Direct (nonstop) flights from Denver to Houston
2 airlines fly nonstop from Denver International (DEN) to George Bush Intcntl Houston (IAH). It's 861 miles (1,385 km), about 2h 33m in the air. Operated by Frontier Airlines, United Airlines.
Frontier Airlines
United Airlines
Route data last updated: May 28, 2026
Airlines with non-stop flights
F9
Frontier Airlines
UA
United Airlines
Alternative Routes
Other ways to fly from Denver to Houston with one stop · direct emits 159 kg CO₂ per passenger
Looking for the return flight?
IAH → DEN: Flights from Houston to DenverOther direct flights from Denver
Direct flights from Houston (IAH)
Frequently Asked Questions
How long is the direct flight from Denver to Houston?
A nonstop flight from Denver (DEN) to Houston (IAH) takes approximately 2 hours and 33 minutes. The distance is 861 miles (1,385 km).
Which airlines fly nonstop from Denver to Houston?
2 airlines: Frontier Airlines, United Airlines.
Is there a nonstop flight from Denver to Houston?
Yes. 2 airlines: Frontier Airlines, United Airlines.
How far is Denver from Houston?
The flight distance from Denver to Houston is 861 miles (1,385 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Madrid.
What type of aircraft flies from Denver to Houston?
At 2h 33m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Denver to Houston?
Roughly 159 kg CO2 per passenger one-way. That's about the same as driving 795 km.
Is the return flight from Houston to Denver also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Denver to Houston?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Denver International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.