Carrier route record
OOBNA→IAH
SkyWest Airlines · Nashville to Houston
- Flights
- 395
- Period
- July 2025 to June 2026
- Share of route
- 28%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on BNA to IAH earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 395 flights, with a median arrival 11 minutes early.
Set against the rest of the country, SkyWest's BNA to IAH record is 10 points better than the US average of 77.6%. That gap is worth roughly 98 fewer late arrivals for every thousand flights.
Key figures
On time
87.4%
Arrivals under 15 minutes late, of 390 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
1.27%
National rate is 1.81%
Whole route
82.7%
Every carrier on BNA to IAH, 1,405 flights
These figures cover 395 flights between July 2025 and June 2026. The median arrival is 11 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
SkyWest against every carrier on BNA to IAH
SkyWest flew 395 of the 1,405 flights on BNA to IAH, about 28% of it. Its 87.4% on time is 5 points better than the route as a whole, which runs 82.7%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 87.4% to Spirit at 8.3%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 395 | 87.4% | 96 min | 1.27% | A |
| United Airlines | 997 | 81.7% | 82 min | 0.70% | B+ |
| Spirit Airlinesthin sample | 13 | 8.3% | 37 min | 7.69% | F− |
Flight by flight
SkyWest flight numbers on BNA to IAH
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 395 flights.
- 5am–8am133 flights87.7%
- 8am–11am245 flights87.7%
- 11am–2pm—
- 2pm–5pm—
- 5pm–8pm17 flights—
- 8pm–5am—
Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.
The 5am–8am window is the strongest at 87.7% on time. The full set of windows spans half a point.
Across the year
SkyWest on BNA to IAH through the year
July is the worst month at 83.3% on time, 10 points below August, the best at 93.5%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. April was the busiest month here, with 53 flights.
Across the week, Saturday is the strongest day at 90.2% on time and Friday the weakest at 83.0%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 59% of the 4,696 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 59%Carrier
- 19%National Airspace System
- 17%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,784 of the 4,696 delay minutes reported here. The split is drawn from 4,696 reported delay minutes.
Cancellations sit at 1.27% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
5.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 657 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 69.0% on time across 394 flights, 18 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 18 points of difference.
One caution: this is a thin sample. 395 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on BNA to IAH
Put together: treat all of this as provisional. 395 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 87.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 390 completed flights over 12 months sit behind that.
Related
Where to go next
- BNA to IAH, every carrier
- SkyWest on IAH to BNA, the return leg
- United Airlines on BNA to IAH81.7%
- SkyWest Airlines network-wide record
- Nashville International (BNA) delay statistics
- George Bush Intercontinental (IAH) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.