DEN to ONT: Distance and Flight Time
The distance from Denver International Airport (DEN) to Ontario International Airport (ONT) is 1,316 km (817 mi). A typical nonstop flight covers it in about 2h 10m, heading southwest. The distance is the same in either direction (ONT to DEN).
How far is it from Denver to Ontario?
The great-circle distance between Denver International Airport (DEN) and Ontario International Airport (ONT) is 1,316 km (817 mi, 710 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from DEN to ONT?
A nonstop flight typically takes about 2h 10m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. ONT is roughly southwest of DEN.
How is the DEN to ONT route written in code?
The pair is written DEN-ONT in IATA codes and KDEN-KONT in ICAO codes, the form used on a flight plan. Denver International Airport is DEN (KDEN), Ontario International Airport is ONT (KONT).
| DEN | ONT | |
|---|---|---|
| Airport | Denver International Airport | Ontario International Airport |
| ICAO code | KDEN | KONT |
| Country | United States | United States |
| Elevation | 5,431 ft | 944 ft |
| Rank by connections | #15 | #518 |
Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.
ONT sits 4,487 ft (1,368 m) lower than DEN, which is a real difference in air density on takeoff.
Airlines flying DEN to ONT
1 airline appear on this route in the open route dataset, 1 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| WN | Southwest Airlines | SWA | Southwest | Active |
A further 2 carriers sell this pair as a codeshare without operating it: FL, UA.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Denver from Ontario?
Denver International Airport (DEN) and Ontario International Airport (ONT) are 1,316 km (817 mi, 710 nautical miles) apart in a straight line.
How long is the flight from DEN to ONT?
A typical nonstop flight between DEN and ONT takes about 2h 10m. Actual times vary with aircraft type, winds and routing.
What direction is ONT from DEN?
Ontario International Airport (ONT) lies roughly southwest of Denver International Airport (DEN).
Which airlines fly DEN to ONT?
1 airline appear on the DEN-ONT route in the open dataset, including Southwest Airlines.
Related routes
Other routes from Denver (DEN):
Other routes from Ontario (ONT):
DEN airport code · ONT airport code · Busiest airports worldwide