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ONT–DEN · Nonstop
Ontario (Ontario International Airport) to Denver (Denver International Airport).
The estimated flight time from Ontario (ONT) to Denver (DEN) is about 2h 16m, covering 818 miles. Southwest Airlines, United Airlines, and Frontier Airlines fly the route nonstop with 8-9/day departures, from 05:00 to 18:30 local time.
Plan this route| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~2h 16m Estimated from great-circle distance — no tracked flights yet. | 818 mi | Nonstop | 8-9/day From the current provider sample; confirm live timetables before booking. | Domestic |
Southwest Airlines, United Airlines, and Frontier Airlines operate 8-9/day flights from ONT to DEN. Terminal assignments in the captured sample are not confirmed for your flight; check the airline before travel.
| Airline | Captured frequency | Aircraft | Departures (local) |
|---|---|---|---|
| Southwest Airlines | 3-4/day | Boeing 737 · Airline terminal guide (confirm for your flight) · Seat map | 05:4505:5005:5506:0008:0008:0508:1508:5011:5512:5013:2014:2014:3014:5015:10 |
| United Airlines | 2-3/day | Airbus A320 family, Boeing 737 · Airline terminal guide (confirm for your flight) · Seat map | 05:0013:1818:30 |
| Frontier Airlines | 2/day | Airbus A320 family · Seat map | 06:0010:50 |
Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for ONT, refreshed on a rolling basis. Frequency uses 59 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
The estimated flight time from Ontario (ONT) to Denver (DEN) is about 2h 16m, based on the 818-mile flying distance.
Ontario (ONT) to Denver (DEN) is about 818 miles by air.
Yes. Southwest Airlines, United Airlines, and Frontier Airlines fly nonstop from Ontario (ONT) to Denver (DEN), with 8-9/day departures.
Southwest Airlines, United Airlines, and Frontier Airlines fly nonstop from Ontario (ONT) to Denver (DEN).
The ONT–DEN route is flown with Airbus A320 family, Boeing 737.