Nonstop flight route between Sofia, Bulgaria and Helena, Montana, United States:
Departure Airport:
(42°41'42"N by 23°24'29"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from SOF to HLN:
5,689.23 miles (9,155.90 km)
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Jump to:
- About this route
- SOF Airport Information
- HLN Airport Information
- Facts about SOF
- Facts about HLN
- Map of Nearest Airports to SOF
- List of Nearest Airports to SOF
- Map of Furthest Airports from SOF
- List of Furthest Airports from SOF
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
About this route:
A direct, nonstop flight between Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 5,689 miles (or 9,156 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 Sofia Airport Vrazhdebna 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 Sofia Airport Vrazhdebna and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SOF / LBSF |
| Airport Names: |
|
| Location: | Sofia, Bulgaria |
| GPS Coordinates: | 42°41'42"N by 23°24'29"E |
| Area Served: | Sofia, Bulgaria |
| Operator/Owner: | Sofia Airport EAD |
| Airport Type: | Public |
| Elevation: | 1742 feet (531 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SOF |
| More Information: | SOF Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | HLN / KHLN |
| Airport Names: |
|
| Location: | Helena, Montana, United States |
| GPS Coordinates: | 46°36'24"N by 111°58'58"W |
| Area Served: | Helena, Montana |
| Operator/Owner: | Helena Regional Airport Authority |
| Airport Type: | Public |
| Elevation: | 3877 feet (1,182 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from HLN |
| More Information: | HLN Maps & Info |
Facts about Sofia Airport Vrazhdebna (SOF):
- The infrastructure surrounding the building was expected to be completed in 2007.
- The new tower is an extremely important facility for both ATC and the airport because it is related to the safety and security of flights, explained by the transport department.
- Service life of the new airport control tower will be more than 40 years and is designed to serve the airport with a possible extension.
- The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.
- Total cost of the project was planned at 200 million euros.
- The airport was initially built in the late 1930s on a site 6.3 km by road then.
- Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.
- In 2004 Strabag demanded an additional 6 million euro due to rising steel prices.
- The furthest airport from Sofia Airport Vrazhdebna (SOF) is Chatham Islands (CHT), which is located 11,437 miles (18,405 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Sofia Airport Vrazhdebna handled 350,432 passengers last year.
- In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport is a public airport two miles northeast of Helena, in Lewis and Clark County, Montana.
- 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.
- Helena Regional Airport (HLN) has 3 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 86.04 miles (138.47 km) ESE | Plovdiv Airport (PDV) | Plovdiv, Bulgaria |     |
| 2 | 90.21 miles (145.17 km) WNW | Niš Constantine the Great International Airport (INI) | Niš, Serbia | |
| 3 | 104.17 miles (167.64 km) WSW | Skopje Airport (SKP) | Skopje, Macedonia | |
| 4 | 114.70 miles (184.58 km) NNE | Craiova International Airport (CRA) | Craiova, Romania | |
| 5 | 116.49 miles (187.47 km) E | Stara Zagora Airport (SZR) | Stara Zagora, Bulgaria | |
| 6 | 120.78 miles (194.38 km) ENE | Gorna Oryahovitsa Airport (GOZ) | Gorna Oryahovitsa, Bulgaria | |
| 7 | 120.89 miles (194.55 km) W | Pristina International Airport "Adem Jashari" (PRN) | Pristina, Kosovo | |
| 8 | 121.98 miles (196.31 km) ESE | Haskovo Malevo Airport (HKV) | Haskovo, Bulgaria | |
| 9 | 137.99 miles (222.08 km) SSE | Kavala International Airport "Alexander The Great" (KVA) | Kavala, Greece | |
| 10 | 150.23 miles (241.78 km) ENE | Ruse Airport (ROU) | Rousse, Bulgaria | |
| 11 | 150.69 miles (242.52 km) E | Bezmer Air Base (JAM) | Yambol (Jambol), Bulgaria | |
| 12 | 151.99 miles (244.60 km) S | Thessaloniki International Airport "Makedonia" (SKG) | Thessaloniki, Greece | |
| 13 | 172.42 miles (277.48 km) SW | Ohrid Airport (OHD) | Ohrid, Republic of Macedonia | |
