Great-circle route DEN → IAH. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
The flight time from Denver to Houston is approximately 2h 18m nonstop. The distance is 862 miles (1,387 km). There are about 20 nonstop flights from Denver to Houston per day.
That is a great-circle estimate, not a scheduled block time. An airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
| Route | Est. time | Distance | Frequency | Airlines |
|---|---|---|---|---|
| DEN → IAH Denver International Airport to George Bush Intercontinental Houston Airport |
2h 18m | 862 mi | 93/wk | Frontier Airlines, United Airlines |
| DEN → HOU Denver International Airport to William P Hobby Airport |
2h 20m | 884 mi | 48/wk | Southwest Airlines |
Frequencies come from our most recent schedule sample. Where a pairing shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
3 airlines fly nonstop from Denver to Houston, including Frontier Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures on this route have used the Boeing 737-900, Airbus A320, Boeing 757-300, Airbus A320 NEO and 3 other types.
Aircraft assignments change by season and by time of day.
The distance from Denver to Houston is 862 miles, or 1,387 kilometres.
| Great-circle distance | 862 mi |
| Kilometres | 1,387 km |
| Nautical miles | 749 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly it nonstop, with about 141 departures a week, across 2 airport pairings. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 2h 18m in the air on the DEN–IAH nonstop. That is a great-circle estimate from the 862-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.
862 miles (1,387 km) great-circle between Denver International Airport and George Bush Intercontinental Houston Airport.
Frontier Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures have used the Boeing 737-900, Airbus A320, Boeing 757-300, Airbus A320 NEO. Assignments change by season and by time of day.
DEN to IAH, DEN to HOU. Flight times differ slightly between them because the airports are not in the same place.
