Nonstop flight route between Helena, Montana, United States and San Francisco, California, United States:

About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and San Francisco International Airport (SFO), San Francisco, California, United States would travel a Great Circle distance of 817 miles (or 1,314 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 San Francisco 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):

• 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.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
• Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
• Helena Regional Airport (HLN) has 3 runways.

Facts about San Francisco International Airport (SFO):

• The airport opened on May 7, 1927, on 150 acres of cow pasture.
• The furthest airport from San Francisco International Airport (SFO) is Tôlanaro Airport (FTU), which is located 11,365 miles (18,290 kilometers) away in Tôlanaro, Madagascar.
• The airport closed following the Loma Prieta earthquake on October 17, 1989, reopening the following morning.
• The first international nonstops were ANA/BCPA DC-4s to Vancouver in 1946-47.
• Domestic flights on JetBlue Airways, Sun Country Airlines, and Hawaiian Airlines also operate from the International Terminal at boarding area A.
• Because of San Francisco International Airport's relatively low elevation of 13 feet, planes can take off or land at San Francisco 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.
• San Francisco International Airport (SFO) has 4 runways.
• On July 14, 2008, SFO was voted Best International Airport in North America for 2008 in the World Airports Survey by Skytrax.
• The closest airport to San Francisco International Airport (SFO) is Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF), which is located only 10 miles (16 kilometers) SW of SFO.
• A long-planned extension of the Bay Area Rapid Transit system to the airport opened on June 22, 2003, allowing passengers to board BART trains at the international terminal to San Francisco or the East Bay.
• Terminal 2, formerly known as the "Central Terminal," opened in 1954 as the main airport terminal.
• San Francisco International Airport handled 44,477,209 passengers last year.