FlightRecord

Houston (IAH) to Chattanooga (CHA): On-Time Performance

Data through July 2026

Houston (IAH) to Chattanooga (CHA) is a thinner route than most in this dataset — 248 departures over the past year, roughly 5 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
40 min
completed flights
Cancelled
0.0%
Flights/day
0.68
last 12 months
Duration
2h 8m
scheduled
Distance
686 mi

Best time to fly from IAH to CHA

By day of week

DayOn-timeAvg delay
Monday56%62 min
Tuesdaybest83%28 min
Wednesday78%35 min
Thursday67%15 min
Friday58%53 min
Saturday68%28 min
Sunday56%57 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft34%
  • Airline operations53%
  • National airspace system6%
  • Weather7%

Frequently asked questions

How often are flights from IAH to CHA delayed?
34% of IAH–CHA 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 40 minutes.
How long is the flight from IAH to CHA?
The scheduled IAH–CHA flight time averages 2h 8m over 686 miles. Actual arrival times vary — flights on this route land 15+ minutes late 34% of the time.
How often are IAH to CHA flights cancelled?
0% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
What day of the week is most reliable for IAH to CHA?
Tuesday flights have the best record at 83% on-time. Day-of-week differences on this route are meaningful — Monday trails at 56%.

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Based on 248 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.