Nonstop flight route between Alton, Illinois, United States and Hagåtña, Guam:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(13°29'2"N by 144°47'49"E)
Distance from ALN to GUM:
7,380.85 miles (11,878.29 km)
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Jump to:
- About this route
- ALN Airport Information
- GUM Airport Information
- Facts about ALN
- Facts about GUM
- 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 GUM
- List of Nearest Airports to GUM
- Map of Furthest Airports from GUM
- List of Furthest Airports from GUM
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Guam International Airport (GUM), Hagåtña, Guam would travel a Great Circle distance of 7,381 miles (or 11,878 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 Guam 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 Guam 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: | GUM / PGUM |
| Airport Names: |
|
| Location: | Hagåtña, Guam |
| GPS Coordinates: | 13°29'2"N by 144°47'49"E |
| Area Served: | Guam |
| Operator/Owner: | A.B. Won Pat International Airport Authority, Guam |
| Airport Type: | Public |
| Elevation: | 297 feet (91 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from GUM |
| More Information: | GUM Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- St. Louis Regional Airport (ALN) has 2 runways.
- The 2,250 acres airfield sits at 544 ft MSL.
- 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.
- 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 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.
Facts about Guam International Airport (GUM):
- Because of Guam International Airport's relatively low elevation of 297 feet, planes can take off or land at Guam 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.
- Several fatal accidents have occurred on and near Guam over the years.
- The furthest airport from Guam International Airport (GUM) is Salvador-Deputado Luís Eduardo Magalhães International Airport (2 de Julho) (SSA), which is nearly antipodal to Guam International Airport (meaning Guam International Airport is almost on the exact opposite side of the Earth from Salvador-Deputado Luís Eduardo Magalhães International Airport (2 de Julho)), and is located 12,223 miles (19,671 kilometers) away in Salvador, Bahia, Brazil.
- Guam International Airport handled 2,807,205 passengers last year.
- Transit passengers are also inspected by the USCBP before being allowed to proceed to their connecting gate.
- The closest airport to Guam International Airport (GUM) is Andersen Air Force Base (UAM), which is located only 11 miles (17 kilometers) NE of GUM.
- Guam International Airport (GUM) has 2 runways.
- Travel to Guam was restricted to military personnel with a security clearance until 1962.
- In addition to being known as "Guam International Airport", another name for GUM is "Antonio B. Won Pat International Airport".
| 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 | 10.87 miles (17.49 km) NE | Andersen Air Force Base (UAM) | Agana, Guam | |
| 2 | 56.29 miles (90.59 km) NNE | Rota International Airport (ROP) | Rota Island, Northern Mariana Islands | |
| 3 | 118.29 miles (190.37 km) NNE | Tinian International Airport (TIQ) | Tinian Island, Northern Mariana Islands | |
| 4 | 129.06 miles (207.70 km) NNE | Saipan International Airport (SPN) | Saipan Island, Northern Mariana Islands | |
| 5 | 414.68 miles (667.36 km) SW | Falalop Airfield (ULI) | Falalop Island, Yap, Federated States of Micronesia | |
| 6 | 531.42 miles (855.24 km) WSW | Yap International Airport (YAP) | Yap, Federated States of Micronesia | |
| 7 | 634.07 miles (1,020.43 km) SE | Chuuk International Airport (TKK) | Weno, Federated States of Micronesia | |
| 8 | 812.92 miles (1,308.26 km) NNW | Central Field (Iwo Jima)Motoyama No. 2Airfield No. 2 (IWO) | Iwo Jima, Bonin Islands, Japan | |
| 9 | 814.54 miles (1,310.88 km) WSW | Roman Tmetuchl International Airport (ROR) | Koror, Palau | |
| 10 | 957.19 miles (1,540.44 km) NE | Minamitorishima Air Field (MUS) | Minami-Tori-shima, Japan | |
| 11 | 1,015.93 miles (1,634.98 km) ESE | Pohnpei International Airport (PNI) | Kolonia, Federated States of Micronesia | |
| 12 | 1,089.10 miles (1,752.73 km) S | Momote Airport (MAS) | Los Negros Island, Admiralty Islands, Papua New Guinea | |
| 13 | 1,103.65 miles (1,776.15 km) SSE | Emirau Airport (EMI) | Emirau, Papua New Guinea | |
| 14 | 1,146.15 miles (1,844.54 km) SSW | Batom Airport (BXM) | Batom, Indonesia | |
| 15 | 1,147.84 miles (1,847.27 km) SSW | Sentani Airport (SNA) (DJJ) | Jayapura, Indonesia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,223.21 miles (19,671.30 km) E | Salvador-Deputado Luís Eduardo Magalhães International Airport (2 de Julho) (SSA) | Salvador, Bahia, Brazil | |
| 2 | 12,222.90 miles (19,670.80 km) SE | Aracaju–Santa Maria Airport (AJU) | Aracaju, Sergipe, Brazil | |
| 3 | 12,164.19 miles (19,576.32 km) ESE | Ilhéus/Bahia-Jorge Amado Airport (IOS) | Ilhéus, Bahia, Brazil | |
| 4 | 12,159.92 miles (19,569.45 km) S | Maceió/Zumbi dos Palmares International Airport (MCZ) | Maceió, Brazil | |
| 5 | 12,107.33 miles (19,484.81 km) SE | Porto Seguro Airport (BPS) | Porto Seguro, Brazil | |
| 6 | 12,066.14 miles (19,418.53 km) S | Recife/Guararapes–Gilberto Freyre International Airport (REC) | Recife, Brazil | |
| 7 | 12,045.84 miles (19,385.85 km) ESE | Pedro Otacílio Figueiredo Airport (VDC) | Vitória da Conquista, Brazil | |
| 8 | 12,022.31 miles (19,347.99 km) E | Coronel Horácio de Mattos Airport (LEC) | Lençõis, Bahia, Brazil | |
| 9 | 12,004.84 miles (19,319.86 km) S | Presidente João Suassuna Airport (CPV) | Campina Grande, Paraíba, Brazil | |
| 10 | 11,998.54 miles (19,309.73 km) S | Presidente Castro Pinto International Airport (JPA) | João Pessoa, Paraíba, Brazil | |
| 11 | 11,973.90 miles (19,270.07 km) SE | Petrolina–Senador Nilo Coelho Airport (PNZ) | Petrolina, Pernambuco, Brazil | |
| 12 | 11,927.98 miles (19,196.17 km) E | Guanambi Airport (GNM) | Guanambi, Bahia, Brazil | |
| 13 | 11,913.37 miles (19,172.66 km) S | Augusto Severo International Airport (NAT) | Natal, Brazil | |
| 14 | 11,885.09 miles (19,127.15 km) E | Bom Jesus da Lapa Airport (LAZ) | Bom Jesus da Lapa, Bahia, Brazil | |
| 15 | 11,876.33 miles (19,113.05 km) ESE | Barra Airport (BQQ) | Barra, Bahia, Brazil | |