Carrier route record

OOAUS→BNA

SkyWest Airlines · Austin to Nashville

Flights: 1,009
Period: July 2025 to June 2026
Share of route: 33%
Carriers: 2

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on AUS to BNA lands a B+, 2 points worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 1,009 flights, with a median arrival 6 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on AUS to BNA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

76.1%

Arrivals under 15 minutes late, of 1,003 completed flights

Avg delay

92 min

Across delayed arrivals only, not all flights

Cancelled

0.50%

National rate is 1.81%

Whole route

76.0%

Every carrier on AUS to BNA, 3,013 flights

These figures cover 1,009 flights between July 2025 and June 2026. Beyond the headline rate, 11.7% 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 AUS to BNA

SkyWest flew 1,009 of the 3,013 flights on AUS to BNA, about 33% of it. Its 76.1% on time is about level with the route as a whole at 76.0%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 76.1% to Southwest at 76.0%.

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.

On-time performance by carrier on AUS to BNA
Airline	Flights	On time	Avg delay	Cancelled	Grade
SkyWest Airlines (this page)	1,009	76.1%	92 min	0.50%	B+
Southwest Airlines	2,004	76.0%	49 min	0.70%	B+

Flight by flight

SkyWest flight numbers on AUS to BNA

OO 416319:3071.5% · 311 flights

Departure window

When SkyWest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am142 flights81.0%
8am–11am218 flights86.2%
11am–2pm—
2pm–5pm318 flights73.0%
5pm–8pm284 flights69.1%
8pm–5am47 flights76.6%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 86.2% of the time, against 69.1% for the evening window. That is 17 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 318 flights scheduled in it.

Across the year

SkyWest on AUS to BNA through the year

Darker means more delays. Figures are on-time percentages.February best, July worst

July is the worst month at 66.7% on time, 19 points below February, the best at 85.9%. 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. March was the busiest month here, with 89 flights.

Across the week, Friday is the strongest day at 80.0% on time and Sunday the weakest at 69.2%. 11 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 60% of the 22,000 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.

Carrier
60%
National Airspace System
23%
Extreme weather
17%
Security
0%

Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 22,181 reported delay minutes.

The largest share of delay minutes, 60%, 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 13,000 of the 22,000 delay minutes reported here.

Cancellations are rare at 0.50%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

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. 11.7% 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 756 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 82.9% on time across 1,010 flights, 7 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 7 points of difference.

One caution: this is a thin sample. 1,009 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 AUS to BNA

Put together: treat all of this as provisional. 1,009 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 76.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,003 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures