DEN to IAH: Distance and Flight Time
The distance from Denver International Airport (DEN) to George Bush Intercontinental Airport (IAH) is 1,387 km (862 mi). A typical nonstop flight covers it in about 2h 15m, heading southeast. The distance is the same in either direction (IAH to DEN).
How far is it from Denver to Houston?
The great-circle distance between Denver International Airport (DEN) and George Bush Intercontinental Airport (IAH) is 1,387 km (862 mi, 749 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from DEN to IAH?
A nonstop flight typically takes about 2h 15m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. IAH is roughly southeast of DEN.
How is the DEN to IAH route written in code?
The pair is written DEN-IAH in IATA codes and KDEN-KIAH in ICAO codes, the form used on a flight plan. Denver International Airport is DEN (KDEN), George Bush Intercontinental Airport is IAH (KIAH).
| DEN | IAH | |
|---|---|---|
| Airport | Denver International Airport | George Bush Intercontinental Airport |
| ICAO code | KDEN | KIAH |
| Country | United States | United States |
| Elevation | 5,431 ft | 97 ft |
| Rank by connections | #15 | #49 |
Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.
IAH sits 5,334 ft (1,626 m) lower than DEN, which is a real difference in air density on takeoff.
Airlines flying DEN to IAH
3 airlines appear on this route in the open route dataset, 3 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| F9 | Frontier Airlines | FFT | Frontier Flight | Active |
| NK | Spirit Airlines | NKS | Spirit Wings | Active |
| UA | United Airlines | UAL | United | Active |
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Denver from Houston?
Denver International Airport (DEN) and George Bush Intercontinental Airport (IAH) are 1,387 km (862 mi, 749 nautical miles) apart in a straight line.
How long is the flight from DEN to IAH?
A typical nonstop flight between DEN and IAH takes about 2h 15m. Actual times vary with aircraft type, winds and routing.
What direction is IAH from DEN?
George Bush Intercontinental Airport (IAH) lies roughly southeast of Denver International Airport (DEN).
Which airlines fly DEN to IAH?
3 airlines appear on the DEN-IAH route in the open dataset, including Frontier Airlines, Spirit Airlines, United Airlines.
Related routes
Other routes from Denver (DEN):
Other routes from Houston (IAH):
DEN airport code · IAH airport code · Busiest airports worldwide