Nonstop flight route between Impfondo, Republic of the Congo and Île Sainte-Marie, Madagascar:
Departure Airport:
(1°35'21"N by 18°2'42"E)
Arrival Airport:
(17°5'38"S by 49°48'56"E)
Distance from ION to SMS:
2,520.03 miles (4,055.58 km)
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Jump to:
- About this route
- ION Airport Information
- SMS Airport Information
- Facts about ION
- Facts about SMS
- Map of Nearest Airports to ION
- List of Nearest Airports to ION
- Map of Furthest Airports from ION
- List of Furthest Airports from ION
- Map of Nearest Airports to SMS
- List of Nearest Airports to SMS
- Map of Furthest Airports from SMS
- List of Furthest Airports from SMS
About this route:
A direct, nonstop flight between Impfondo Airport (ION), Impfondo, Republic of the Congo and Sainte Marie Airport (SMS), Île Sainte-Marie, Madagascar would travel a Great Circle distance of 2,520 miles (or 4,056 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 Impfondo Airport and Sainte Marie 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 Impfondo Airport and Sainte Marie Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ION / FCOI |
| Airport Name: | Impfondo Airport |
| Location: | Impfondo, Republic of the Congo |
| GPS Coordinates: | 1°35'21"N by 18°2'42"E |
| Area Served: | Impfondo, Republic of the Congo |
| Elevation: | 1099 feet (335 meters) |
| View all routes: | Routes from ION |
| More Information: | ION Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SMS / FMMS |
| Airport Name: | Sainte Marie Airport |
| Location: | Île Sainte-Marie, Madagascar |
| GPS Coordinates: | 17°5'38"S by 49°48'56"E |
| Area Served: | Sainte Marie, Analanjirofo, Madagascar |
| Airport Type: | Public |
| Elevation: | 7 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SMS |
| More Information: | SMS Maps & Info |
Facts about Impfondo Airport (ION):
- The furthest airport from Impfondo Airport (ION) is Cassidy International Airport (CXI), which is nearly antipodal to Impfondo Airport (meaning Impfondo Airport is almost on the exact opposite side of the Earth from Cassidy International Airport), and is located 12,034 miles (19,367 kilometers) away in Christmas Island, Kiribati.
- The closest airport to Impfondo Airport (ION) is Bétou Airport (BTB), which is located 106 miles (170 kilometers) NNE of ION.
Facts about Sainte Marie Airport (SMS):
- Because of Sainte Marie Airport's relatively low elevation of 7 feet, planes can take off or land at Sainte Marie 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 Sainte Marie Airport (SMS) is Toamasino Airport (TMM), which is located 76 miles (122 kilometers) SSW of SMS.
- The furthest airport from Sainte Marie Airport (SMS) is Guerrero Negro Airport (GUB), which is located 11,161 miles (17,962 kilometers) away in Guerrero Negro, Baja California Sur, Mexico.
- Sainte Marie Airport (SMS) currently has only 1 runway.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 105.69 miles (170.09 km) NNE | Bétou Airport (BTB) | Betou, Republic of the Congo |     |
| 2 | 109.57 miles (176.33 km) S | Mbandaka Airport (MDK) | Mbandaka, Democratic Republic of the Congo | |
| 3 | 123.06 miles (198.05 km) ESE | Basankusu Airport (BSU) | Basankusu, Democratic Republic of the Congo | |
| 4 | 196.82 miles (316.75 km) N | Bangui M'Poko International Airport (BGF) | Bangui, Central African Republic | |
| 5 | 203.10 miles (326.85 km) WSW | Makoua Airport (MKJ) | Makoua, Republic of the Congo | |
| 6 | 205.96 miles (331.47 km) SW | Owando Airport (FTX) | Owando, Republic of the Congo | |
| 7 | 220.12 miles (354.26 km) SSE | Basango Mboliasa Airport (KRZ) | Kiri, Democratic Republic of the Congo | |
| 8 | 234.90 miles (378.04 km) ESE | Boende Airport (BNB) | Boende, Democratic Republic of the Congo | |
| 9 | 239.38 miles (385.24 km) NW | Berbérati Airport (BBT) | Berbérati, Central African Republic | |
| 10 | 241.72 miles (389.00 km) E | Lisala Airport (LIQ) | Lisala, Democratic Republic of the Congo | |
| 11 | 243.54 miles (391.95 km) SW | Oyo Ollombo Airport (OLL) | Oyo, Republic of the Congo, Republic of the Congo | |
| 12 | 244.93 miles (394.17 km) S | Inongo Airport (INO) | Inongo, Democratic Republic of the Congo | |
| 13 | 255.67 miles (411.47 km) N | Bossembélé Airport (BEM) | Bossembélé, Central African Republic | |
| 14 | 258.17 miles (415.49 km) SW | Boundji Airport (BOE) | Boundji, Republic of the Congo | |
| 15 | 268.74 miles (432.49 km) WSW | Kelle Airport (KEE) | Kelle, Republic of the Congo | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,034.00 miles (19,366.80 km) NW | Cassidy International Airport (CXI) | Christmas Island, Kiribati | |
