Nonstop flight route between Helena, Montana, United States and SeaTac (near Seattle and Tacoma), Washington, United States:

About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 489 miles (or 788 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 relatively short distance between Helena Regional Airport and Seattle–Tacoma International Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Helena Regional Airport (HLN):

• Helena Regional Airport (HLN) has 3 runways.
• 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.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• 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.

Facts about Seattle–Tacoma International Airport (SEA):

• Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.
• The three parallel runways run nearly north–south, west of the passenger terminal, and are 8,500 to 11,900 feet long.
• A new control tower was built beginning in 2001 and opened November 2004, at a cost of $26 million.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• The airport has a Central Terminal building, which was renovated and expanded in 2003.
• Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma 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.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.
• The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
• A 23-acre rental car facility opened on May 17, 2012.
• The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.