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.
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What actually flies DEN–IAH
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop DEN–IAH; the Airbus A321neo was the most common aircraft at 52% of departures; flights ran 83% full.
Departures
833
May 2026
Seats
169,602
both directions
Passengers
139,953
both directions
Load factor
82.5%
RPM ÷ ASM
Who flies DEN–IAH?
United Airlines operated the most nonstop DEN–IAH departures in May 2026 (668), one of 3 carriers on the route.
- UA
668 departures · 134,438 seats
Share of departures80.2%82.8%
Load
- F9
160 departures · 34,848 seats
Share of departures19.2%82.1%
Load
- OO
5 departures · 316 seats
Share of departures0.6%0.0%
Load
What plane flies DEN–IAH?
In May 2026, the Airbus A321neo flew 52% of DEN–IAH departures — more than any other aircraft type.
- Airbus A321neo
433 departures · 81.5% load
52.0% - Boeing 757-300
136 departures · 88.1% load
16.3% - Boeing 737-900ER
131 departures · 79.3% load
15.7% - Airbus A321
39 departures · 85.7% load
4.7% - Boeing 737 MAX 9
39 departures · 79.9% load
4.7% - Airbus A320neo
39 departures · 82.4% load
4.7% - Airbus A320
7 departures · 87.6% load
0.8% - Embraer E175
3 departures · 0.0% load
0.4% - Boeing 737-800
2 departures · 67.8% load
0.2% - Airbus A319
1 departures · 77.8% load
0.1% - Bombardier CRJ-550
1 departures · 0.0% load
0.1% - Bombardier CRJ-200
1 departures · 0.0% load
0.1% - Boeing 737-700
1 departures · 92.9% load
0.1%
How has DEN–IAH traffic changed?
Nonstop DEN–IAH departures rose from 788 in June 2025 to 833 in May 2026.
Monthly nonstop DEN–IAH traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
788 departures · 144,498 passengers
90.0%
Load
July 2025
809 departures · 153,090 passengers
89.4%
Load
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
By direction
Each direction is filed separately — they rarely match.
DEN → IAH
79.4% full
417 departures · 67,124 passengers
IAH → DEN
85.6% full
416 departures · 72,829 passengers
Nonstop DEN–IAH traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 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 May 2026, the Airbus A321neo flew the largest share of departures (52.0%), followed by the Boeing 757-300 (16.3%).
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.
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