Nonstop flight route between Tehran, Iran and Alton, Illinois, United States:
Departure Airport:
(35°41'21"N by 51°18'48"E)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from THR to ALN:
6,724.55 miles (10,822.09 km)
Share this route:
Jump to:
- About this route
- THR Airport Information
- ALN Airport Information
- Facts about THR
- Facts about ALN
- Map of Nearest Airports to THR
- List of Nearest Airports to THR
- Map of Furthest Airports from THR
- List of Furthest Airports from THR
- Map of Nearest Airports to ALN
- List of Nearest Airports to ALN
- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
About this route:
A direct, nonstop flight between Mehrabad Airport (THR), Tehran, Iran and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 6,725 miles (or 10,822 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 Mehrabad Airport and St. Louis Regional 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 Mehrabad Airport and St. Louis Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | THR / OIII |
| Airport Names: |
|
| Location: | Tehran, Iran |
| GPS Coordinates: | 35°41'21"N by 51°18'48"E |
| Area Served: | Tehran, Karaj |
| Airport Type: | Joint (Public/Military) |
| Elevation: | 3962 feet (1,208 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from THR |
| More Information: | THR Maps & Info |
Arrival 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 |
Facts about Mehrabad Airport (THR):
- In addition to being known as "Mehrabad Airport", another name for THR is "فرودگاه مهرآباد".
- The furthest airport from Mehrabad Airport (THR) is Totegegie Airport (GMR), which is located 11,490 miles (18,491 kilometers) away in Mangareva, Gambier Islands, French Polynesia.
- Mehrabad International Airport consists of six terminals, with Terminals 1,3 and 5 only used during Haj and Umrah seasons.
- Mehrabad Airport (THR) has 3 runways.
- The closest airport to Mehrabad Airport (THR) is Tehran Imam Khomeini International Airport (IKA), which is located 21 miles (34 kilometers) SSW of THR.
- An aircraft engineering and maintenance company Fajr Ashian, has a maintenance hangar adjacent to main airport premises.
- Mehrabad Airport handled 13,163,368 passengers last year.
Facts about St. Louis Regional Airport (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.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- St. Louis Regional Airport (ALN) has 2 runways.
- The 2,250 acres airfield sits at 544 ft MSL.
- 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 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 20.93 miles (33.69 km) SSW | Tehran Imam Khomeini International Airport (IKA) | Tehran, Iran |     |
| 2 | 88.29 miles (142.09 km) NE | Bishe Kola Air Base (BSM) | Amol, Iran | |
| 3 | 123.59 miles (198.90 km) ENE | Sari Dasht-e Naz International Airport (SRY) | Sari, Iran | |
| 4 | 165.72 miles (266.69 km) WSW | Hamadan Airport (HDM) | Hamadan, Iran | |
| 5 | 205.41 miles (330.58 km) S | Isfahan International Airport (IFN) | Isfahan, Iran | |
| 6 | 232.33 miles (373.89 km) SW | Khorramabad Airport (KHD) | Khorramabad, Iran | |
| 7 | 235.91 miles (379.66 km) S | Shahrekord International Airport (CQD) | Shahrekord, Iran | |
| 8 | 242.04 miles (389.52 km) NW | Ardabil Airport (ADU) | Ardabil, Iran | |
| 9 | 252.77 miles (406.79 km) WSW | Shahid Ashrafi Esfahani Airport (KSH) | Kermanshah, Iran | |
| 10 | 252.96 miles (407.11 km) NNW | Lankaran International Airport (LLK) | Lankaran, Azerbaijan | |
| 11 | 280.02 miles (450.64 km) SW | Dezful Airport (DEF) | Dezful, Iran | |
| 12 | 311.89 miles (501.93 km) SE | Shahid Sadooghi Airport (AZD) | Yazd, Iran | |
| 13 | 316.01 miles (508.56 km) NNE | Turkmenbashi International Airport (KRW) | Türkmenbaşy, Turkmenistan, Turkmenistan | |
| 14 | 327.41 miles (526.92 km) WNW | Tabriz International Airport (TBZ) | Tabriz, Iran | |
| 15 | 334.64 miles (538.55 km) SSW | Ahwaz International Airport (AWZ) | Ahwaz, Iran | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,489.90 miles (18,491.16 km) SSE | Totegegie Airport (GMR) | Mangareva, Gambier Islands, French Polynesia | |
| 2 | 11,245.16 miles (18,097.29 km) SSE | Tureira Airport (ZTA) | Tureia, Tuamotus, French Polynesia | |
| 3 | 11,160.65 miles (17,961.27 km) WSW | Mataveri International Airport (IPC) | Easter Island, Chile | |
| 4 | 11,147.68 miles (17,940.41 km) SSE | Nukutavake Airport (NUK) | Nukutavake, Tuamotus, French Polynesia | |
| 5 | 11,131.57 miles (17,914.48 km) SSE | Pukarua Airport (PUK) | Pukarua, Tuamotus, French Polynesia | |
| 6 | 11,007.27 miles (17,714.45 km) SE | Hao Airport (HOI) | Hao, Tuamotu Island, French Polynesia | |
| 7 | 10,871.27 miles (17,495.58 km) SSE | Fangatau Airport (FGU) | Fangatau, French Polynesia | |
| 8 | 10,835.59 miles (17,438.14 km) SE | Raroia Airport (RRR) | Raroia, French Polynesia | |
| 9 | 10,827.77 miles (17,425.56 km) SE | Makemo Airport (MKP) | Makemo, French Polynesia | |
| 10 | 10,802.77 miles (17,385.32 km) SE | Anaa Airport (AAA) | Anaa, Tuamotus, French Polynesia | |
| 11 | 10,795.71 miles (17,373.97 km) ESE | Rurutu Airport (RUR) | Rurutu, French Polynesia | |
| 12 | 10,724.11 miles (17,258.73 km) SE | Fakarava Airport (FAV) | Fakarava, Society Islands, French Polynesia | |
| 13 | 10,668.11 miles (17,168.62 km) SE | Apataki Airport (APK) | Apataki, French Polynesia | |
| 14 | 10,644.67 miles (17,130.89 km) SE | Fa'a'ā International Airport (PPT) | Papeete, Tahiti, French Polynesia | |
| 15 | 10,641.76 miles (17,126.21 km) SE | Arutua Airport (AXR) | Arutua, Tuamotus, French Polynesia | |
| 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 | |