Carrier route record
OOIAH→BNA
SkyWest Airlines · Houston to Nashville
- Flights
- 394
- 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 IAH to BNA sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 394 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.6%, so SkyWest on IAH to BNA runs 9 points behind the country as a whole. Across a thousand flights that is about 86 extra late arrivals.
Key figures
On time
69.0%
Arrivals under 15 minutes late, of 390 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
1.02%
National rate is 1.81%
Whole route
72.2%
Every carrier on IAH to BNA, 1,405 flights
These figures cover 394 flights between July 2025 and June 2026. Beyond the headline rate, 11.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on IAH to BNA
SkyWest flew 394 of the 1,405 flights on IAH to BNA, about 28% of it. Its 69.0% on time is 3 points worse than the route as a whole, which runs 72.2%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 73.9% to Spirit at 41.7%. 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 |
|---|---|---|---|---|---|
| United Airlines | 998 | 73.9% | 61 min | 0.50% | C+ |
| SkyWest Airlines (this page) | 394 | 69.0% | 77 min | 1.02% | C |
| Spirit Airlinesthin sample | 13 | 41.7% | 39 min | 7.69% | F− |
Flight by flight
SkyWest flight numbers on IAH to BNA
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 394 flights.
There are not enough flights in each departure window to split SkyWest's IAH to BNA record by time of day without the percentages moving on noise. The headline rate of 69.0% is the reliable figure here.
Across the year
SkyWest on IAH to BNA through the year
September is the best month on the calendar at 90.0% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. April was the busiest month here, with 53 flights.
Across the week, Wednesday is the strongest day at 75.0% on time and Thursday the weakest at 63.2%. 12 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 9,275 reported delay minutes.
- 41%Carrier
- 24%Late-arriving aircraft
- 19%National Airspace System
- 16%Extreme weather
Extreme weather accounts for 16% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.6 times the usual weather exposure. The split is drawn from 9,275 reported delay minutes.
The largest share of delay minutes, 41%, 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 3,774 of the 9,275 delay minutes reported here.
Cancellations sit at 1.02% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
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 87.4% on time across 395 flights, 18 points above 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. 394 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 IAH to BNA
Put together: treat all of this as provisional. 394 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 69.0% 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
- IAH to BNA, every carrier
- SkyWest on BNA to IAH, the return leg
- United Airlines on IAH to BNA73.9%
- SkyWest Airlines network-wide record
- George Bush Intercontinental (IAH) delay statistics
- Nashville International (BNA) delay statistics
- How often a connection fails at the major US hubs
- Worst months to fly in the US, ranked by the data
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.