Nonstop flight route between Haiphong, Vietnam and Salmon, Idaho, United States:
Departure Airport:
(20°49'9"N by 106°43'28"E)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from HPH to SMN:
7,213.94 miles (11,609.68 km)
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Jump to:
- About this route
- HPH Airport Information
- SMN Airport Information
- Facts about HPH
- Facts about SMN
- Map of Nearest Airports to HPH
- List of Nearest Airports to HPH
- Map of Furthest Airports from HPH
- List of Furthest Airports from HPH
- Map of Nearest Airports to SMN
- List of Nearest Airports to SMN
- Map of Furthest Airports from SMN
- List of Furthest Airports from SMN
About this route:
A direct, nonstop flight between Cat Bi International Airport (HPH), Haiphong, Vietnam and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 7,214 miles (or 11,610 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 Cat Bi International Airport and Lemhi County 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 Cat Bi International Airport and Lemhi County Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | HPH / VVCI |
| Airport Names: |
|
| Location: | Haiphong, Vietnam |
| GPS Coordinates: | 20°49'9"N by 106°43'28"E |
| Operator/Owner: | Northern Airports Services Company |
| Airport Type: | Public |
| Elevation: | 13 feet (4 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HPH |
| More Information: | HPH Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SMN / KSMN |
| Airport Name: | Lemhi County Airport |
| Location: | Salmon, Idaho, United States |
| GPS Coordinates: | 45°7'26"N by 113°52'53"W |
| Operator/Owner: | Lemhi County |
| Airport Type: | Public |
| Elevation: | 4043 feet (1,232 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SMN |
| More Information: | SMN Maps & Info |
Facts about Cat Bi International Airport (HPH):
- The closest airport to Cat Bi International Airport (HPH) is Nội Bài International Airport (HAN), which is located 65 miles (105 kilometers) WNW of HPH.
- The furthest airport from Cat Bi International Airport (HPH) is Diego Aracena International Airport (IQQ), which is nearly antipodal to Cat Bi International Airport (meaning Cat Bi International Airport is almost on the exact opposite side of the Earth from Diego Aracena International Airport), and is located 12,236 miles (19,692 kilometers) away in Iquique, Chile.
- Because of Cat Bi International Airport's relatively low elevation of 13 feet, planes can take off or land at Cat Bi International 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.
- In addition to being known as "Cat Bi International Airport", another name for HPH is "Sân bay Quốc tế Cát Bi".
- Cat Bi International Airport (HPH) currently has only 1 runway.
Facts about Lemhi County Airport (SMN):
- Lemhi County Airport (SMN) currently has only 1 runway.
- The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
- Because of Lemhi County Airport's high elevation of 4,043 feet, planes must typically fly at a faster airspeed in order to takeoff or land at SMN. Combined with a high temperature, this could make SMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 65.37 miles (105.20 km) WNW | Nội Bài International Airport (HAN) | Hanoi, Vietnam |     |
| 2 | 103.19 miles (166.06 km) SW | Tho Xuan Airport (THD) | Thanh Hoa, Vietnam | |
| 3 | 154.65 miles (248.88 km) NE | Nanning Wuxu International Airport (NNG) | Nanning, Guangxi, China | |
| 4 | 159.36 miles (256.47 km) SSW | Vinh Airport (VII) | Vinh, Nghe An, Vietnam | |
| 5 | 172.84 miles (278.16 km) ENE | Beihai Fucheng Airport (BHY) | Beihai, Guangxi, China | |
| 6 | 200.95 miles (323.40 km) N | Baise Bama Airport (AEB) | Baise, Guangxi, China | |
| 7 | 235.92 miles (379.68 km) E | Zhanjiang Airport (ZHA) | Zhanjiang, Guangdong, China | |
| 8 | 242.88 miles (390.88 km) W | Dien Bien Phu Airport (DIN) | Dien Bien Phu, Vietnam | |
| 9 | 243.62 miles (392.07 km) NW | Wenshan Puzhehei Airport (WNH) | Wenshan, Yunnan, China | |
| 10 | 246.65 miles (396.94 km) SE | Sanya Phoenix International Airport (SYX) | Sanya, Hainan, China | |
| 11 | 249.45 miles (401.45 km) ESE | Haikou Meilan International Airport (HAK) | Haikou, Hainan, China | |
| 12 | 249.60 miles (401.69 km) WSW | Xieng Khouang Airport (XKH) | Xieng Khouang, Laos | |
| 13 | 273.50 miles (440.15 km) SSW | Nakhon Phanom Airport (KOP) | Nakhon Phanom, Thailand | |
| 14 | 280.88 miles (452.04 km) NNE | Hechi Jinchengjiang Airport (HCJ) | Hechi, Guangxi, China | |
