Nonstop flight route between Port Graham, Alaska, United States and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:
(59°20'53"N by 151°49'54"W)
Arrival Airport:
(38°34'14"N by 90°9'21"W)
Distance from PGM to CPS:
3,004.90 miles (4,835.91 km)
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Jump to:
- About this route
- PGM Airport Information
- CPS Airport Information
- Facts about PGM
- Facts about CPS
- Map of Nearest Airports to PGM
- List of Nearest Airports to PGM
- Map of Furthest Airports from PGM
- List of Furthest Airports from PGM
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Port Graham Airport (PGM), Port Graham, Alaska, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 3,005 miles (or 4,836 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 Port Graham Airport and St. Louis Downtown 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 Port Graham Airport and St. Louis Downtown Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PGM / |
| Airport Name: | Port Graham Airport |
| Location: | Port Graham, Alaska, United States |
| GPS Coordinates: | 59°20'53"N by 151°49'54"W |
| Area Served: | Port Graham, Alaska |
| Operator/Owner: | Alaska DOT&PF - Central Region |
| Airport Type: | Public |
| Elevation: | 93 feet (28 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PGM |
| More Information: | PGM Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | CPS / KCPS |
| Airport Name: | St. Louis Downtown Airport |
| Location: | Cahokia, Illinois (near St. Louis), United States |
| GPS Coordinates: | 38°34'14"N by 90°9'21"W |
| Area Served: | Greater St. Louis |
| Operator/Owner: | Bi-State Development Agency |
| Airport Type: | Public |
| Elevation: | 413 feet (126 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from CPS |
| More Information: | CPS Maps & Info |
Facts about Port Graham Airport (PGM):
- Because of Port Graham Airport's relatively low elevation of 93 feet, planes can take off or land at Port Graham 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 Port Graham Airport (PGM) is Port Elizabeth International Airport (PLZ), which is located 10,680 miles (17,188 kilometers) away in Port Elizabeth, South Africa.
- The closest airport to Port Graham Airport (PGM) is Nanwalek Airport (formerly English Bay Airport) (KEB), which is located only 3 miles (5 kilometers) W of PGM.
- Port Graham Airport (PGM) currently has only 1 runway.
Facts about St. Louis Downtown Airport (CPS):
- The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- St. Louis Downtown Airport (CPS) has 3 runways.
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
- The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 3.31 miles (5.32 km) W | Nanwalek Airport (formerly English Bay Airport) (KEB) | Nanwalek (English Bay), Alaska, United States |     |
| 2 | 7.90 miles (12.72 km) NE | Seldovia Airport (SOV) | Seldovia, Alaska, United States | |
| 3 | 24.02 miles (38.65 km) NNE | Homer Airport (HOM) | Homer, Alaska, United States | |
| 4 | 65.07 miles (104.71 km) SSW | Port Williams Seaplane Base (KPR) | Port Williams, Kodiak Island Borough, Alaska, United States | |
| 5 | 82.27 miles (132.40 km) SSW | Kitoi Bay Seaplane Base (KKB) | Kitoi Bay, Alaska, United States | |
| 6 | 82.55 miles (132.85 km) NNE | Soldotna Airport (SXQ) | Soldotna, Alaska, United States | |
| 7 | 86.20 miles (138.72 km) WNW | Pedro Bay Airport (PDB) | Pedro Bay, Alaska, United States | |
| 8 | 87.04 miles (140.08 km) NNE | Kenai Municipal Airport (ENA) | Kenai, Alaska, United States | |
| 9 | 99.75 miles (160.54 km) ENE | Seward Airport (SWD) | Seward, Alaska, United States | |
| 10 | 99.78 miles (160.59 km) SSW | Ouzinkie Airport (KOZ) | Ouzinkie, Alaska, United States | |
| 11 | 104.67 miles (168.45 km) W | Kokhanok Airport (KNK) | Kokhanok, Alaska, United States | |
| 12 | 104.78 miles (168.63 km) NW | Port Alsworth Airport (PTA) | Port Alsworth, Alaska, United States | |
| 13 | 107.20 miles (172.52 km) SSW | Port Bailey Seaplane Base (KPY) | Port Bailey, Kodiak Island Borough, Alaska, United States | |
| 14 | 107.47 miles (172.96 km) SSW | Port Lions Airport (ORI) | Port Lions, Alaska, United States | |
| 15 | 108.35 miles (174.37 km) S | Kodiak Municipal Airport (KDK) | Kodiak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,680.45 miles (17,188.48 km) S | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 2 | 10,666.04 miles (17,165.28 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,653.62 miles (17,145.29 km) S | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 4 | 10,629.69 miles (17,106.78 km) SSE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 5 | 10,618.65 miles (17,089.02 km) S | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,515.73 miles (16,923.38 km) S | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,465.79 miles (16,843.02 km) S | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 8 | 10,401.35 miles (16,739.31 km) S | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 9 | 10,397.85 miles (16,733.67 km) S | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 10 | 10,394.80 miles (16,728.77 km) S | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 11 | 10,392.12 miles (16,724.45 km) S | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 12 | 10,381.93 miles (16,708.06 km) S | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 13 | 10,377.89 miles (16,701.55 km) S | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 14 | 10,371.66 miles (16,691.53 km) S | Moshoeshoe I International Airport (MSU) | Maseru, Lesotho | |
| 15 | 10,358.96 miles (16,671.08 km) S | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.47 miles (26.50 km) NW | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 2 | 17.42 miles (28.04 km) E | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 3 | 22.85 miles (36.78 km) NNE | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 4 | 27.50 miles (44.26 km) WNW | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 5 | 45.73 miles (73.59 km) ENE | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 6 | 64.55 miles (103.88 km) E | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 7 | 72.26 miles (116.30 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 8 | 73.57 miles (118.39 km) SE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 9 | 83.94 miles (135.09 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 10 | 91.63 miles (147.46 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 11 | 92.63 miles (149.07 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 12 | 98.29 miles (158.19 km) SSE | Cape Girardeau Regional Airport (CGI) | Cape Girardeau, Missouri, United States | |
| 13 | 108.03 miles (173.86 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| 14 | 109.88 miles (176.83 km) NNW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 15 | 111.34 miles (179.18 km) NE | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,998.38 miles (17,700.14 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,976.37 miles (17,664.71 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,953.82 miles (17,628.43 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,950.15 miles (17,622.51 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,924.13 miles (17,580.63 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,908.52 miles (17,555.52 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,899.45 miles (17,540.92 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,897.05 miles (17,537.06 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,874.80 miles (17,501.25 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,862.63 miles (17,481.67 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,855.26 miles (17,469.80 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,843.70 miles (17,451.20 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,809.16 miles (17,395.61 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,809.10 miles (17,395.51 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 15 | 10,804.00 miles (17,387.31 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |