Nonstop flight route between Richmond, Queensland, Australia and St. Mary's, Alaska, United States:
Departure Airport:
(20°42'6"S by 143°6'52"E)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from RCM to KSM:
6,424.81 miles (10,339.70 km)
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Jump to:
- About this route
- RCM Airport Information
- KSM Airport Information
- Facts about RCM
- Facts about KSM
- Map of Nearest Airports to RCM
- List of Nearest Airports to RCM
- Map of Furthest Airports from RCM
- List of Furthest Airports from RCM
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
About this route:
A direct, nonstop flight between Richmond Airport (RCM), Richmond, Queensland, Australia and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 6,425 miles (or 10,340 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 Richmond Airport and St. Mary's 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 Richmond Airport and St. Mary's Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | RCM / YRMD |
| Airport Name: | Richmond Airport |
| Location: | Richmond, Queensland, Australia |
| GPS Coordinates: | 20°42'6"S by 143°6'52"E |
| Area Served: | Richmond, Queensland, Australia |
| Operator/Owner: | Richmond Shire Council |
| Airport Type: | Public |
| Elevation: | 676 feet (206 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from RCM |
| More Information: | RCM Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | KSM / PASM |
| Airport Name: | St. Mary's Airport |
| Location: | St. Mary's, Alaska, United States |
| GPS Coordinates: | 62°3'38"N by 163°18'6"W |
| Operator/Owner: | Alaska DOT&PF |
| Airport Type: | Public |
| Elevation: | 312 feet (95 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from KSM |
| More Information: | KSM Maps & Info |
Facts about Richmond Airport (RCM):
- Because of Richmond Airport's relatively low elevation of 676 feet, planes can take off or land at Richmond 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 furthest airport from Richmond Airport (RCM) is Agostinho Neto Airport (NTO), which is located 11,629 miles (18,716 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- The closest airport to Richmond Airport (RCM) is Hughenden Airport (HGD), which is located 72 miles (116 kilometers) E of RCM.
- Richmond Airport (RCM) currently has only 1 runway.
Facts about St. Mary's Airport (KSM):
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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 St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
- St. Mary's Airport (KSM) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 72.16 miles (116.12 km) E | Hughenden Airport (HGD) | Hughenden, Queensland, Australia |     |
| 2 | 90.02 miles (144.88 km) W | Julia Creek Airport (JCK) | Julia Creek, Queensland, Australia | |
| 3 | 137.45 miles (221.21 km) W | Elrose Mine Airport (ERQ) | Eloise Copper Mine, Queensland, Australia | |
| 4 | 163.35 miles (262.88 km) WSW | Trepell Airport (TQP) | Trapell, Queensland, Australia | |
| 5 | 168.74 miles (271.56 km) W | Cloncurry Airport (CNJ) | Cloncurry, Queensland, Australia | |
| 6 | 202.99 miles (326.68 km) SSE | Longreach Airport (LRE) | Longreach, Queensland, Australia | |
| 7 | 207.58 miles (334.07 km) SE | Aramac Airport (AXC) | Aramac, Queensland, Australia | |
| 8 | 209.58 miles (337.29 km) ENE | Charters Towers Airport (CXT) | Charters Towers, Queensland, Australia | |
| 9 | 213.85 miles (344.16 km) N | Abingdon Airport (ABG) | Abingdon, Queensland, Australia | |
| 10 | 234.40 miles (377.23 km) W | Mount Isa Airport (ISA) | Mount Isa, Queensland, Australia | |
| 11 | 242.52 miles (390.29 km) SE | Barcaldine Airport (BCI) | Barcaldine, Queensland, Australia | |
| 12 | 249.70 miles (401.85 km) SW | Springvale Airport (KSV) | Springvale, Queensland, Australia | |
| 13 | 256.65 miles (413.04 km) SW | Boulia Airport (BQL) | Boulia, Queensland, Australia | |
| 14 | 257.29 miles (414.06 km) ENE | Townsville Airport (TSV) | Townsville, Queensland, Australia | |
| 15 | 262.70 miles (422.78 km) NNE | Chillagoe Airport (LLG) | Chillagoe, Queensland, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,629.33 miles (18,715.55 km) WNW | Agostinho Neto Airport (NTO) | Ponta do Sol, Santo Antão, Cape Verde | |
