Nonstop flight route between Incheon (near Seoul), South Korea and Challis, Idaho, United States:

About this route:

A direct, nonstop flight between Incheon International Airport (ICN), Incheon (near Seoul), South Korea and Challis Airport (CHL), Challis, Idaho, United States would travel a Great Circle distance of 5,626 miles (or 9,053 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 Incheon International Airport and Challis 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 Incheon International Airport and Challis 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 Incheon International Airport (ICN):

• Located 48 km west of Seoul, the capital and the largest city of South Korea, Incheon International Airport is the main hub for Korean Air, Asiana Airlines, Jeju Air, and Polar Air Cargo.
• Incheon International Airport handled 41,482,828 passengers last year.
• The Cargo Terminal Complex comprises six cargo terminals, five separate warehouses, All E/F Class 36 parking stands, and administration offices.
• The furthest airport from Incheon International Airport (ICN) is Villa Gesell Airport (VLG), which is nearly antipodal to Incheon International Airport (meaning Incheon International Airport is almost on the exact opposite side of the Earth from Villa Gesell Airport), and is located 12,246 miles (19,707 kilometers) away in Villa Gesell, Buenos Aires, Argentina.
• Plans to invest ₩4 trillion by 2017 to expand Incheon International Airport.
• Incheon International Airport is the largest airport in South Korea, the primary airport serving the Seoul National Capital Area, and one of the largest and busiest airports in the world.
• The closest airport to Incheon International Airport (ICN) is Gimpo International Airport (GMP), which is located 20 miles (33 kilometers) ENE of ICN.
• After the Seoul Olympics of 1988, international air traffic to Korea increased.
• Incheon International Airport (ICN) has 3 runways.
• In addition to being known as "Incheon International Airport", other names for ICN include "인천국제공항 仁川國際空港" and "Incheon Gukje Gonghang Inch'ŏn Kukche Konghang".
• Phase 2 construction began in 2002, and was originally expected to be completed in December 2008.
• Because of Incheon International Airport's relatively low elevation of 23 feet, planes can take off or land at Incheon 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.

Facts about Challis Airport (CHL):

• The closest airport to Challis Airport (CHL) is Lemhi County Airport (SMN), which is located 45 miles (72 kilometers) NNE of CHL.
• Because of Challis Airport's high elevation of 5,072 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CHL. Combined with a high temperature, this could make CHL a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
• Challis Airport (CHL) currently has only 1 runway.
• The furthest airport from Challis Airport (CHL) is Pierrefonds Airport (ZSE), which is located 10,728 miles (17,265 kilometers) away in Saint-Pierre, Réunion.
• In addition to being known as "Challis Airport", another name for CHL is "LLJ".