Flight number record

OO 4163

SkyWest Airlines · Austin to Nashville

Route: AUS → BNA
Departs: 19:30
Flights: 317
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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, 5 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 317 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.3%, so OO 4163 runs 5 points behind the country as a whole. Across a thousand flights that is about 47 extra late arrivals.

On time

72.6%

Arrivals under 15 minutes late, of 314 completed flights

Avg delay

86 min

Across delayed arrivals only, not all flights

Cancelled

0.63%

National rate is 1.89%

1 hour+ late

11.8%

National rate is 8.3%

These figures cover 317 flights between September 2025 and August 2026. Beyond the headline rate, 11.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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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 64 of 317 flights.

Departs 19:3064 flights20.2%

Scale runs 0% to 100%.

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 68.0%, and OO 4163 runs 5 points better at 72.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

OO 4163 next to AUS to BNA

Every carrier on AUS to BNA combined arrived on time 75.5% of the time across 3,017 flights, so OO 4163 is 3 points behind it. SkyWest flew 1,009 flights on the same city pair under all its flight numbers, including this one, and those ran 76.8% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 6 points.

OO 4163 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4163thin sample	317	72.6%	86 min	0.63%	C+
All SkyWest Airlines on AUS–BNA	1,009	76.8%	86 min	0.50%	B+
All carriers on AUS–BNA	3,017	75.5%	61 min	0.63%	B+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	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 2026 at 62.5%, a swing of 21 points on roughly 63 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 202530 flights73.3%
Oct–Dec 202578 flights74.4%
Jan–Mar 202675 flights83.6%
Apr–Jun 202677 flights67.5%
Jul–Sep 202657 flights62.5%

Scale runs 55% to 90%.

By weekday, OO 4163 did best on Monday at 83.0% on time and worst on Sunday at 61.7%. Each day rests on about 45 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 4163 runs when it is late

OO 4163 often beats the schedule: 86 of 314 completed flights, 27%, arrived 15 minutes or more early. The 86 late arrivals split 29 under half an hour, 20 between 30 and 60 minutes, and 37 an hour or more.

15+ min early86 flights27.4%
Within 15 min142 flights45.2%
15–29 min late29 flights9.2%
30–59 min late20 flights6.4%
1–2 hours late20 flights6.4%
2+ hours late17 flights5.4%

Scale runs 0% to 100%.

Share of 314 completed flights by arrival against schedule.

10 of 79 late departures made up the time and arrived on time, 13% of them. In the other direction, 17 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at BNA.

The worst days

Worst days for OO 4163

The latest arrival of the period was on 21 May 2026, 20 hours 50 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in May 2026.

The latest arrivals of OO 4163 in the period
Date	Arrived late by	Largest filed cause
21 May 2026	20 hours 50 minutes	Carrier
15 March 2026	4 hours 41 minutes	National Airspace System
31 May 2026	4 hours 3 minutes	Carrier
23 February 2026	3 hours 25 minutes	Carrier
22 May 2026	3 hours 19 minutes	Carrier

Delay causes

Why OO 4163 runs late

Carrier accounts for 62% of the 7,353 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
62%
National Airspace System
25%
Extreme weather
13%

Extreme weather accounts for 13% 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 7,353 delay minutes reported on OO 4163.

Cancellations are rare at 0.63%, below the national 1.89% 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

11.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.

Every one of the 317 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. 317 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, read OO 4163 as 72.6% on time with 0.63% cancelled over 317 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures