Route · OKC → IAH · 2020–2025 BTS data
Oklahoma City to Houston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), OKC to IAH (Oklahoma City to Houston) ranks #1594 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.7%
- On-time
- +5.7 pts
- vs US avg
- 83 min
- Delay when late
- 7,800
- Flights
- #1594 of 4927
- Corpus placement
Cancelled
1.1%
Best Month
Sep 2025 96%
Worst Month
Jun 2025 70%
Distance
395 mi
Carriers
17
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 107 | 22 | 0 | 1 | UA,OO |
| Nov 2025 | 82 | 18 | 0 | 0 | OO,UA |
| Oct 2025 | 98 | 8 | 0 | 0 | OO,UA |
| Sep 2025 | 80 | 3 | 0 | 0 | UA,OO |
| Aug 2025 | 137 | 29 | 0 | 1 | OO,UA |
| Jul 2025 | 206 | 34 | 2 | 4 | OO,UA |
| Jun 2025 | 167 | 50 | 6 | 2 | OO,UA |
| May 2025 | 134 | 36 | 1 | 0 | OO |
| Apr 2025 | 126 | 33 | 0 | 0 | OO |
| Mar 2025 | 140 | 20 | 0 | 0 | OO |
| Feb 2025 | 81 | 13 | 2 | 1 | OO |
| Jan 2025 | 62 | 13 | 3 | 0 | OO |
| Dec 2024 | 64 | 5 | 1 | 1 | OO |
| Nov 2024 | 81 | 15 | 0 | 1 | OO |
| Oct 2024 | 66 | 5 | 0 | 0 | OO |
| Sep 2024 | 62 | 4 | 0 | 0 | OO |
| Aug 2024 | 75 | 6 | 0 | 0 | OO |
| Jul 2024 | 77 | 16 | 5 | 1 | OO |
| Jun 2024 | 103 | 20 | 1 | 1 | OO,UA |
| May 2024 | 75 | 21 | 2 | 2 | OO,UA |
| Apr 2024 | 56 | 8 | 0 | 0 | OO |
| Jan 2024 | 31 | 6 | 2 | 0 | OO |
| Oct 2023 | 56 | 11 | 0 | 0 | OO |
| Jul 2023 | 48 | 12 | 0 | 0 | OO |
OKC–IAH seasonal on-time pattern
Best: September (89.9%) · weakest: June (80.6%)
Strongest calendar month
September
89.9% on-time · ~117 flights/mo
Busiest calendar month
March
~142 flights/mo avg
Weakest calendar month
June
80.6% on-time · ~116 flights/mo
Cancellation Rate
1.1%
25 of 2,214 flights
Diversion Rate
0.7%
15 of 2,214 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
OKC - Oklahoma City
Full on-time, delay-cause, and seasonal performance for Oklahoma City, OK.
OKC on-time profileIAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profileCompare the two airports
See OKC and IAH side by side on delays, cancellations, and reliability.
Compare OKC vs IAHOrigin-hub reliability standing
Mid-pack among OKC departures
From OKC, this corridor sits with 13 other 75–85% on-time routes out of 21 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 0 below 75%). Destination: Houston · fleet on-time rank #1342 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to OKC–IAH.
Routes with a similar on-time rate
What the Data Says About OKC to IAH
Bureau of Transportation Statistics records show Oklahoma City to Houston (OKC to IAH) running a 84.7% on-time rate over 7,800 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 82.5 minutes. The 395-mile corridor is served by 17 carriers, and over the last 24 months 1.1% of 2,214 flights were cancelled, 0.7% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 96% on-time, while Jun 2025 came in at just 70% - a 26-point swing worth factoring into travel timing.
On the multi-year calendar, OKC–IAH peaks in September at 89.9% on-time while March carries the heaviest traffic (~142 flights per month) ; the softest month is June at 80.6%, a 9.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does OKC to IAH rank among US routes by traffic? ▼
How often are flights delayed from OKC to IAH? ▼
What is the cancellation rate for OKC to IAH? ▼
How far is the flight from OKC to IAH? ▼
When is the best time to fly from OKC to IAH? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using OKC–IAH data
OKC–IAH runs 5.7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare OKC and IAH airport profiles: delay causes and top routes differ even on the same corridor. OKC airport
- If your dates flex, September (89.9% on-time) beats June (80.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.7% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.