Flight number record

OO 4163

SkyWest Airlines · Austin to Nashville

Route: AUS → BNA
Departs: 19:30
Flights: 311
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4163, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 4163 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 311 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.6%, so OO 4163 runs 6 points behind the country as a whole. Across a thousand flights that is about 61 extra late arrivals.

On time

71.5%

Arrivals under 15 minutes late, of 309 completed flights

Avg delay

97 min

Across delayed arrivals only, not all flights

Cancelled

0.64%

National rate is 1.81%

1 hour+ late

13.9%

National rate is 8.1%

These figures cover 311 flights between July 2025 and June 2026. Beyond the headline rate, 13.9% 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.

Schedule

When OO 4163 flies

OO 4163 flies AUS to BNA without a single fixed slot. Its most common scheduled departure was 19:30, used on 112 of 311 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:30112 flights36.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 19:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 4163 runs 3 points better at 71.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 4163 next to AUS to BNA

Every carrier on AUS to BNA combined arrived on time 76.0% of the time across 3,013 flights, so OO 4163 is 5 points behind it. SkyWest flew 1,009 flights on the same city pair under all its flight numbers, including this one, and those ran 76.1% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 8 points.

OO 4163 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4163thin sample	311	71.5%	97 min	0.64%	C+
All SkyWest Airlines on AUS–BNA	1,009	76.1%	92 min	0.50%	B+
All carriers on AUS–BNA	3,013	76.0%	64 min	0.63%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4163 quarter by quarter

OO 4163 did not run the same all year. Its best quarter was Jan–Mar 2026 at 83.6% on time and its weakest Jul–Sep 2025 at 61.7%, a swing of 22 points on roughly 78 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202581 flights61.7%
Oct–Dec 202578 flights74.4%
Jan–Mar 202675 flights83.6%
Apr–Jun 202677 flights67.5%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4163 did best on Monday at 78.8% on time and worst on Thursday at 62.0%. Each day rests on about 44 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4163 runs late

One category carries most of the weight here. Carrier accounts for 63% of the 8,526 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
63%
National Airspace System
24%
Extreme weather
14%

Extreme weather accounts for 14% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.2 times the usual weather exposure. The split is drawn from 8,526 delay minutes reported on OO 4163.

Cancellations are rare at 0.64%, 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 routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.9% 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.

Every one of the 311 flights under OO 4163 in the data flew AUS to BNA. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 311 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 OO 4163

For a booking, OO 4163 is a flight to put a long connection behind. 13.9% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

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