Nonstop flight route between Don Muang, Bangkok, Thailand and Helena, Montana, United States:

About this route:

A direct, nonstop flight between Don Mueang International Airport (DMK), Don Muang, Bangkok, Thailand and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 7,792 miles (or 12,540 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 Don Mueang International Airport and Helena Regional 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 Don Mueang International Airport and Helena Regional 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 Don Mueang International Airport (DMK):

• Before the opening of Suvarnabhumi, the airport used the IATA airport code BKK and the name was spelled Don Muang.
• Although initially deserted by commercial carriers upon the opening of the Suvarnabhumi Airport, the higher costs of the new airport to operators as well as safety concerns over cracked runways at the new airport caused many to seek a return to Don Mueang.
• The closest airport to Don Mueang International Airport (DMK) is Suvarnabhumi Airport (BKK), which is located only 18 miles (29 kilometers) SSE of DMK.
• Don Mueang International Airport (DMK) has 2 runways.
• The head office of R Airlines is in Rooms 4326 and 4328 on the fourth floor of the International Terminal of Don Mueang International Airport.
• Don Mueang International Airport has 3 terminals.
• The furthest airport from Don Mueang International Airport (DMK) is Jorge Chávez International Airport (LIM), which is nearly antipodal to Don Mueang International Airport (meaning Don Mueang International Airport is almost on the exact opposite side of the Earth from Jorge Chávez International Airport), and is located 12,235 miles (19,691 kilometers) away in Callao (near Lima), Peru.
• Because of Don Mueang International Airport's relatively low elevation of 9 feet, planes can take off or land at Don Mueang 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.
• There are many BMTA buses routes around the airport.
• In addition to being known as "Don Mueang International Airport", another name for DMK is "ท่าอากาศยานดอนเมือง".

Facts about Helena Regional Airport (HLN):

• The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.
• Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
• Helena Regional Airport (HLN) has 3 runways.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.
• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.