Route · CMH → IAH · 2020–2025 BTS data
Columbus to Houston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CMH to IAH (Columbus to Houston) ranks #2812 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 79.2%
- On-time
- +0.2 pts
- vs US avg
- 79 min
- Delay when late
- 4,229
- Flights
- #2812 of 4927
- Corpus placement
Cancelled
1.8%
Best Month
Oct 2024 90%
Worst Month
Jul 2024 59%
Distance
986 mi
Carriers
13
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 42 | 16 | 0 | 0 | UA |
| Nov 2025 | 59 | 18 | 0 | 0 | UA |
| Oct 2025 | 62 | 13 | 0 | 0 | UA |
| Sep 2025 | 56 | 13 | 0 | 0 | UA |
| Aug 2025 | 53 | 15 | 1 | 0 | UA |
| Jul 2025 | 53 | 21 | 0 | 0 | UA |
| Jun 2025 | 55 | 20 | 1 | 0 | UA |
| May 2025 | 38 | 6 | 1 | 0 | UA |
| Apr 2025 | 30 | 3 | 0 | 0 | UA |
| Mar 2025 | 31 | 2 | 0 | 0 | UA |
| Feb 2025 | 38 | 10 | 0 | 0 | UA |
| Jan 2025 | 53 | 19 | 3 | 0 | UA |
| Dec 2024 | 47 | 14 | 1 | 0 | UA |
| Nov 2024 | 57 | 10 | 0 | 0 | UA |
| Oct 2024 | 58 | 6 | 0 | 0 | UA |
| Sep 2024 | 56 | 7 | 0 | 0 | UA |
| Aug 2024 | 60 | 8 | 0 | 0 | UA |
| Jul 2024 | 61 | 25 | 6 | 0 | UA |
| Jun 2024 | 58 | 19 | 3 | 0 | UA |
| May 2024 | 40 | 17 | 0 | 1 | UA |
| Apr 2024 | 30 | 4 | 0 | 0 | UA |
| Mar 2024 | 36 | 5 | 0 | 0 | UA |
| Feb 2024 | 56 | 9 | 0 | 0 | UA |
| Jan 2024 | 60 | 13 | 5 | 0 | UA |
CMH–IAH seasonal on-time pattern
Best: October (87.3%) · weakest: June (68.7%)
Strongest calendar month
October
87.3% on-time · ~66 flights/mo
Busiest calendar month
January
~68 flights/mo avg
Weakest calendar month
June
68.7% on-time · ~64 flights/mo
Cancellation Rate
1.8%
21 of 1,189 flights
Diversion Rate
0.1%
1 of 1,189 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
CMH - Columbus
Full on-time, delay-cause, and seasonal performance for Columbus, OH.
CMH on-time profileIAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profileCompare the two airports
See CMH and IAH side by side on delays, cancellations, and reliability.
Compare CMH vs IAHOrigin-hub reliability standing
Mid-pack among CMH departures
From CMH, this corridor sits with 19 other 75–85% on-time routes out of 33 tracked departures, not the hub's reliability leaders (13 at ≥85%) and not the softest ( 1 below 75%). Destination: Houston · fleet on-time rank #3435 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to CMH–IAH.
Routes with a similar on-time rate
What the Data Says About CMH to IAH
4,229 tracked flights put the CMH to IAH pairing (Columbus to Houston) at a 79.2% on-time rate, squarely in line with the wider network. Delays that do occur run 78.8 minutes on average. Across the 986-mile route and its 13 carriers, the trailing 24 months show 1.8% cancelled and 0.1% diverted (1,189 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 90% on-time, while Jul 2024 came in at just 59% - a 31-point swing worth factoring into travel timing.
On the multi-year calendar, CMH–IAH peaks in October at 87.3% on-time while January carries the heaviest traffic (~68 flights per month) ; the softest month is June at 68.7%, a 18.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does CMH to IAH rank among US routes by traffic? ▼
How often are flights delayed from CMH to IAH? ▼
What is the cancellation rate for CMH to IAH? ▼
How far is the flight from CMH to IAH? ▼
When is the best time to fly from CMH 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 CMH–IAH data
CMH–IAH is mid-pack at 79.2% on-time; month and carrier mix move more than the corridor headline.
- Compare CMH and IAH airport profiles: delay causes and top routes differ even on the same corridor. CMH airport
- If your dates flex, October (87.3% on-time) beats June (68.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 79.2% 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.