieste – Friuli Venezia Giulia Airport", other names for TRS include "Friuli Venezia Giulia "Pietro Savorgnan di Brazzà" Airport", "Aeroporto di Trieste–Friuli Venezia Giulia" and "Ronchi dei Legionari Airport".
• The furthest airport from Trieste – Friuli Venezia Giulia Airport (TRS) is Chatham Islands (CHT), which is located 11,931 miles (19,201 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• The first official documents citing the airfield of Ronchi dei Legionari date back to 30 November 1935, when the 4th Fighter Wing of the Royal Italian Air Force was based here.
• The closest airport to Trieste – Friuli Venezia Giulia Airport (TRS) is Portorož Airport (POW), which is located 25 miles (41 kilometers) SSE of TRS.

Facts about Sidney-Richland Municipal Airport (SDY):

• As per the Federal Aviation Administration, this airport had 2,031 passenger boardings in calendar year 2008, 2,766 in 2009, and 3,659 in 2010.
• Sidney-Richland Municipal Airport is a public use airport located one nautical mile west of the central business district of Sidney, a city in Richland County, Montana, United States.
• The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
• Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
• The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.