Cleveland (CLE) to Houston (IAH): On-Time Performance
Data through May 2026
When you fly CLE to IAH matters as much as anything else about the booking: the route swung from 98% on-time in September 2024 to just 70% in July 2024. Across the full period the route averages 88% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 82%), which matters most in the rough months.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 2.3
- last 12 months
- Duration
- 3h 12m
- scheduled
- Distance
- 1,091 mi
Best airline from CLE to IAH
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 88% | 7 min | 0.7% | 1,952 |
| Frontier Airlines | 65% | 25 min | 4.5% | 66 |
Monthly on-time trend
Best time to fly from CLE to IAH
Aim for departures around 1 p.m. (97% on-time); avoid 6 p.m. departures (82%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 8 min |
| Tuesday | 88% | 5 min |
| Wednesdaybest | 89% | 8 min |
| Thursday | 88% | 6 min |
| Friday | 88% | 8 min |
| Saturday | 86% | 11 min |
| Sunday | 88% | 7 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations30%
- National airspace system41%
- Weather2%
Frequently asked questions
- How often are flights from CLE to IAH delayed?
- 13% of CLE–IAH flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 8 minutes.
- Which airline is most reliable from CLE to IAH?
- United Airlines has the best on-time record on this route at 88%, based on 1,952 flights. 2 airlines flew CLE–IAH frequently enough to compare in this period.
- What is the best time of day to fly from CLE to IAH?
- Departures around 1 p.m. have the best record (97% on-time), while departures around 6 p.m. have the worst (82%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CLE to IAH?
- The scheduled CLE–IAH flight time averages 3h 12m over 1,091 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are CLE to IAH flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from CLE to IAH?
- July 2024 was the roughest month in this dataset, with only 70% of arrivals on time. The best was September 2024 at 98%. If your dates are flexible, that 28-point gap is worth planning around.
Explore related pages
More routes from CLE
Based on 2,036 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.