Nonstop flight route between Ontario (near Los Angeles), California, United States and Salem, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from ONT to SLO:
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- About this route
- ONT Airport Information
- SLO Airport Information
- Facts about ONT
- Facts about SLO
- Map of Nearest Airports to ONT
- List of Nearest Airports to ONT
- Map of Furthest Airports from ONT
- List of Furthest Airports from ONT
- Map of Nearest Airports to SLO
- List of Nearest Airports to SLO
- Map of Furthest Airports from SLO
- List of Furthest Airports from SLO
About this route:
A direct, nonstop flight between LA/Ontario International Airport (ONT), Ontario (near Los Angeles), California, United States and Salem–Leckrone Airport (SLO), Salem, Illinois, United States would travel a Great Circle distance of 1,618 miles (or 2,604 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 relatively short distance between LA/Ontario International Airport and Salem–Leckrone Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | ONT / KONT |
Airport Name: | LA/Ontario International Airport |
Location: | Ontario (near Los Angeles), California, United States |
GPS Coordinates: | 34°3'21"N by 117°36'3"W |
Area Served: | Ontario, California / Inland Empire, California |
Operator/Owner: | Los Angeles World Airports |
Airport Type: | Public |
Elevation: | 944 feet (288 meters) |
# of Runways: | 2 |
View all routes: | Routes from ONT |
More Information: | ONT Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SLO / KSLO |
Airport Name: | Salem–Leckrone Airport |
Location: | Salem, Illinois, United States |
GPS Coordinates: | 38°38'34"N by 88°57'51"W |
Area Served: | Salem, Illinois |
Operator/Owner: | Salem Airport Authority |
Airport Type: | Public |
Elevation: | 573 feet (175 meters) |
# of Runways: | 1 |
View all routes: | Routes from SLO |
More Information: | SLO Maps & Info |
Facts about LA/Ontario International Airport (ONT):
- The closest airport to LA/Ontario International Airport (ONT) is Chino Airport (CNO), which is located only 6 miles (10 kilometers) SSW of ONT.
- The airport is about 38 miles east of downtown Los Angeles, 18 miles west of downtown San Bernardino and 14 miles northwest of downtown Riverside.
- In 1981, a second east-west runway, 26L/8R, was built, necessitating the removal of the old NE-SW runway 4/22.
- Ontario is a major southwestern gateway hub for UPS.
- The furthest airport from LA/Ontario International Airport (ONT) is Pierrefonds Airport (ZSE), which is located 11,460 miles (18,443 kilometers) away in Saint-Pierre, Réunion.
- Because of LA/Ontario International Airport's relatively low elevation of 944 feet, planes can take off or land at LA/Ontario 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.
- LA/Ontario International Airport handled 4,812,006 passengers last year.
- LA/Ontario International Airport (ONT) has 2 runways.
- For a number of years, the airport operated alongside Ontario Air National Guard Station, which was closed as a result of the 1995 Base Realignment and Closure Commission.
- In 2013, LAWA offered to return the airport to local control for a purchase price of $474mm, which was rejected.
Facts about Salem–Leckrone Airport (SLO):
- The closest airport to Salem–Leckrone Airport (SLO) is Mt. Vernon Airport (MVN), which is located 23 miles (37 kilometers) SSE of SLO.
- Because of Salem–Leckrone Airport's relatively low elevation of 573 feet, planes can take off or land at Salem–Leckrone 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 Salem–Leckrone Airport (SLO) is Margaret River Airport (MGV), which is located 11,062 miles (17,802 kilometers) away in Margaret River, Western Australia, Australia.
- Salem–Leckrone Airport (SLO) currently has only 1 runway.