Nonstop flight route between Camp Roberts, San Luis Obispo County, California, United States and Denis Island, Seychelles:
Departure Airport:
(35°48'53"N by 120°44'38"W)
Arrival Airport:
(3°48'1"S by 55°39'52"E)
Distance from SYL to DEI:
10,212.96 miles (16,436.12 km)
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Jump to:
- About this route
- SYL Airport Information
- DEI Airport Information
- Facts about SYL
- Facts about DEI
- Map of Nearest Airports to SYL
- List of Nearest Airports to SYL
- Map of Furthest Airports from SYL
- List of Furthest Airports from SYL
- Map of Nearest Airports to DEI
- List of Nearest Airports to DEI
- Map of Furthest Airports from DEI
- List of Furthest Airports from DEI
About this route:
A direct, nonstop flight between Roberts Army Heliport (SYL), Camp Roberts, San Luis Obispo County, California, United States and Denis Island Airport (DEI), Denis Island, Seychelles would travel a Great Circle distance of 10,213 miles (or 16,436 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 Roberts Army Heliport and Denis Island 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 Roberts Army Heliport and Denis Island Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SYL / KSYL |
| Airport Name: | Roberts Army Heliport |
| Location: | Camp Roberts, San Luis Obispo County, California, United States |
| GPS Coordinates: | 35°48'53"N by 120°44'38"W |
| Operator/Owner: | United States Army |
| Airport Type: | Military |
| Elevation: | 630 feet (192 meters) |
| View all routes: | Routes from SYL |
| More Information: | SYL Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | DEI / FSSD |
| Airport Name: | Denis Island Airport |
| Location: | Denis Island, Seychelles |
| GPS Coordinates: | 3°48'1"S by 55°39'52"E |
| Operator/Owner: | Denis Island |
| Airport Type: | Private |
| Elevation: | 10 feet (3 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from DEI |
| More Information: | DEI Maps & Info |
Facts about Roberts Army Heliport (SYL):
- The closest airport to Roberts Army Heliport (SYL) is Paso Robles Municipal AirportEstrella Army Airfield (PRB), which is located only 12 miles (19 kilometers) SE of SYL.
- The furthest airport from Roberts Army Heliport (SYL) is Pierrefonds Airport (ZSE), which is located 11,409 miles (18,361 kilometers) away in Saint-Pierre, Réunion.
- Because of Roberts Army Heliport's relatively low elevation of 630 feet, planes can take off or land at Roberts Army Heliport 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.
Facts about Denis Island Airport (DEI):
- Denis Island Airport (DEI) currently has only 1 runway.
- The furthest airport from Denis Island Airport (DEI) is Atuona Airport (AUQ), which is located 11,058 miles (17,797 kilometers) away in Atuona, Marquesas Islands, French Polynesia.
- Because of Denis Island Airport's relatively low elevation of 10 feet, planes can take off or land at Denis Island 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 Denis Island Airport (DEI) is Bird Island Airport (BDI), which is located 32 miles (51 kilometers) W of DEI.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11.81 miles (19.01 km) SE | Paso Robles Municipal AirportEstrella Army Airfield (PRB) | Paso Robles, California, United States |     |
| 2 | 33.78 miles (54.36 km) S | O'Sullivan Army Heliport (CSL) | Camp San Luis Obispo, California, United States | |
| 3 | 34.80 miles (56.01 km) NE | New Coalinga Municipal Airport (CLG) | Coalinga, California, United States | |
| 4 | 35.52 miles (57.16 km) NW | Mesa Del Rey Airport (KIC) | King City, California, United States | |
| 5 | 40.35 miles (64.94 km) S | San Luis Obispo County Regional Airport (SBP) | San Luis Obispo, California, United States | |
| 6 | 56.90 miles (91.57 km) NE | Naval Air Station Lemoore (NLC) | Lemoore, California, United States | |
| 7 | 65.32 miles (105.13 km) SSE | Santa Maria Public Airport (SMX) | Santa Maria, California, United States | |
| 8 | 67.27 miles (108.27 km) ENE | Corcoran Airport (CRO) | Corcoran, California, United States | |
| 9 | 75.45 miles (121.42 km) S | Vandenberg Air Force Base (VBG) | Lompoc, California, United States | |
| 10 | 75.77 miles (121.94 km) NW | Salinas Municipal AirportSalinas Army Air Base (SNS) | Salinas, California, United States | |
| 11 | 80.93 miles (130.25 km) S | Lompoc Airport (LPC) | Lompoc, California, United States | |
| 12 | 81.24 miles (130.75 km) NW | Monterey Regional Airport (MRY) | Monterey, California, United States | |
| 13 | 81.63 miles (131.37 km) NE | Fresno Chandler Executive AirportChandler Municipal Airport (Old) (FCH) | Fresno, California, United States | |