| 14 | 180.14 miles (289.91 km) W | Dolac Airport (IVG) | Berane, Montenegro | |
| 15 | 182.69 miles (294.02 km) SE | Alexandroupolis International Airport (AXD) | Alexandroupolis, Greece | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,436.55 miles (18,405.29 km) E | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,080.97 miles (17,833.04 km) E | Gisborne Airport (GIS) | Gisborne, New Zealand | |
| 3 | 11,042.80 miles (17,771.62 km) E | Hawke's Bay Airport (NPE) | Napier, New Zealand | |
| 4 | 11,008.76 miles (17,716.84 km) E | Whakatane Airport (WHK) | Whakatane, New Zealand | |
| 5 | 11,008.49 miles (17,716.41 km) E | Hood Aerodrome (MRO) | Masterton, New Zealand | |
| 6 | 11,004.83 miles (17,710.51 km) SSW | Rurutu Airport (RUR) | Rurutu, French Polynesia | |
| 7 | 10,997.71 miles (17,699.06 km) S | Mangaia Island Airport (MGS) | Mangaia Island, Cook Islands | |
| 8 | 10,996.07 miles (17,696.41 km) E | Palmerston North Airport (PMR) | Palmerston North, New Zealand | |
| 9 | 10,986.67 miles (17,681.28 km) E | Taupo AirportTe Papa Waka Rererangi o Taupō (TUO) | Taupo, New Zealand | |
| 10 | 10,983.29 miles (17,675.84 km) E | Rotorua International Airport (ROT) | Rotorua, New Zealand | |
| 11 | 10,974.71 miles (17,662.04 km) E | Kapiti Coast Airport (PPQ) | Paraparaumu Beach, New Zealand | |
| 12 | 10,972.38 miles (17,658.28 km) E | Wellington International Airport (WLG) | Wellington, New Zealand | |
| 13 | 10,966.07 miles (17,648.14 km) E | Tauranga Airport (TRG) | Tauranga, New Zealand | |
| 14 | 10,959.16 miles (17,637.01 km) E | Wanganui Airport (WAG) | Wanganui, New Zealand | |
| 15 | 10,944.51 miles (17,613.43 km) E | Matamata Airport (MTA) | Matamata, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 51.31 miles (82.58 km) SSW | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 2 | 67.05 miles (107.90 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 3 | 69.72 miles (112.21 km) SE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 72.47 miles (116.63 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 5 | 96.56 miles (155.40 km) SE | Mission Field (LVM) | Livingston, Montana, United States | |
| 6 | 97.30 miles (156.59 km) SSW | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 7 | 102.03 miles (164.20 km) WNW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 122.80 miles (197.63 km) ENE | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 9 | 133.72 miles (215.20 km) N | Shelby Airport (SBX) | Shelby, Montana, United States | |
| 10 | 137.25 miles (220.89 km) SW | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 11 | 138.97 miles (223.65 km) SSE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 12 | 139.51 miles (224.52 km) N | Cut Bank Municipal AirportCut Bank Army Air Field (CTB) | Cut Bank, Montana, United States | |
| 13 | 158.54 miles (255.14 km) NW | Glacier Park International Airport (FCA) | Kalispell, Montana, United States | |
| 14 | 163.70 miles (263.45 km) E | Roundup Airport (RPX) | Roundup, Montana, United States | |
| 15 | 169.14 miles (272.20 km) NE | Havre City-County Airport (HVR) | Havre, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,563.08 miles (16,999.59 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,552.15 miles (16,981.99 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,548.64 miles (16,976.36 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 4 | 10,536.59 miles (16,956.96 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,525.82 miles (16,939.62 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,452.26 miles (16,821.24 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,363.52 miles (16,678.43 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,340.10 miles (16,640.74 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,252.07 miles (16,499.06 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,247.66 miles (16,491.97 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,235.05 miles (16,471.68 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,200.52 miles (16,416.11 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,189.58 miles (16,398.51 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,174.40 miles (16,374.07 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,162.80 miles (16,355.40 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |