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A nonstop flight from Houston to Denver generally takes approximately **2 hours 27 minutes to 2 hours 49 minutes**. The exact duration depends on the Houston departure airport, airline timetable, weather, wind direction and air-traffic conditions.
Passengers can depart from either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU). All regular nonstop services arrive at Denver International Airport (DEN).
Flights from IAH to Denver take approximately **2 hours 49 minutes** and are operated by United Airlines and Frontier Airlines. Southwest Airlines provides nonstop flights from Hobby Airport, with an average journey time of approximately **2 hours 27 minutes**.
One-stop itineraries commonly take around **4 to 7 hours or longer**, depending on the connecting airport and layover. Since several nonstop departures are available, direct flights are usually the quickest option.
| Departure Airport | Arrival Airport | Route Code | Estimated Journey Time |
|---|---|---|---|
| George Bush Intercontinental Airport | Denver International Airport | IAH–DEN | Approximately 2 hrs 49 mins nonstop |
| William P. Hobby Airport | Denver International Airport | HOU–DEN | Around 2 hrs 27 mins on a direct flight |
| George Bush Intercontinental or William P. Hobby Airport | Denver International Airport | IAH/HOU–DEN | Usually 4–7 hrs or longer with one connection |
These times are estimates. Airline schedules, weather, air traffic and connection lengths may affect the final journey duration.
Denver is **one hour behind Houston**. Houston follows Central Time, while Denver observes Mountain Time.
Both cities change their clocks for daylight saving time on the same schedule, so the one-hour difference remains consistent throughout the year.
When the local time in Houston is 9:00 AM, Denver’s clock shows 8:00 AM. A flight leaving Houston at 9:00 AM and taking 2 hours 49 minutes would arrive at approximately 10:49 AM Denver time, subject to the official schedule.
Passengers normally reach Denver on the same calendar day as their departure from Houston.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Houston Flight Times.