Nonstop flight route between Merritt Island, Florida, United States and St. Mary's, Alaska, United States:
Departure Airport:
(28°20'30"N by 80°41'8"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from COI to KSM:
4,270.68 miles (6,872.98 km)
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Jump to:
- About this route
- COI Airport Information
- KSM Airport Information
- Facts about COI
- Facts about KSM
- Map of Nearest Airports to COI
- List of Nearest Airports to COI
- Map of Furthest Airports from COI
- List of Furthest Airports from COI
- 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 Merritt Island Airport (COI), Merritt Island, Florida, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 4,271 miles (or 6,873 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 Merritt Island 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 Merritt Island 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: | COI / KCOI |
| Airport Name: | Merritt Island Airport |
| Location: | Merritt Island, Florida, United States |
| GPS Coordinates: | 28°20'30"N by 80°41'8"W |
| Operator/Owner: | Titusville-Cocoa Airport Authority |
| Airport Type: | Public |
| Elevation: | 7 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from COI |
| More Information: | COI 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 Merritt Island Airport (COI):
- Merritt Island Airport (COI) currently has only 1 runway.
- The closest airport to Merritt Island Airport (COI) is Patrick Air Force Base (COF), which is located only 9 miles (14 kilometers) SSE of COI.
- The furthest airport from Merritt Island Airport (COI) is Shark Bay Airport (MJK), which is located 11,544 miles (18,578 kilometers) away in Monkey Mia, Western Australia, Australia.
- An operations building and maintenance hangar were located on the south side of the airfield and the Mosquito Control District had a maintenance hangar on the north side of the airfield.
- Because of Merritt Island Airport's relatively low elevation of 7 feet, planes can take off or land at Merritt 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.
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 8.69 miles (13.98 km) SSE | Patrick Air Force Base (COF) | Cocoa Beach, Florida, United States |     |
| 2 | 13.81 miles (22.23 km) NNW | Space Coast Regional Airport (TIX) | Titusville, Florida, United States | |
| 3 | 16.69 miles (26.85 km) S | Melbourne International Airport (MLB) | Melbourne, Florida, United States | |
| 4 | 38.37 miles (61.75 km) W | Orlando International Airport (MCO) | Orlando, Florida, United States | |
| 5 | 41.78 miles (67.24 km) WNW | Orlando Executive Airport (ORL) | Orlando, Florida, United States | |
| 6 | 45.05 miles (72.51 km) NW | Orlando/Sanford International Airport (SFB) | Sanford, Florida (near Orlando), United States | |
| 7 | 45.86 miles (73.81 km) W | Kissimmee Gateway Airport (ISM) | Orlando, Florida, United States | |
| 8 | 50.14 miles (80.69 km) SSE | Vero Beach Municipal Airport (VRB) | Vero Beach, Florida, United States | |
| 9 | 54.01 miles (86.92 km) W | Walt Disney World Airport (DWS) | Walt Disney World / Orlando, Florida, United States [1] | |
| 10 | 61.62 miles (99.17 km) SSE | St. Lucie County International Airport (FPR) | Fort Pierce, Florida, United States | |
| 11 | 62.52 miles (100.62 km) NNW | Daytona Beach International Airport (DAB) | Daytona Beach, Florida, United States | |
| 12 | 67.81 miles (109.13 km) WSW | Winter Haven's Gilbert Airport (GIF) | Winter Haven, Florida, United States | |
| 13 | 72.32 miles (116.39 km) WSW | Bartow Municipal Airport (BOW) | Bartow, Florida, United States | |
| 14 | 73.05 miles (117.56 km) SW | Avon Park Executive Airport (AVO) | Avon Park, Florida, United States | |
| 15 | 73.15 miles (117.72 km) SSW | Sebring Regional Airport (SEF) | Sebring, Florida, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,544.11 miles (18,578.41 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 2 | 11,524.65 miles (18,547.08 km) W | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 3 | 11,518.87 miles (18,537.77 km) WSW | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 4 | 11,502.86 miles (18,512.01 km) W | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 5 | 11,479.74 miles (18,474.80 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 6 | 11,452.77 miles (18,431.40 km) W | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 7 | 11,436.22 miles (18,404.77 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 11,427.99 miles (18,391.53 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 9 | 11,424.04 miles (18,385.17 km) W | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 10 | 11,423.07 miles (18,383.61 km) WSW | RAAF Learmonth (LEA) | Exmouth, Western Australia, Australia | |
| 11 | 11,416.62 miles (18,373.22 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 12 | 11,415.43 miles (18,371.30 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 13 | 11,412.37 miles (18,366.39 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 14 | 11,407.25 miles (18,358.14 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 15 | 11,364.23 miles (18,288.91 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 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 | |