Nonstop flight route between Mokuleia, Hawaii, United States and Sidney, Montana, United States:
Departure Airport:
(21°34'45"N by 158°11'49"W)
Arrival Airport:
(47°42'24"N by 104°11'32"W)
Distance from HDH to SDY:
3,469.93 miles (5,584.30 km)
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Jump to:
- About this route
- HDH Airport Information
- SDY Airport Information
- Facts about HDH
- Facts about SDY
- Map of Nearest Airports to HDH
- List of Nearest Airports to HDH
- Map of Furthest Airports from HDH
- List of Furthest Airports from HDH
- Map of Nearest Airports to SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
About this route:
A direct, nonstop flight between Dillingham Airfield (HDH), Mokuleia, Hawaii, United States and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 3,470 miles (or 5,584 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 Dillingham Airfield and Sidney-Richland Municipal 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 Dillingham Airfield and Sidney-Richland Municipal Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | HDH / PHDH |
| Airport Name: | Dillingham Airfield |
| Location: | Mokuleia, Hawaii, United States |
| GPS Coordinates: | 21°34'45"N by 158°11'49"W |
| Operator/Owner: | U.S. Army |
| Airport Type: | Public / Military |
| Elevation: | 14 feet (4 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HDH |
| More Information: | HDH Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SDY / KSDY |
| Airport Name: | Sidney-Richland Municipal Airport |
| Location: | Sidney, Montana, United States |
| GPS Coordinates: | 47°42'24"N by 104°11'32"W |
| Area Served: | Sidney, Montana |
| Operator/Owner: | Sidney Richland Airport Authority |
| Airport Type: | Public |
| Elevation: | 1985 feet (605 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SDY |
| More Information: | SDY Maps & Info |
Facts about Dillingham Airfield (HDH):
- The furthest airport from Dillingham Airfield (HDH) is Ghanzi Airport (GNZ), which is nearly antipodal to Dillingham Airfield (meaning Dillingham Airfield is almost on the exact opposite side of the Earth from Ghanzi Airport), and is located 12,425 miles (19,995 kilometers) away in Ghanzi, Botswana.
- In 1962, the State of Hawaii leased Dillingham for general aviation use.
- Because of Dillingham Airfield's relatively low elevation of 14 feet, planes can take off or land at Dillingham Airfield 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.
- Dillingham Airfield (HDH) currently has only 1 runway.
- The closest airport to Dillingham Airfield (HDH) is Wheeler AAF (HHI), which is located only 12 miles (19 kilometers) ESE of HDH.
- A communications station called Camp Kawaihapai was established here in 1922 on 67 acres along the Oahu Railway and Land Company line.
Facts about Sidney-Richland Municipal Airport (SDY):
- The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
- The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
- As per the Federal Aviation Administration, this airport had 2,031 passenger boardings in calendar year 2008, 2,766 in 2009, and 3,659 in 2010.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.05 miles (19.40 km) ESE | Wheeler AAF (HHI) | Wahiawa, Hawaii, United States |     |
| 2 | 20.50 miles (33.00 km) SSE | Kalaeloa Airport (NAX) | Kapolei, Hawaii, United States | |
| 3 | 25.24 miles (40.61 km) SE | Hickam Field (HIK) | Honolulu, Hawaii, United States | |
| 4 | 25.24 miles (40.61 km) SE | Honolulu International Airport (HNL) | Honolulu, Hawaii, United States | |
| 5 | 76.72 miles (123.47 km) ESE | Molokai Airport (MKK) | Kaunakakai, Hawaii, United States | |
| 6 | 78.21 miles (125.87 km) WNW | Lihue Airport (LIH) | Lihue, Hawaii, United States | |
| 7 | 82.73 miles (133.14 km) ESE | Kalaupapa Airport (LUP) | Kalaupapa, Hawaii, United States | |
| 8 | 91.09 miles (146.60 km) WNW | Princeville Airport (HPV) | Hanalei, Hawaii, United States | |
| 9 | 92.85 miles (149.43 km) WNW | Port Allen Airport (PAK) | Hanapepe, Hawaii, United States | |
| 10 | 97.21 miles (156.45 km) SE | Lanai Airport (LNY) | Lanai City, Hawaii, United States | |
| 11 | 106.36 miles (171.18 km) WNW | PMRF Barking Sands (BKH) | Kekaha, Hawaii, United States | |
| 12 | 106.98 miles (172.16 km) ESE | Kapalua Airport (JHM) | Lahaina, Hawaii, United States | |
| 13 | 123.11 miles (198.13 km) ESE | Kahului Airport (OGG) | Kahului, Hawaii, United States | |
| 14 | 150.69 miles (242.51 km) ESE | Hana Airport (HNM) | Hana, Hawaii, United States | |
