Houston (IAH) to Charlotte (CLT): On-Time Performance
Data through July 2026
The calendar drives reliability on IAH–CLT. January 2026 flights landed on schedule 91% of the time, but July 2024 dropped to 48% — a gap of 43 points. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 69%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 2.4%
- Flights/day
- 6.4
- last 12 months
- Duration
- 2h 37m
- scheduled
- Distance
- 912 mi
Best airline from IAH to CLT
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 81% | 23 min | 2.3% | 3,491 |
| SkyWest Airlines | 76% | 14 min | 1.7% | 116 |
| United Airlines | 75% | 18 min | 1.3% | 1,111 |
| Spirit Airlines | 74% | 21 min | 3.7% | 107 |
| Frontier Airlines | 67% | 21 min | 5.3% | 395 |
Monthly on-time trend
Best time to fly from IAH to CLT
Aim for departures around 11 a.m. (92% on-time); avoid 1 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 23 min |
| Tuesday | 80% | 19 min |
| Wednesdaybest | 83% | 21 min |
| Thursday | 78% | 20 min |
| Friday | 77% | 24 min |
| Saturday | 79% | 24 min |
| Sunday | 78% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations32%
- National airspace system13%
- Weather8%
Frequently asked questions
- How often are flights from IAH to CLT delayed?
- 22% of IAH–CLT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 22 minutes.
- Which airline is most reliable from IAH to CLT?
- American Airlines has the best on-time record on this route at 81%, based on 3,491 flights. 5 airlines flew IAH–CLT frequently enough to compare in this period.
- What is the best time of day to fly from IAH to CLT?
- Departures around 11 a.m. have the best record (92% on-time), while departures around 1 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to CLT?
- The scheduled IAH–CLT flight time averages 2h 37m over 912 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are IAH to CLT flights cancelled?
- 2.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from IAH to CLT?
- July 2024 was the roughest month in this dataset, with only 48% of arrivals on time. The best was January 2026 at 91%. If your dates are flexible, that 43-point gap is worth planning around.
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Based on 5,221 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.