Route · IAH → TYS · 2020–2025 BTS data
Houston to Knoxville
The IAH–TYS corridor (Houston, TX → Knoxville, TN) runs ahead of the national average, served by 4 carriers across roughly 771 miles.
Data updated 2026-06-13
- 91.1%
- On-time
- +12.1 pts
- vs US avg
- 57 min
- Delay when late
- 560
- Flights
Cancelled
4.5%
Best Month
Sep 2020 96%
Worst Month
Jan 2020 86%
Distance
771 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2020 | 31 | 5 | 0 | 0 | OO |
| Sep 2020 | 85 | 3 | 0 | 0 | YV,EV |
| Aug 2020 | 60 | 4 | 3 | 1 | EV |
| Jul 2020 | 31 | 7 | 0 | 0 | EV |
| Jun 2020 | 30 | 3 | 0 | 0 | EV |
| May 2020 | 31 | 2 | 0 | 0 | EV |
| Apr 2020 | 36 | 1 | 7 | 0 | EV |
| Mar 2020 | 89 | 4 | 15 | 0 | EV,YV |
| Feb 2020 | 80 | 9 | 0 | 0 | YV,EV |
| Jan 2020 | 87 | 12 | 0 | 1 | YV,EV |
Cancellation Rate
4.5%
25 of 560 flights
Diversion Rate
0.4%
2 of 560 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Origin airport →TYS - Knoxville
Full on-time, delay-cause, and seasonal performance for Knoxville, TN.
Destination airport →Compare the two airports
See IAH and TYS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAH–TYS.
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What the Data Says About IAH to TYS
Houston to Knoxville (IAH to TYS) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.1% on-time rate across 560 flights, with delays that do happen averaging 56.9 minutes. The corridor runs roughly 771 miles and is served by 4 carriers. Over the most recent 24 months, 25 of 560 flights were cancelled (4.5%) and 2 diverted (0.4%).
Monthly performance varies moderately here: Sep 2020 was the strongest month at 96% on-time versus Jan 2020 at 86%, a 10-point difference.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.