Denver (DEN) to Houston (IAH)
Flight time
≈ 2h 31m
Bearing
139° SE
Denver (DEN) to Houston (IAH) is 862 miles (1,387 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies DEN–IAH
Filed traffic dataIn July 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop DEN–IAH; the Airbus A321neo was the most common aircraft at 56% of departures; flights ran 86% full.
Departures
882
July 2026
Seats
180,831
both directions
Passengers
155,028
both directions
Load factor
85.7%
RPM ÷ ASM
Who flies DEN–IAH?
United Airlines operated the most nonstop DEN–IAH departures in July 2026 (727), one of 3 carriers on the route.
- UA
727 departures · 148,105 seats
Share of departures82.4%86.7%
Load
- F9
154 departures · 32,656 seats
Share of departures17.5%81.6%
Load
- OO
1 departures · 70 seats
Share of departures0.1%0.0%
Load
What plane flies DEN–IAH?
In July 2026, the Airbus A321neo flew 56% of DEN–IAH departures — more than any other aircraft type.
- Airbus A321neo
498 departures · 84.1% load
56.5% - Boeing 757-300
174 departures · 88.7% load
19.7% - Boeing 737-900ER
115 departures · 89.4% load
13.0% - Airbus A320neo
54 departures · 85.2% load
6.1% - Boeing 737 MAX 9
16 departures · 91.3% load
1.8% - Airbus A321
8 departures · 75.2% load
0.9% - Airbus A320
6 departures · 80.8% load
0.7% - Boeing 737-800
6 departures · 82.0% load
0.7% - Boeing 757-200
2 departures · 98.0% load
0.2% - Boeing 737-700
1 departures · 34.1% load
0.1% - Embraer E175
1 departures · 0.0% load
0.1% - Boeing 737 MAX 8
1 departures · 72.3% load
0.1%
How has DEN–IAH traffic changed?
Nonstop DEN–IAH departures rose from 811 in August 2025 to 882 in July 2026.
Monthly nonstop DEN–IAH traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
811 departures · 137,462 passengers
84.5%
Load
September 2025
771 departures · 124,578 passengers
84.7%
Load
October 2025
806 departures · 136,408 passengers
85.0%
Load
November 2025
716 departures · 129,853 passengers
78.5%
Load
December 2025
793 departures · 150,599 passengers
87.2%
Load
January 2026
786 departures · 134,072 passengers
84.3%
Load
February 2026
705 departures · 126,937 passengers
85.4%
Load
March 2026
816 departures · 138,956 passengers
81.7%
Load
April 2026
724 departures · 123,402 passengers
80.1%
Load
May 2026
833 departures · 139,953 passengers
82.5%
Load
June 2026
862 departures · 144,702 passengers
83.3%
Load
July 2026
882 departures · 155,028 passengers
85.7%
Load
By direction
Each direction is filed separately — they rarely match.
DEN → IAH
85.0% full
445 departures · 76,898 passengers
IAH → DEN
86.5% full
437 departures · 78,130 passengers
Nonstop DEN–IAH traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Denver (DEN) from Houston (IAH)?
DEN to IAH is 862 miles (1,387 km / 749 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DEN to IAH?
A nonstop covers the 862-mile great-circle distance in roughly 2h 31m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DEN–IAH?
In July 2026, the Airbus A321neo flew the largest share of departures (56.5%), followed by the Boeing 757-300 (19.7%).
What mileage do I earn flying DEN–IAH?
Distance-based programs credit off the 862-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Keep exploring
Every route below is its own page.
Popular long-haul routes