| 2 | 11,825.86 miles (19,031.83 km) S | Manihiki Island Airport (MHX) | Manihiki Island, Cook Islands | |
| 3 | 11,758.70 miles (18,923.75 km) E | Canton Island Airport (CIS) | Canton Island, Kiribati | |
| 4 | 11,426.23 miles (18,388.69 km) SSE | Fitiuta Airport (FTI) | Fiti‘uta, American Samoa, United States | |
| 5 | 11,422.43 miles (18,382.58 km) SSE | Tau Airport (TAV) | Tau, American Samoa | |
| 6 | 11,419.50 miles (18,377.85 km) SSE | Ofu Airport (OFU) | Ofu, American Samoa | |
| 7 | 11,375.96 miles (18,307.79 km) SE | Pago Pago International Airport (PPG) | Pago Pago, American Samoa | |
| 8 | 11,357.64 miles (18,278.31 km) SE | Fagali'i Airport (FGI) | Apia, Samoa | |
| 9 | 11,347.24 miles (18,261.57 km) SE | Faleolo International Airport (APW) | Apia, Upolu Island, Samoa | |
| 10 | 11,340.97 miles (18,251.48 km) SE | Maota (Salelologa) Airport (MXS) | Maota, Samoa | |
| 11 | 11,336.73 miles (18,244.66 km) SE | Asau Airport (AAU) | Asau, Samoa | |
| 12 | 11,217.19 miles (18,052.27 km) SSW | Maupiti Airport (MAU) | Maupiti, Leeward Islands, French Polynesia | |
| 13 | 11,197.81 miles (18,021.08 km) SSW | Bora Bora Airport (BOB) | Bora Bora, French Polynesia | |
| 14 | 11,171.90 miles (17,979.39 km) SE | Wallis Island (WLS) | Wallis and Futuna Islands | |
| 15 | 11,155.81 miles (17,953.50 km) SW | Huahine – Fare Airport (HUH) | Huahine, Society Islands, French Polynesia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 75.51 miles (121.52 km) SSW | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 2 | 109.66 miles (176.48 km) NW | Mandritsara Airport (WMA) | Mandritsara, Madagascar | |
| 3 | 147.27 miles (237.02 km) W | Tsaratanana Airport (TTS) | Tsaratanana, Madagascar. | |
| 4 | 148.54 miles (239.05 km) NNE | Antsirabato Airport (ANM) | Antalaha, Madagascar | |
| 5 | 179.31 miles (288.56 km) NW | Port Bergé Airport (WPB) | Port Bergé, Madagascar | |
| 6 | 193.49 miles (311.40 km) SW | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 7 | 218.14 miles (351.06 km) NW | Analalava Airport (HVA) | Analalava, Madagascar | |
| 8 | 249.90 miles (402.17 km) WNW | Amborovy Airport (MJN) | Mahajanga, Madagascar | |
| 9 | 255.83 miles (411.71 km) NNW | Ambanja Airport (IVA) | Ambanja, Madagascar | |
| 10 | 272.99 miles (439.33 km) WSW | Tsiroanomandidy Airport (WTS) | Tsiroanomandidy, Madagascar | |
| 11 | 275.44 miles (443.27 km) NNW | Ambilobe Airport (AMB) | Ambilobe, Madagascar | |
| 12 | 279.38 miles (449.62 km) W | Ambatomainty Airport (AMY) | Ambatomainty, Madagascar | |
| 13 | 299.34 miles (481.74 km) SSW | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 14 | 302.75 miles (487.22 km) WNW | Soalala Airport (DWB) | Soalala, Madagascar | |
| 15 | 320.40 miles (515.63 km) WSW | Ankavandra Airport (JVA) | Ankavandra, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,160.95 miles (17,961.77 km) NW | Guerrero Negro Airport (GUB) | Guerrero Negro, Baja California Sur, Mexico | |
| 2 | 11,121.21 miles (17,897.80 km) WNW | Ciudad Constitución Airport (CUA) | Ciudad Constitución, Baja California Sur, Mexico | |
| 3 | 11,112.23 miles (17,883.35 km) NW | Ensenada Airport (ESE) | Ensenada, Baja California, Mexico | |
| 4 | 11,103.17 miles (17,868.77 km) NNW | Santa Cruz Island Airport (SZN) | Santa Barbara, California, United States | |
| 5 | 11,101.15 miles (17,865.52 km) NW | Bahía de los Ángeles Airport (BHL) | Bahía de los Ángeles, Baja California, México | |
| 6 | 11,093.48 miles (17,853.19 km) NNW | Catalina AirportBuffalo Springs Airport (CIB) | Avalon, California, United States | |
| 7 | 11,092.50 miles (17,851.61 km) NW | Naval Outlying Landing Field Imperial Beach (NRS) | Imperial Beach, California, United States | |
| 8 | 11,089.23 miles (17,846.34 km) NW | NAS North Island (NZY) | San Diego, California, United States | |
| 9 | 11,088.31 miles (17,844.86 km) NW | Tijuana International Airport (TIJ) | Tijuana, Baja California, Mexico | |
| 10 | 11,087.06 miles (17,842.84 km) NW | Brown Field Municipal Airport (SDM) | San Diego, California, United States | |
| 11 | 11,086.45 miles (17,841.87 km) NW | San Diego International Airport (SAN) | San Diego, California, United States | |
| 12 | 11,082.62 miles (17,835.71 km) NNW | Lompoc Airport (LPC) | Lompoc, California, United States | |
| 13 | 11,081.44 miles (17,833.81 km) WNW | Loreto International Airport (LTO) | Loreto, Baja California Sur, Mexico | |
| 14 | 11,081.30 miles (17,833.57 km) NNW | Vandenberg Air Force Base (VBG) | Lompoc, California, United States | |
| 15 | 11,080.22 miles (17,831.85 km) NW | Montgomery Field (MYF) | San Diego, California, United States | |