Nonstop flight route between Arapahoe County, Colorado, United States and Ontario (near Los Angeles), California, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from APA to ONT:
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- About this route
- APA Airport Information
- ONT Airport Information
- Facts about APA
- Facts about ONT
- Map of Nearest Airports to APA
- List of Nearest Airports to APA
- Map of Furthest Airports from APA
- List of Furthest Airports from APA
- Map of Nearest Airports to ONT
- List of Nearest Airports to ONT
- Map of Furthest Airports from ONT
- List of Furthest Airports from ONT
About this route:
A direct, nonstop flight between Centennial Airport (APA), Arapahoe County, Colorado, United States and LA/Ontario International Airport (ONT), Ontario (near Los Angeles), California, United States would travel a Great Circle distance of 801 miles (or 1,288 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 Centennial Airport and LA/Ontario International Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | APA / KAPA | 
| Airport Name: | Centennial Airport | 
| Location: | Arapahoe County, Colorado, United States | 
| GPS Coordinates: | 39°34'12"N by 104°50'57"W | 
| Area Served: | Denver, Colorado | 
| Operator/Owner: | Arapahoe County Public Airport Authority | 
| Airport Type: | Public | 
| Elevation: | 5885 feet (1,794 meters) | 
| # of Runways: | 3 | 
| View all routes: | Routes from APA | 
| More Information: | APA Maps & Info | 
Arrival 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 | 
Facts about Centennial Airport (APA):
- Centennial Airport (APA) has 3 runways.
- The furthest airport from Centennial Airport (APA) is Sir Gaëtan Duval Airport (RRG), which is located 10,899 miles (17,540 kilometers) away in Rodrigues Island, Mauritius.
- Because of Centennial Airport's high elevation of 5,885 feet, planes must typically fly at a faster airspeed in order to takeoff or land at APA. Combined with a high temperature, this could make APA a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Centennial Airport covers 1,400 acres at an elevation of 5,885 feet.
- The closest airport to Centennial Airport (APA) is Denver International Airport (DEN), which is located 22 miles (36 kilometers) NNE of APA.
Facts about LA/Ontario International Airport (ONT):
- LA/Ontario International Airport (ONT) has 2 runways.
- In 2013, LAWA offered to return the airport to local control for a purchase price of $474mm, which was rejected.
- The closest airport to LA/Ontario International Airport (ONT) is Chino Airport (CNO), which is located only 6 miles (10 kilometers) SSW of ONT.
- Terminal 2 has 265,000 square feet and 12 gates.
- In 1981, a second east-west runway, 26L/8R, was built, necessitating the removal of the old NE-SW runway 4/22.
- 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.




