Nonstop flight route between Key Largo, Florida, United States and Helena, Montana, United States:
Departure Airport:
(25°19'13"N by 80°16'41"W)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from OCA to HLN:
2,276.92 miles (3,664.33 km)
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Jump to:
- About this route
- OCA Airport Information
- HLN Airport Information
- Facts about OCA
- Facts about HLN
- Map of Nearest Airports to OCA
- List of Nearest Airports to OCA
- Map of Furthest Airports from OCA
- List of Furthest Airports from OCA
- 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 Ocean Reef Club Airport (OCA), Key Largo, Florida, United States and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 2,277 miles (or 3,664 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 Ocean Reef Club Airport and Helena Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | OCA / |
| Airport Names: |
|
| Location: | Key Largo, Florida, United States |
| GPS Coordinates: | 25°19'13"N by 80°16'41"W |
| Area Served: | Key Largo, Florida |
| Operator/Owner: | Ocean Reef Club |
| Airport Type: | Private use |
| Elevation: | 8 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from OCA |
| More Information: | OCA 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 Ocean Reef Club Airport (OCA):
- The furthest airport from Ocean Reef Club Airport (OCA) is Shark Bay Airport (MJK), which is located 11,573 miles (18,625 kilometers) away in Monkey Mia, Western Australia, Australia.
- Ocean Reef Club Airport (OCA) currently has only 1 runway.
- Because of Ocean Reef Club Airport's relatively low elevation of 8 feet, planes can take off or land at Ocean Reef Club 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.
- The closest airport to Ocean Reef Club Airport (OCA) is Homestead Air Reserve Base (HST), which is located only 13 miles (21 kilometers) NNW of OCA.
- In addition to being known as "Ocean Reef Club Airport", another name for OCA is "07FA".
Facts about Helena Regional Airport (HLN):
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- Helena Regional Airport (HLN) has 3 runways.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 13.34 miles (21.47 km) NNW | Homestead Air Reserve Base (HST) | Homestead, Florida, United States |     |
| 2 | 24.59 miles (39.58 km) NNW | Kendall-Tamiami Executive Airport (TMB) | Miami, Florida, United States | |
| 3 | 32.36 miles (52.07 km) NNE | Miami Seaplane Base (MPB) | Watson Island, Miami-Dade County, Florida, United States | |
| 4 | 32.69 miles (52.61 km) N | Miami International Airport (MIA) | Miami, Florida, United States | |
| 5 | 40.57 miles (65.30 km) N | Opa-locka Executive Airport (OPF) | Miami, Florida, United States | |
| 6 | 47.10 miles (75.80 km) N | North Perry Airport (HWO) | Hollywood, Florida, United States | |
| 7 | 52.56 miles (84.58 km) N | Fort Lauderdale–Hollywood International Airport (FLL) | Fort Lauderdale / Hollywood, Florida, United States | |
| 8 | 53.71 miles (86.44 km) NW | Dade-Collier Training and Transition Airport (TNT) | Miami, Florida, United States | |
| 9 | 60.96 miles (98.10 km) N | Fort Lauderdale Executive Airport (FXE) | Fort Lauderdale, Florida, United States | |
| 10 | 63.47 miles (102.14 km) SW | Florida Keys Marathon Airport (MTH) | Marathon, Florida, United States | |
| 11 | 64.61 miles (103.98 km) ENE | Cat Cay Airport (CXY) | Cat Cay, Bimini Islands, Bahamas | |
| 12 | 64.88 miles (104.42 km) N | Pompano Beach Airpark (PPM) | Pompano Beach, Florida, United States | |
| 13 | 68.43 miles (110.13 km) ENE | South Bimini Airport (BIM) | Bimini, Bahamas | |
| 14 | 73.89 miles (118.91 km) N | Boca Raton Airport (BCT) | Boca Raton, Florida, United States | |
| 15 | 88.76 miles (142.84 km) N | Palm Beach County Park Airport (LNA) | West Palm Beach, Florida, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,573.03 miles (18,624.94 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 2 | 11,563.80 miles (18,610.08 km) W | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 3 | 11,523.66 miles (18,545.48 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 4 | 11,510.10 miles (18,523.66 km) SSE | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 5 | 11,504.29 miles (18,514.31 km) W | RAAF Learmonth (LEA) | Exmouth, Western Australia, Australia | |
| 6 | 11,484.72 miles (18,482.82 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 7 | 11,440.20 miles (18,411.17 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 8 | 11,439.58 miles (18,410.18 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 11,401.38 miles (18,348.70 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 10 | 11,394.43 miles (18,337.51 km) WSW | Barrow Island Airport (BWB) | Barrow Island, Western Australia, Australia | |
| 11 | 11,373.90 miles (18,304.47 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 12 | 11,353.00 miles (18,270.84 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 13 | 11,352.23 miles (18,269.60 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 14 | 11,340.18 miles (18,250.21 km) SW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 15 | 11,337.52 miles (18,245.92 km) SSW | Christmas Island Airport (XCH) | Christmas Island, Australia | |
| 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 | |