Route · TYS → IAH · 2020–2025 BTS data
Knoxville to Houston
The TYS–IAH corridor (Knoxville, TN → Houston, TX) runs ahead of the national average, served by 4 carriers across roughly 771 miles.
Data updated 2026-06-13
- 92.3%
- On-time
- +13.3 pts
- vs US avg
- 71 min
- Delay when late
- 561
- Flights
Cancelled
4.8%
Best Month
Mar 2020 97%
Worst Month
Jan 2020 87%
Distance
771 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2020 | 31 | 4 | 0 | 1 | YV,OO |
| Sep 2020 | 86 | 5 | 0 | 0 | EV |
| Aug 2020 | 59 | 2 | 3 | 0 | EV |
| Jul 2020 | 31 | 3 | 0 | 0 | EV |
| Jun 2020 | 30 | 4 | 0 | 0 | EV |
| May 2020 | 31 | 4 | 0 | 0 | EV |
| Apr 2020 | 36 | 2 | 8 | 0 | EV |
| Mar 2020 | 89 | 3 | 15 | 0 | EV,YV |
| Feb 2020 | 81 | 5 | 0 | 1 | YV,EV |
| Jan 2020 | 87 | 11 | 1 | 1 | EV,YV |
Cancellation Rate
4.8%
27 of 561 flights
Diversion Rate
0.5%
3 of 561 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
TYS - Knoxville
Full on-time, delay-cause, and seasonal performance for Knoxville, TN.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See TYS and IAH side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to TYS–IAH.
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What the Data Says About TYS to IAH
Knoxville to Houston (TYS to IAH) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 92.3% on-time rate across 561 flights, with delays that do happen averaging 70.9 minutes. The corridor runs roughly 771 miles and is served by 4 carriers. Over the most recent 24 months, 27 of 561 flights were cancelled (4.8%) and 3 diverted (0.5%).
Monthly performance varies moderately here: Mar 2020 was the strongest month at 97% on-time versus Jan 2020 at 87%, a 9-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.