Flight profile · SkyWest Airlines
OO4146
Nashville (BNA) to Austin (AUS) · scheduled 7:05 AM – 9:45 AM
How OO4146 performs
619 operations, June 2024 – August 2026.
Between its first and last recorded date on BNA → AUS, OO4146 averaged about 5 operations a week (619 in 816 days, cancelled ones included).
OO4146 arrived on time 81.9% of the time, against 80.4% for all BNA → AUS flights, so this departure is 1.5 percentage points better than the route as a whole. Against SkyWest Airlines’ own flights on this route it is 2.8 points better.
Source: US DOT Bureau of Transportation Statistics · 619 operations, June 2024 – August 2026 · If OO4146 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where OO4146 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| OO4146 | 81.9% | 0.65% | -6 min | 7.7% | 619 |
| SkyWest Airlines on BNA → AUS | 79.1% | 0.42% | -5 min | 9.1% | 2,408 |
| All BNA → AUS flights | 80.4% | 0.52% | -6 min | 5.9% | 9,525 |
OO4146 cancelled 4 of 619 operations (0.65%), close to the 0.52% for BNA → AUS.
7.7% of OO4146’s arrivals were an hour or more late, against 5.9% across BNA → AUS, so the long delays are more common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
Why OO4146 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for OO4146 on BNA → AUS. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies OO4146 comes in late, and what that does to the departure.
OO4146 is usually the aircraft’s first flight of the day: the schedule gives it a median of 9.7 hours on the ground at BNA, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, OO4146 pushed back an average of 13 minutes late; when it came in on time or early, an average of 0 minutes late.
Matched by tail number to the aircraft’s previous flight into BNA: 508 of 615 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| OO4146 | 26% | 18% | 9% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground usually absorbs a late arrival, but this flight has passed a late inbound on more often than the network does.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often OO4146’s aircraft landed 15 or more minutes late is lower than the network’s and, once the aircraft was late, how often OO4146 left 15 or more minutes late is higher than the network’s.
Which Flight Numbers Pay for a Late Aircraft ranks the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
From pushback to gate
When it leaves BNA late, does that still matter by the time it reaches AUS?
OO4146 pushes back an average of 7.8 minutes late and reaches the gate at AUS an average of 4.8 minutes late. The 3.0 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. It spends 21.9 minutes on the taxiways at BNA, 4.6 minutes longer than a typical BNA departure in the same hour.
On arrival at AUS, OO4146 spends 7.4 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at AUS spends on the ground before reaching the gate.
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 26,296 BNA departures. Taxi-in is landing to gate, set against 280,105 arrivals at AUS. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
The hour it leaves BNA
OO4146 has one departure time, 7:05 AM, so this is what that hour at BNA is worth.
On-time arrival rate. 26,296 departures from BNA are scheduled in the 7 AM–8 AM hour over the period, against 329,339 across the whole day.
OO4146 is scheduled out of BNA at 7:05 AM, in the 7 AM–8 AM bank. Departures from BNA in that hour arrive on time 87.1% of the time against 78.0% across the airport’s whole day — the slot alone is worth 9.1 points better before anything about this particular flight is considered.
Both airport figures cover every destination from BNA, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes OO4146 has flown
Carriers reassign flight numbers. OO4146 also served these 13 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| BGM→DTW Binghamton to Detroit | June 8, 2025 – December 19, 2025 | 194 | 82.2% |
| DTW→BGM Detroit to Binghamton | June 8, 2025 – December 19, 2025 | 194 | 83.3% |
| DTW→MKE Detroit to Milwaukee | May 7, 2024 – June 6, 2024 | 31 | — |
| DTW→SDF Detroit to Louisville | April 13, 2024 – May 4, 2024 | 4 | — |
| SDF→DTW Louisville to Detroit | April 13, 2024 – May 4, 2024 | 4 | — |
| ORD→JFK Chicago to New York | January 8, 2024 – March 9, 2024 | 62 | — |
| EUG→SLC Eugene to Salt Lake City | December 16, 2023 – January 7, 2024 | 23 | — |
| BOS→JFK Boston to New York | September 9, 2023 – December 15, 2023 | 84 | — |
| ATW→MSP Appleton to Minneapolis | October 28, 2023 – November 4, 2023 | 8 | — |
| AGS→ATL Augusta to Atlanta | September 6–7, 2023 | 2 | — |
| ATL→AGS Atlanta to Augusta | September 6–7, 2023 | 2 | — |
| OMA→MSP Omaha to Minneapolis | July 10, 2023 – September 4, 2023 | 57 | — |
| MSP→CMH Minneapolis to Columbus | July 2–9, 2023 | 7 | — |
The figures above describe only BNA → AUS, the route OO4146 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
40 min late
against a median of 6 min early
Percentiles over 619 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Data and methodology
Calculated by FlyerIntel from 619 records of OO4146 operating BNA → AUS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed