Flight profile · Republic Airways
YX4596
Nashville (BNA) to Raleigh–Durham (RDU) · scheduled 4:59 PM – 7:17 PM
How YX4596 performs
617 operations, September 2024 – July 2026.
YX4596 arrived on time 71.2% of the time, against 79.2% for all BNA → RDU flights, so this departure is 8.0 percentage points worse than the route as a whole. Against Republic Airways’ own flights on this route it is 9.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 617 operations, September 2024 – July 2026 · If YX4596 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX4596 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 |
|---|---|---|---|---|---|
| YX4596 | 71.2% | 3.57% | -1 min | 11.0% | 617 |
| Republic Airways on BNA → RDU | 80.4% | 2.11% | -5 min | 6.4% | 2,419 |
| All BNA → RDU flights | 79.2% | 1.30% | -4 min | 6.4% | 6,842 |
YX4596 has cancelled 3.57% of its scheduled departures (22 of 617), against 1.30% for all BNA → RDU flights — this specific departure cancels 2.3 percentage points more often than the route as a whole. Different flight numbers on the same route can carry different aircraft, crews and schedules, so this is a fact about YX4596 specifically, not about the route it flies.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026
Why YX4596 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for YX4596 on BNA → RDU. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX4596 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, YX4596 pushed back an average of 55 minutes late; when it came in on time or early, an average of 3 minutes early.
Each departure is matched to the flight the same aircraft flew into BNA just before it, using the tail number in the DOT file, 585 of 595 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
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 |
|---|---|---|---|
| YX4596 | 24% | 86% | 4% |
| Network, same turn | 18% | 92% | 12% |
The schedule leaves little slack between the inbound landing and this departure, so a late arrival has almost nowhere to go but into the departure.
The network row is every flight with a scheduled turn of 30 to 44 minutes. How often YX4596’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often YX4596 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – July 2026
From pushback to gate
When it leaves BNA late, does that still matter by the time it reaches RDU?
On arrival at RDU, YX4596 spends 12.8 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 5.8 minutes longer than a typical RDU arrival (6.9 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached RDU. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 19,042 departures from BNA scheduled in the clock hour YX4596 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at RDU (179,931 flights), not just YX4596’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026
The hour it leaves BNA
Part of any flight’s record belongs to the clock rather than to the flight. YX4596 has one departure time, so this is what that time is worth.
On-time arrival rate. 19,042 departures from BNA are scheduled in the 4 PM–5 PM hour over the period, against 319,645 across the whole day.
YX4596 is scheduled out of BNA at 4:59 PM, in the 4 PM–5 PM bank. Departures from BNA in that hour arrive on time 68.3% of the time against 78.3% across the airport’s whole day — the slot alone is worth 10.0 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from BNA to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes YX4596 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| RDU→LGA Raleigh–Durham to New York | April 7, 2026 – May 20, 2026 | 43 | — |
| JAX→DCA Jacksonville to Washington | April 5, 2024 | 1 | — |
| BOS→EYW Boston to Key West | February 17–24, 2024 | 2 | — |
| ORD→SRQ Chicago to Sarasota/Bradenton | January 13, 2024 – February 10, 2024 | 5 | — |
| SRQ→ORD Sarasota/Bradenton to Chicago | January 13, 2024 – February 10, 2024 | 5 | — |
| MIA→IND Miami to Indianapolis | December 23, 2023 – January 6, 2024 | 3 | — |
| JAX→MIA Jacksonville to Miami | December 9–16, 2023 | 2 | — |
| MIA→JAX Miami to Jacksonville | December 9–16, 2023 | 2 | — |
| PHL→SYR Philadelphia to Syracuse | November 5, 2023 – December 3, 2023 | 28 | — |
| LGA→IND New York to Indianapolis | July 3, 2023 – November 3, 2023 | 96 | 85.4% |
| IND→LGA Indianapolis to New York | August 4–14, 2023 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4596 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
64 min late
against a median of 1 min early
YX4596 has an average that understates its risk: a typical arrival is 1 min early, but the worst tenth are 65 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 617 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX4567 | Republic Airways | 84.6% | 8 min early | 830 |
| YX4596 this flight | Republic Airways | 71.2% | 1 min early | 617 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. YX4596 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 617 records of YX4596 operating BNA → RDU, 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 excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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