DenverOntarioDirect FlightsDEN–ONT
Denver (Denver International Airport) to Ontario (Ontario International Airport).
Flight time from DEN to ONT is estimated at about 2h 16m, based on the 818-mile great-circle distance. Our current captured departure sample includes 8-9/day across 3 captured airlines, with Southwest Airlines appearing most often in that sample. Captured departure times run from 07:45 to 22:29 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~2h 16m Estimated from great-circle distance — no tracked flights yet. | 818 mi | 8-9/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for DEN to ONT
Our current provider sample includes 8-9/day from DEN to ONT across 3 captured airlines.
- First departure
- 07:45
- Last departure
- 22:29
- Cadence
- ~hourly
- Captured departures/day
- 21
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Southwest Airlines | 3-4/day | Boeing 737 · Seat map | 07:4507:5007:55 |
Aircraft on this route
Flying the other way?
ONT to DEN flights — 8-9/day on 3 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for DEN to ONT, last seen June 15, 2026. Frequency uses 60 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from DEN to ONT?
The DEN to ONT flight time is estimated at about 2h 16m from great-circle distance until enough tracked flights are available.
How far is DEN from ONT?
DEN to ONT is about 818 miles by air.
Which airlines fly from DEN to ONT?
Our current provider sample for DEN to ONT includes Southwest Airlines, United Airlines, Frontier Airlines. Confirm live timetables before booking.
What aircraft fly from DEN to ONT?
Aircraft captured in our current provider sample for DEN to ONT include Airbus A320 family, Boeing 737, Boeing 737, Airbus A320 family.