Great-circle route ORD ↔ DEN. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample. The two directions are not identical — that is normal on scheduled routes.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ORD → DEN Chicago to Denver |
125/wk | Daily | American Airlines, Frontier Airlines, United Airlines |
| DEN → ORD Denver to Chicago |
117/wk | Daily | American Airlines, Frontier Airlines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 2,065,008 passengers on 12,587 flights between ORD and DEN — about 5,661 a day — filling 84% of the 2,453,818 seats flown. United Air Lines Inc. carried the most passengers (65%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
3 airlines fly the ORD–DEN nonstop, including American Airlines, Frontier Airlines, United Airlines.
Recent scheduled departures on this route have used the Airbus A320, Airbus A319, Boeing 737-800, Boeing 737-900 and 4 other types.
Aircraft assignments change by season and by time of day.
The distance between Chicago O'Hare International Airport and Denver International Airport is 886 miles, or 1,426 kilometres.
| Great-circle distance | 886 mi |
| Kilometres | 1,426 km |
| Nautical miles | 770 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly the route nonstop, with about 242 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 2h 21m in the air. That is a great-circle estimate from the 886-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 125 a week from Chicago to Denver and 117 a week from Denver to Chicago, from our most recent schedule sample.
American Airlines, Frontier Airlines, United Airlines.
In 2025, airlines reported 2,065,008 passengers on 12,587 scheduled flights between ORD and DEN — about 5,661 a day — filling 84% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Airbus A320, Airbus A319, Boeing 737-800, Boeing 737-900. Assignments change by season and by time of day.