| 15 | 176.05 miles (283.33 km) ESE | Upolu Airport (UPP) | Hawi, Hawaii, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,424.59 miles (19,995.40 km) SE | Ghanzi Airport (GNZ) | Ghanzi, Botswana | |
| 2 | 12,283.86 miles (19,768.90 km) SW | Maun Airport (MUB) | Maun, Botswana | |
| 3 | 12,270.24 miles (19,746.99 km) S | Hukuntsi Airport (HUK) | Hukuntsi, Botswana | |
| 4 | 12,244.90 miles (19,706.20 km) ESE | Gobabis Airport (GOG) | Gobabis, Namibia | |
| 5 | 12,179.24 miles (19,600.53 km) SSE | Dirico Airport (DRC) | Dirico, Angola | |
| 6 | 12,162.35 miles (19,573.36 km) ESE | Grootfontein Airport (GFY) | Grootfontein, Namibia | |
| 7 | 12,158.63 miles (19,567.37 km) SW | Jwaneng Airport (JWA) | Jwaneng, Botswana | |
| 8 | 12,152.18 miles (19,556.99 km) SSE | Rundu Airport (NDU) | Rundu, Okavango Region, Namibia | |
| 9 | 12,151.85 miles (19,556.46 km) ESE | Hosea Kutako International Airport (WDH) | Windhoek, Namibia | |
| 10 | 12,126.20 miles (19,515.17 km) ESE | Eros Airport (ERS) | Windhoek, Namibia | |
| 11 | 12,123.49 miles (19,510.82 km) SSW | Katima Mulilo Airport (MPA) | Katima Mulilo, Namibia | |
| 12 | 12,104.09 miles (19,479.60 km) SW | Sir Seretse Khama International Airport (GBE) | Gaborone, Botswana | |
| 13 | 12,097.87 miles (19,469.58 km) SW | Kasane Airport (BBK) | Kasane, Botswana | |
| 14 | 12,084.70 miles (19,448.39 km) SW | Lobatse Airport (LOQ) | Lobatse, Botswana | |
| 15 | 12,080.83 miles (19,442.16 km) SW | Victoria Falls Airport (VFA) | Victoria Falls, Zimbabwe | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.33 miles (66.52 km) NE | Sloulin Field International Airport (ISN) | Williston, North Dakota, United States | |
| 2 | 48.66 miles (78.31 km) SW | Dawson Community Airport (GDV) | Glendive, Montana, United States | |
| 3 | 69.41 miles (111.70 km) WNW | L. M. Clayton Airport (OLF) | Wolf Point, Montana, United States | |
| 4 | 76.29 miles (122.77 km) NNW | Sher-Wood Airport (PWD) | Plentywood, Montana, United States | |
| 5 | 90.57 miles (145.76 km) SE | Dickinson Theodore Roosevelt Regional Airport (DIK) | Dickinson, North Dakota, United States | |
| 6 | 111.04 miles (178.70 km) SSE | Bowman Municipal Airport (BWM) | Bowman, North Dakota, United States | |
| 7 | 117.38 miles (188.91 km) WNW | Glasgow International Airport (GGW) | Glasgow, Montana, United States | |
| 8 | 118.10 miles (190.06 km) NNE | Estevan Regional Aerodrome (YEN) | Estevan, Saskatchewan, Canada | |
| 9 | 118.99 miles (191.50 km) SW | Miles City Airport (MLS) | Miles City, Montana, United States | |
| 10 | 131.42 miles (211.49 km) W | Jordan Airport (JDN) | Jordan, Montana, United States | |
| 11 | 139.74 miles (224.89 km) ENE | Minot Air Force Base (MIB) | Minot, North Dakota, United States | |
| 12 | 140.05 miles (225.38 km) ENE | Minot International Airport (MOT) | Minot, North Dakota, United States | |
| 13 | 174.07 miles (280.14 km) ESE | Bismarck Municipal Airport (BIS) | Bismarck, North Dakota, United States | |
| 14 | 189.51 miles (304.99 km) N | Regina International Airport (YQR) | Regina, Saskatchewan, Canada | |
| 15 | 191.53 miles (308.24 km) NNW | CFB Moose Jaw (YMJ) | Moose Jaw, Saskatchewan, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,383.49 miles (16,710.57 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,297.57 miles (16,572.29 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,290.39 miles (16,560.74 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,266.41 miles (16,522.14 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,218.50 miles (16,445.05 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,203.17 miles (16,420.36 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 10,179.29 miles (16,381.94 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 8 | 10,169.42 miles (16,366.06 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 9 | 10,153.64 miles (16,340.65 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 10 | 10,120.11 miles (16,286.69 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 11 | 10,113.85 miles (16,276.63 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 12 | 10,100.83 miles (16,255.67 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 13 | 10,089.33 miles (16,237.15 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 14 | 10,078.56 miles (16,219.83 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 15 | 10,076.48 miles (16,216.49 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |