Nonstop flight route between Helena, Montana, United States and San Diego / El Cajon, California, United States:
Departure Airport:
(46°36'24"N by 111°58'58"W)
Arrival Airport:
(32°49'33"N by 116°58'20"W)
Distance from HLN to SEE:
987.85 miles (1,589.78 km)
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Jump to:
- About this route
- HLN Airport Information
- SEE Airport Information
- Facts about HLN
- Facts about SEE
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
- Map of Nearest Airports to SEE
- List of Nearest Airports to SEE
- Map of Furthest Airports from SEE
- List of Furthest Airports from SEE
About this route:
A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and Gillespie Field (SEE), San Diego / El Cajon, California, United States would travel a Great Circle distance of 988 miles (or 1,590 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 Gillespie Field, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
| IATA / ICAO Codes: | SEE / KSEE |
| Airport Name: | Gillespie Field |
| Location: | San Diego / El Cajon, California, United States |
| GPS Coordinates: | 32°49'33"N by 116°58'20"W |
| Area Served: | San Diego, California |
| Operator/Owner: | County of San Diego |
| Airport Type: | Public |
| Elevation: | 388 feet (118 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from SEE |
| More Information: | SEE Maps & Info |
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 (HLN) has 3 runways.
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- 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.
Facts about Gillespie Field (SEE):
- Gillespie Field (SEE) has 3 runways.
- The furthest airport from Gillespie Field (SEE) is Sir Gaëtan Duval Airport (RRG), which is located 11,534 miles (18,562 kilometers) away in Rodrigues Island, Mauritius.
- The closest airport to Gillespie Field (SEE) is Montgomery Field (MYF), which is located only 10 miles (16 kilometers) W of SEE.
- Because of Gillespie Field's relatively low elevation of 388 feet, planes can take off or land at Gillespie Field 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.
- In 1942 the United States Marine Corps chose a 688-acre site east of San Diego for parachute training for the newly forming Parachute battalions.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 9.72 miles (15.64 km) W | Montgomery Field (MYF) | San Diego, California, United States | |
| 2 | 10.23 miles (16.47 km) WNW | MCAS Miramar, (NKX) | San Diego, California, United States | |
| 3 | 14.14 miles (22.76 km) WSW | San Diego International Airport (SAN) | San Diego, California, United States | |
| 4 | 16.61 miles (26.73 km) WSW | NAS North Island (NZY) | San Diego, California, United States | |
| 5 | 17.55 miles (28.24 km) S | Brown Field Municipal Airport (SDM) | San Diego, California, United States | |
| 6 | 19.71 miles (31.72 km) S | Tijuana International Airport (TIJ) | Tijuana, Baja California, Mexico | |
| 7 | 19.88 miles (31.99 km) SSW | Naval Outlying Landing Field Imperial Beach (NRS) | Imperial Beach, California, United States | |
| 8 | 27.45 miles (44.18 km) NW | McClellan–Palomar Airport (CLD) | Carlsbad, California, United States | |
| 9 | 34.86 miles (56.10 km) NW | Bob Maxwell Field (Oceanside Municipal Airport) (OCN) | Oceanside, California, United States | |
| 10 | 48.14 miles (77.47 km) NE | Borrego Valley Airport (BXS) | Borrego Springs, California, United States | |
| 11 | 62.79 miles (101.05 km) N | Hemet-Ryan AirportRyan Field (HMT) | Hemet, California, United States | |
| 12 | 65.67 miles (105.69 km) ENE | Salton Sea Airport (SAS) | Salton City, California, United States | |
| 13 | 72.57 miles (116.79 km) NE | Jacqueline Cochran Regional Airport (TRM) | Palm Springs, California, United States | |
| 14 | 73.28 miles (117.94 km) NW | MCAS El Toro (NZJ) | Santa Ana, California, United States | |
| 15 | 74.37 miles (119.69 km) NNE | Palm Springs International AirportPalm Springs Army Airfield (PSP) | Palm Springs, California, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,533.61 miles (18,561.50 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 11,519.32 miles (18,538.50 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 11,515.29 miles (18,532.01 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 11,491.78 miles (18,494.18 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 11,327.83 miles (18,230.33 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 11,230.77 miles (18,074.13 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 11,197.16 miles (18,020.04 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 8 | 11,183.99 miles (17,998.84 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 11,113.93 miles (17,886.08 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 11,073.43 miles (17,820.92 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 11 | 11,070.84 miles (17,816.75 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 12 | 11,045.72 miles (17,776.32 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 13 | 11,021.11 miles (17,736.72 km) ESE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 14 | 11,016.85 miles (17,729.86 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 11,011.97 miles (17,722.00 km) ESE | Morombe Airport (MXM) | Morombe, Madagascar | |