Houston (IAH) to Cleveland (CLE): On-Time Performance
Data through May 2026
The calendar drives reliability on IAH–CLE. January 2026 flights landed on schedule 95% of the time, but July 2024 dropped to 55% — a gap of 40 points. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 76%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 2.3
- last 12 months
- Duration
- 2h 49m
- scheduled
- Distance
- 1,091 mi
Best airline from IAH to CLE
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 83% | 11 min | 0.8% | 1,954 |
| Frontier Airlines | 52% | 50 min | 4.5% | 66 |
Monthly on-time trend
Best time to fly from IAH to CLE
Aim for departures around 7 a.m. (91% on-time); avoid 7 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 17 min |
| Tuesday | 85% | 10 min |
| Wednesday | 85% | 12 min |
| Thursdaybest | 86% | 10 min |
| Friday | 85% | 9 min |
| Saturday | 81% | 15 min |
| Sunday | 79% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft48%
- Airline operations35%
- National airspace system9%
- Weather8%
Frequently asked questions
- How often are flights from IAH to CLE delayed?
- 18% of IAH–CLE 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 12 minutes.
- Which airline is most reliable from IAH to CLE?
- United Airlines has the best on-time record on this route at 83%, based on 1,954 flights. 2 airlines flew IAH–CLE frequently enough to compare in this period.
- What is the best time of day to fly from IAH to CLE?
- Departures around 7 a.m. have the best record (91% on-time), while departures around 7 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to CLE?
- The scheduled IAH–CLE flight time averages 2h 49m over 1,091 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are IAH to CLE flights cancelled?
- 0.9% 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 IAH to CLE?
- July 2024 was the roughest month in this dataset, with only 55% of arrivals on time. The best was January 2026 at 95%. If your dates are flexible, that 40-point gap is worth planning around.
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Based on 2,038 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.