| 15 | 289.41 miles (465.76 km) NE | Liuzhou Bailian Airport (LZH) | Liuzhou, Guangxi, China | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,235.84 miles (19,691.63 km) W | Diego Aracena International Airport (IQQ) | Iquique, Chile | |
| 2 | 12,204.67 miles (19,641.46 km) SW | Carolina Airport (CLN) | Carolina, Maranhão, Brazil | |
| 3 | 12,186.88 miles (19,612.83 km) SSW | Ilo Airport (ILQ) | Ilo, Moquegua Region, Peru | |
| 4 | 12,180.52 miles (19,602.59 km) SW | Chacalluta International Airport (ARI) | Arica, Chile | |
| 5 | 12,180.52 miles (19,602.59 km) SW | Chacalluta International Airport (ACM) | Arica, Amazonas, Colombia | |
| 6 | 12,180.47 miles (19,602.51 km) SW | Andrés Sabella Gálvez International Airport (former Cerro Moreno International Airport) (ANF) | Antofagasta, Chile | |
| 7 | 12,133.28 miles (19,526.58 km) WSW | El Loa Airport (CJC) | Calama, Antofagasta Region, Chile | |
| 8 | 12,108.16 miles (19,486.14 km) SSW | Rodríguez Ballón International Airport (AQP) | Arequipa, Peru | |
| 9 | 12,020.13 miles (19,344.48 km) SSW | Chañaral Airport (CNR) | Chañaral, Atacama Region, Chile | |
| 10 | 12,020.08 miles (19,344.39 km) W | Uyuni Joya Andina Airport (UYU) | Uyuni, Potosí, Bolivia | |
| 11 | 12,014.18 miles (19,334.91 km) SSW | Inca Manco Cápac International Airport (JUL) | Juliaca, Peru | |
| 12 | 12,010.02 miles (19,328.20 km) SSE | Maria Reiche Neuman Airport (NZC) | Nazca, Ica Region, Peru | |
| 13 | 11,997.09 miles (19,307.40 km) SSW | Ricardo García Posada Airport El Salvador Bajo Airport (ESR) | El Salvador, Chile | |
| 14 | 11,990.54 miles (19,296.86 km) SW | El Alto International Airport (LPB) | La Paz, Bolivia | |
| 15 | 11,954.26 miles (19,238.47 km) SSW | Chamonate Airfield (CPO) | Copiapó, Atacama Region, Chile | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 44.63 miles (71.83 km) SSW | Challis Airport (CHL) | Challis, Idaho, United States | |
| 2 | 65.34 miles (105.16 km) E | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 3 | 88.21 miles (141.95 km) NE | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 4 | 105.26 miles (169.40 km) SE | Dubois Municipal Airport (DBS) | Dubois, Idaho, United States | |
| 5 | 109.67 miles (176.50 km) W | McCall Municipal Airport (MYL) | McCall, Idaho, United States | |
| 6 | 113.79 miles (183.12 km) S | Friedman Memorial Airport (SUN) | Hailey, Idaho, United States | |
| 7 | 124.26 miles (199.97 km) N | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 137.25 miles (220.89 km) NE | Helena Regional Airport (HLN) | Helena, Montana, United States | |
| 9 | 138.54 miles (222.96 km) ESE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 10 | 139.78 miles (224.96 km) ENE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 11 | 142.78 miles (229.79 km) SE | Idaho Falls Regional Airport (IDA) | Idaho Falls, Idaho, United States | |
| 12 | 158.08 miles (254.41 km) SW | Boise Airport (BOI) | Boise, Idaho, United States | |
| 13 | 165.78 miles (266.79 km) SSE | Pocatello Regional Airport (PIH) | Pocatello, Idaho, United States | |
| 14 | 171.20 miles (275.52 km) ENE | Mission Field (LVM) | Livingston, Montana, United States | |
| 15 | 171.98 miles (276.77 km) WSW | Ontario Municipal Airport (ONO) | Ontario, Oregon, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,685.72 miles (17,196.96 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,683.63 miles (17,193.59 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,677.06 miles (17,183.01 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 4 | 10,664.05 miles (17,162.08 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,656.97 miles (17,150.68 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,588.72 miles (17,040.86 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,500.49 miles (16,898.86 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,477.32 miles (16,861.57 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,388.70 miles (16,718.95 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,384.71 miles (16,712.53 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,371.80 miles (16,691.75 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,336.41 miles (16,634.79 km) SSE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,326.44 miles (16,618.75 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,311.65 miles (16,594.95 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,289.81 miles (16,559.81 km) SE | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |