Nonstop flight route between Alton, Illinois, United States and Koror, Palau:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(7°22'1"N by 134°32'39"E)
Distance from ALN to ROR:
8,151.87 miles (13,119.13 km)
Share this route:
Jump to:
- About this route
- ALN Airport Information
- ROR Airport Information
- Facts about ALN
- Facts about ROR
- Map of Nearest Airports to ALN
- List of Nearest Airports to ALN
- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
- Map of Nearest Airports to ROR
- List of Nearest Airports to ROR
- Map of Furthest Airports from ROR
- List of Furthest Airports from ROR
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Roman Tmetuchl International Airport (ROR), Koror, Palau would travel a Great Circle distance of 8,152 miles (or 13,119 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 St. Louis Regional Airport and Roman Tmetuchl International 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 St. Louis Regional Airport and Roman Tmetuchl International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ALN / KALN |
| Airport Name: | St. Louis Regional Airport |
| Location: | Alton, Illinois, United States |
| GPS Coordinates: | 38°53'25"N by 90°2'45"W |
| Area Served: | Alton, Illinois |
| Operator/Owner: | St. Louis Regional |
| Airport Type: | Public |
| Elevation: | 544 feet (166 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ALN |
| More Information: | ALN Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | ROR / PTRO |
| Airport Name: | Roman Tmetuchl International Airport |
| Location: | Koror, Palau |
| GPS Coordinates: | 7°22'1"N by 134°32'39"E |
| Operator/Owner: | Republic of Palau |
| Airport Type: | Public |
| Elevation: | 176 feet (54 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from ROR |
| More Information: | ROR Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- The furthest airport from St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
- The 2,250 acres airfield sits at 544 ft MSL.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
- Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.
- St. Louis Regional Airport (ALN) has 2 runways.
Facts about Roman Tmetuchl International Airport (ROR):
- The closest airport to Roman Tmetuchl International Airport (ROR) is Yap International Airport (YAP), which is located 283 miles (456 kilometers) ENE of ROR.
- Roman Tmetuchl International Airport (ROR) currently has only 1 runway.
- A resolution adopted by the Senate of Palau in May 2006 renamed Palau International Airport as the Roman Tmetuchl International Airport, in honor of late local politician and businessman Roman Tmetuchl.
- Roman Tmetuchl International Airport is the main airport of Palau.
- Because of Roman Tmetuchl International Airport's relatively low elevation of 176 feet, planes can take off or land at Roman Tmetuchl 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.
- The furthest airport from Roman Tmetuchl International Airport (ROR) is Imperatriz-Prefeito Renato Moreira Airport (IMP), which is nearly antipodal to Roman Tmetuchl International Airport (meaning Roman Tmetuchl International Airport is almost on the exact opposite side of the Earth from Imperatriz-Prefeito Renato Moreira Airport), and is located 12,250 miles (19,714 kilometers) away in Imperatriz, Maranhão, Brazil.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 19.64 miles (31.61 km) WSW | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States |     |
| 2 | 22.85 miles (36.78 km) SSW | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 3 | 26.41 miles (42.50 km) SSE | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 4 | 36.08 miles (58.06 km) E | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 5 | 36.24 miles (58.32 km) WSW | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 6 | 60.74 miles (97.76 km) ESE | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 7 | 68.78 miles (110.69 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 8 | 75.13 miles (120.92 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 9 | 88.08 miles (141.75 km) SSE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 10 | 90.73 miles (146.02 km) NE | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| 11 | 95.12 miles (153.07 km) NW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 12 | 96.44 miles (155.20 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 13 | 102.97 miles (165.72 km) ENE | Coles County Memorial Airport (MTO) | Mattoon/Charleston, Illinois, United States | |
| 14 | 107.04 miles (172.27 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 15 | 115.57 miles (186.00 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,002.15 miles (17,706.21 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,979.99 miles (17,670.53 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,957.22 miles (17,633.90 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,954.58 miles (17,629.65 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,926.12 miles (17,583.85 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,910.74 miles (17,559.09 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,901.55 miles (17,544.30 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,897.24 miles (17,537.37 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,880.36 miles (17,510.20 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,861.31 miles (17,479.54 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,859.59 miles (17,476.77 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,841.22 miles (17,447.21 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,808.74 miles (17,394.93 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,807.95 miles (17,393.67 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,799.72 miles (17,380.43 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 283.14 miles (455.67 km) ENE | Yap International Airport (YAP) | Yap, Federated States of Micronesia | |
| 2 | 402.42 miles (647.62 km) ENE | Falalop Airfield (ULI) | Falalop Island, Yap, Federated States of Micronesia | |
| 3 | 565.60 miles (910.25 km) W | Bislig Airport (BPH) | Bislig City, Surigao del Sur, Philippines | |
| 4 | 567.78 miles (913.76 km) W | Mati Airport (MXI) | Mati, Davao Oriental, Philippines | |
| 5 | 571.65 miles (919.98 km) S | Rendani Airport (MKW) | Manokwari, Irian Jaya, Indonesia | |
| 6 | 574.17 miles (924.03 km) S | Kornasoren Airport (FOO) | Noemfoor, Schouten Islands, Indonesia | |
| 7 | 584.52 miles (940.69 km) WNW | Tandag Airport (TDG) | Tandag, Surigao del Sur, Philippines | |
| 8 | 588.81 miles (947.59 km) WSW | Melangguane Airport (MNA) | Melangguane, North Sulawesi, Indonesia | |
| 9 | 600.99 miles (967.19 km) S | Frans Kaisiepo Airport (BIK) | Biak, Indonesia | |
| 10 | 606.38 miles (975.87 km) S | Anggi Airport (AGD) | Anggi, Indonesia | |
| 11 | 607.58 miles (977.80 km) WNW | Sayak Airport (SOS) | Del Carmen, Surigao del Norte, Philippines | |
| 12 | 608.48 miles (979.25 km) SSW | Ayawasi Airport (AYW) | Ayawasi, Indonesia | |
| 13 | 610.12 miles (981.90 km) W | Francisco Bangoy International Airport (DVO) | Davao City, Philippines | |
| 14 | 629.62 miles (1,013.27 km) W | Butuan-Bancasi Airport (BXU) | Butuan City, Philippines | |
| 15 | 640.91 miles (1,031.45 km) WNW | Surigao Airport (SUG) | Surigao City, Surigao del Norte, Philippines | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,249.70 miles (19,713.94 km) SE | Imperatriz-Prefeito Renato Moreira Airport (IMP) | Imperatriz, Maranhão, Brazil | |
| 2 | 12,245.69 miles (19,707.48 km) E | Araguaína Airport (AUX) | Araguaína, Tocantins, Brazil | |
| 3 | 12,195.83 miles (19,627.24 km) SW | Teresina–Senador Petrônio Portella Airport (THE) | Teresina, Piauí, Brazil | |
| 4 | 12,164.89 miles (19,577.44 km) ESE | Conceição do Araguaia Airport (CDJ) | Conceição do Araguaia, Pará, Brazil | |
| 5 | 12,153.91 miles (19,559.77 km) SE | Palmas–Brigadeiro Lysias Rodrigues Airport (PMW) | Palmas, Tocantins, Brazil | |
| 6 | 12,148.67 miles (19,551.34 km) ESE | João Correa da Rocha Airport (MAB) | Marabá, Pará, Brazil | |
| 7 | 12,135.12 miles (19,529.53 km) SSW | Barra Airport (BQQ) | Barra, Bahia, Brazil | |
| 8 | 12,126.45 miles (19,515.59 km) E | Xinguara Airport (XIG) | Xinguara, Pará, Brazil | |
| 9 | 12,113.14 miles (19,494.15 km) ESE | Carajás Airport (CKS) | Carajás, Pará, Brazil | |
| 10 | 12,109.82 miles (19,488.82 km) S | Barreiras Airport (BRA) | Barreiras, Bahia, Brazil | |
| 11 | 12,096.02 miles (19,466.60 km) SSW | Marechal Cunha Machado International Airport (Tirirical) (SLZ) | São Luís, Brazil | |
| 12 | 12,077.07 miles (19,436.11 km) WSW | Petrolina–Senador Nilo Coelho Airport (PNZ) | Petrolina, Pernambuco, Brazil | |
| 13 | 12,069.73 miles (19,424.30 km) SSW | Barreirinhas Airport (BRB) | Barreirinhas, Maranhão, Brazil | |
| 14 | 12,044.38 miles (19,383.50 km) SE | Gurupi Airport (GRP) | Gurupi, Goiás, Brazil | |
| 15 | 12,035.20 miles (19,368.73 km) SW | Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB) | Parnaiba, Piaui, Brazil | |