| 2 | 11,618.44 miles (18,698.02 km) WNW | Cesária Évora International Airport (VXE) | São Vicente, Cape Verde | |
| 3 | 11,564.61 miles (18,611.39 km) WNW | Preguiça Airport (SNE) | São Nicolau, Cape Verde | |
| 4 | 11,527.56 miles (18,551.77 km) WNW | São Filipe Airport (SFL) | Fogo, Cape Verde | |
| 5 | 11,524.47 miles (18,546.79 km) WNW | Mosteiros Airport (MTI) | Mosteiros, Cape Verde | |
| 6 | 11,485.09 miles (18,483.42 km) WNW | Amílcar Cabral International Airport (SID) | Sal Island, Cape Verde | |
| 7 | 11,470.28 miles (18,459.59 km) WNW | Praia International Airport (RAI) | Praia, Cape Verde | |
| 8 | 11,467.15 miles (18,454.55 km) WNW | Aristides Pereira International Airport (BVC) | Boa Vista, Cape Verde | |
| 9 | 11,460.39 miles (18,443.66 km) WNW | Maio Airport (MMO) | Maio, Cape Verde | |
| 10 | 11,157.71 miles (17,956.55 km) W | La Güera Airport (ZLG) | La Güera, Western Sahara | |
| 11 | 11,155.19 miles (17,952.50 km) W | Nouadhibou International Airport (NDB) | Nouadhibou, Mauritania | |
| 12 | 11,119.06 miles (17,894.35 km) WNW | La Palma Airport (SPC) | La Palma, Canary Islands, Spain | |
| 13 | 11,112.99 miles (17,884.57 km) NNW | Horta International Airport (HOR) | Horta, Azores, Portugal | |
| 14 | 11,110.22 miles (17,880.13 km) NNW | Santa Maria Airport (SMA) | Santa Maria, Portugal | |
| 15 | 11,104.72 miles (17,871.26 km) NNW | Pico Airport (PIX) | Pico Island, Azores, Portugal | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.52 miles (20.15 km) W | Mountain Village Airport (MOU) | Mountain Village, Alaska, United States | |
| 2 | 15.71 miles (25.28 km) ESE | Pilot Station Airport (PQS) | Pilot Station, Alaska, United States | |
| 3 | 43.61 miles (70.18 km) ESE | Marshall Don Hunter Sr. Airport (MLL) | Marshall, Alaska, United States | |
| 4 | 58.95 miles (94.87 km) WNW | Sheldon Point Airport (SXP) | Sheldon Point, Alaska, United States | |
| 5 | 61.02 miles (98.20 km) NW | Alakanuk Airport (AUK) | Alakanuk, Alaska, United States | |
| 6 | 62.90 miles (101.24 km) NW | Emmonak Airport (EMK) | Emmonak, Alaska, United States | |
| 7 | 67.40 miles (108.48 km) N | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 8 | 67.43 miles (108.52 km) ESE | Russian Mission Airport (RSH) | Russian Mission, Alaska, United States | |
| 9 | 75.21 miles (121.04 km) W | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 10 | 83.21 miles (133.91 km) WSW | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 11 | 84.72 miles (136.35 km) SSE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 12 | 85.97 miles (138.35 km) SSE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 13 | 88.49 miles (142.42 km) W | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 14 | 89.19 miles (143.53 km) SSW | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 15 | 89.22 miles (143.59 km) SSE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,494.08 miles (16,888.54 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,482.44 miles (16,869.80 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,457.83 miles (16,830.21 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,416.76 miles (16,764.12 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,371.90 miles (16,691.92 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,261.64 miles (16,514.46 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,199.66 miles (16,414.71 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,195.75 miles (16,408.43 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,169.94 miles (16,366.89 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 10 | 10,169.94 miles (16,366.89 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 11 | 10,157.43 miles (16,346.75 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,151.99 miles (16,338.00 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,149.37 miles (16,333.79 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 14 | 10,143.31 miles (16,324.03 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 15 | 10,133.50 miles (16,308.25 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |