Houston (IAH) to Oklahoma City (OKC)
Flight time
≈ 1h 36m
Bearing
341° N
Houston (IAH) to Oklahoma City (OKC) is 396 miles (637 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAH–OKC
Filed traffic dataIn July 2026, Mesa Airlines operated the most departures, one of 5 carriers flying nonstop IAH–OKC; the Embraer E175 was the most common aircraft at 58% of departures; flights ran 84% full.
Departures
460
July 2026
Seats
37,352
both directions
Passengers
31,371
both directions
Load factor
84.0%
RPM ÷ ASM
Who flies IAH–OKC?
Mesa Airlines operated the most nonstop IAH–OKC departures in July 2026 (146), one of 5 carriers on the route.
- YV
146 departures · 10,652 seats
Share of departures31.7%83.4%
Load
- C5
128 departures · 6,400 seats
Share of departures27.8%96.3%
Load
- OO
125 departures · 9,430 seats
Share of departures27.2%84.5%
Load
- UA
60 departures · 10,740 seats
Share of departures13.0%76.6%
Load
- DL
1 departures · 130 seats
Share of departures0.2%96.2%
Load
What plane flies IAH–OKC?
In July 2026, the Embraer E175 flew 58% of IAH–OKC departures — more than any other aircraft type.
- Embraer E175
269 departures · 84.4% load
58.5% - Embraer ERJ-145
128 departures · 96.3% load
27.8% - Boeing 737-900
52 departures · 77.4% load
11.3% - Boeing 737-900ER
6 departures · 77.3% load
1.3% - Bombardier CRJ-200
2 departures · 0.0% load
0.4% - Boeing 737 MAX 9
2 departures · 53.6% load
0.4% - Airbus A220-300
1 departures · 96.2% load
0.2%
How has IAH–OKC traffic changed?
Nonstop IAH–OKC departures rose from 450 in August 2025 to 460 in July 2026.
Monthly nonstop IAH–OKC traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
450 departures · 26,342 passengers
77.8%
Load
September 2025
428 departures · 25,814 passengers
77.7%
Load
October 2025
476 departures · 28,882 passengers
73.9%
Load
November 2025
462 departures · 25,051 passengers
68.0%
Load
December 2025
399 departures · 24,628 passengers
76.4%
Load
January 2026
376 departures · 23,329 passengers
80.1%
Load
February 2026
402 departures · 24,868 passengers
77.7%
Load
March 2026
414 departures · 23,112 passengers
69.3%
Load
April 2026
408 departures · 24,239 passengers
72.1%
Load
May 2026
460 departures · 30,505 passengers
79.2%
Load
June 2026
448 departures · 31,182 passengers
79.1%
Load
July 2026
460 departures · 31,371 passengers
84.0%
Load
By direction
Each direction is filed separately — they rarely match.
IAH → OKC
84.1% full
230 departures · 15,687 passengers
OKC → IAH
83.8% full
230 departures · 15,684 passengers
Nonstop IAH–OKC 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 Houston (IAH) from Oklahoma City (OKC)?
IAH to OKC is 396 miles (637 km / 344 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAH to OKC?
A nonstop covers the 396-mile great-circle distance in roughly 1h 36m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAH–OKC?
In July 2026, the Embraer E175 flew the largest share of departures (58.5%), followed by the Embraer ERJ-145 (27.8%).
What mileage do I earn flying IAH–OKC?
Distance-based programs credit off the 396-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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