| 14 | 82.67 miles (133.05 km) ENE | Mefford Field (TLR) | Tulare, California, United States | |
| 15 | 83.09 miles (133.73 km) ENE | Visalia Municipal AirportVisalia Army Airfield (VIS) | Visalia, California, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,409.05 miles (18,361.04 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 2 | 11,393.86 miles (18,336.60 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 3 | 11,381.07 miles (18,316.01 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 4 | 11,369.53 miles (18,297.45 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 11,299.65 miles (18,184.98 km) SSW | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 6 | 11,281.26 miles (18,155.39 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 11,231.62 miles (18,075.50 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 11,202.77 miles (18,029.06 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 11,094.61 miles (17,855.00 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 10 | 11,087.59 miles (17,843.70 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 11 | 11,073.56 miles (17,821.13 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 11,072.95 miles (17,820.14 km) SSE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 11,059.10 miles (17,797.85 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 11,035.08 miles (17,759.20 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 11,019.51 miles (17,734.15 km) SSE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 31.89 miles (51.32 km) W | Bird Island Airport (BDI) | Bird Island, Seychelles | |
| 2 | 35.90 miles (57.78 km) S | Praslin Island Airport (PRI) | Praslin Island, Seychelles | |
| 3 | 57.52 miles (92.56 km) SSE | Frégate Island Airport (FRK) | Frégate Island, Seychelles | |
| 4 | 61.18 miles (98.46 km) S | Seychelles International Airport (SEZ) | Mahé, Seychelles | |
| 5 | 190.69 miles (306.89 km) SW | Desroches Island Airport (DES) | Desroches Island, Seychelles | |
| 6 | 733.87 miles (1,181.05 km) SW | Arrachart Airport (DIE) | Antsiranana, Madagascar | |
| 7 | 792.72 miles (1,275.76 km) SW | Ambilobe Airport (AMB) | Ambilobe, Madagascar | |
| 8 | 801.60 miles (1,290.05 km) NW | Obbia Airport (CMO) | Obbia, Somalia | |
| 9 | 820.46 miles (1,320.40 km) WNW | Aden Adde International Airport (MGQ) | Mogadishu, Somalia | |
| 10 | 838.87 miles (1,350.02 km) SW | Ambanja Airport (IVA) | Ambanja, Madagascar | |
| 11 | 854.98 miles (1,375.95 km) SSW | Antsirabato Airport (ANM) | Antalaha, Madagascar | |
| 12 | 921.55 miles (1,483.09 km) SW | Analalava Airport (HVA) | Analalava, Madagascar | |
| 13 | 924.73 miles (1,488.21 km) NW | Abdullahi Yusuf International Airport (GLK) | Galcaio, Somalia | |
| 14 | 942.40 miles (1,516.64 km) WNW | Kismayo Airport (KMU) | Kisimayu, Somalia | |
| 15 | 943.34 miles (1,518.15 km) SW | Dzaoudzi Pamandzi International Airport (DZA) | Dzaoudzi, Mayotte | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,058.49 miles (17,796.87 km) SE | Atuona Airport (AUQ) | Atuona, Marquesas Islands, French Polynesia | |
| 2 | 10,781.23 miles (17,350.67 km) NW | Los Cabos International Airport (SJD) | Los Cabos, Mexico | |
| 3 | 10,754.90 miles (17,308.29 km) NNW | Manuel Márquez de León International Airport (LAP) | La Paz, Baja California Sur, Mexico | |
| 4 | 10,742.47 miles (17,288.28 km) NNW | Ciudad Constitución Airport (CUA) | Ciudad Constitución, Baja California Sur, Mexico | |
| 5 | 10,732.53 miles (17,272.29 km) NW | Playa de Oro International Airport (ZLO) | Manzanillo, Colima, Mexico | |
| 6 | 10,703.08 miles (17,224.90 km) NW | Lic. Gustavo Díaz Ordaz International Airport (PVR) | Puerto Vallarta, Jalisco, Mexico | |
| 7 | 10,682.85 miles (17,192.33 km) SSE | Pukarua Airport (PUK) | Pukarua, Tuamotus, French Polynesia | |
| 8 | 10,678.75 miles (17,185.74 km) NNW | Loreto International Airport (LTO) | Loreto, Baja California Sur, Mexico | |
| 9 | 10,675.03 miles (17,179.75 km) NW | Licenciado Miguel de la Madrid Airport (CLQ) | Colima, Colima, Mexico | |
| 10 | 10,671.03 miles (17,173.31 km) SE | Fangatau Airport (FGU) | Fangatau, French Polynesia | |
| 11 | 10,649.92 miles (17,139.34 km) NW | Amado Nervo International Airport (TPQ) | Tepic, Nayarit, Mexico | |
| 12 | 10,647.88 miles (17,136.05 km) NW | Lázaro Cárdenas Airport (LZC) | Lázaro Cárdenas, Michoacán, Mexico | |
| 13 | 10,635.05 miles (17,115.42 km) NW | General Rafael Buelna International Airport (MZT) | Mazatlán, Sinaloa, Mexico | |
| 14 | 10,630.62 miles (17,108.28 km) NNW | Guerrero Negro Airport (GUB) | Guerrero Negro, Baja California Sur, Mexico | |
| 15 | 10,618.25 miles (17,088.37 km) WNW | Ixtapa-Zihuatanejo International Airport (ZIH) | Zihuatanejo, Guerrero, Mexico | |