Houston (IAH) to Chattanooga (CHA): On-Time Performance
Data through May 2026
Houston (IAH) to Chattanooga (CHA) is a thinner route than most in this dataset — 126 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 67% arrived on time, noticeably below the national average of 78%.
- On-time
- 67%
- arrived <15 min late
- Avg delay
- 38 min
- completed flights
- Cancelled
- 0.0%
- Flights/day
- 0.35
- last 12 months
- Duration
- 2h 5m
- scheduled
- Distance
- 686 mi
Best time to fly from IAH to CHA
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 61% | 42 min |
| Tuesdaybest | 100% | 2 min |
| Wednesday | 83% | 43 min |
| Thursday | 61% | 12 min |
| Friday | 56% | 54 min |
| Saturday | 56% | 45 min |
| Sunday | 50% | 68 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft53%
- Airline operations34%
- National airspace system5%
- Weather7%
Frequently asked questions
- How often are flights from IAH to CHA delayed?
- 33% of IAH–CHA 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 38 minutes.
- How long is the flight from IAH to CHA?
- The scheduled IAH–CHA flight time averages 2h 5m over 686 miles. Actual arrival times vary — flights on this route land 15+ minutes late 33% of the time.
- How often are IAH to CHA flights cancelled?
- 0% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
Explore related pages
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Based on 126 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.