Flight number record
YX 4596
Republic Airways · Nashville to Raleigh
- Route
- BNA → RDU
- Departs
- 16:53
- Flights
- 307
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4596, check with Republic Airways. Republic Airways flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
YX 4596 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 307 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so YX 4596 runs 11 points behind the country as a whole. Across a thousand flights that is about 106 extra late arrivals.
Key figures
On time
66.7%
Arrivals under 15 minutes late, of 291 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
4.56%
National rate is 1.89%
1 hour+ late
12.7%
National rate is 8.3%
These figures cover 307 flights between September 2025 and August 2026. Beyond the headline rate, 12.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 4596 flies
YX 4596 flies BNA to RDU without a single fixed slot. Its most common scheduled departure was 16:53, used on 36 of 307 flights, with 17:26 (32 flights) next.
- Departs 16:5336 flights11.7%
- Departs 17:2632 flights10.4%
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 16:53 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 4596 runs 5 points worse at 66.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
YX 4596 next to BNA to RDU
Every carrier on BNA to RDU combined arrived on time 74.8% of the time across 2,223 flights, so YX 4596 is 8 points behind it. Republic flew 956 flights on the same city pair under all its flight numbers, including this one, and those ran 76.7% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4596thin sample | 307 | 66.7% | 69 min | 4.56% | C− |
| All Republic Airways on BNA–RDU | 956 | 76.7% | 61 min | 3.14% | B− |
| All carriers on BNA–RDU | 2,223 | 74.8% | 53 min | 1.89% | C |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4596 quarter by quarter
YX 4596 did not run the same all year. Its best quarter was Jan–Mar 2026 at 70.9% on time and its weakest Oct–Dec 2025 at 55.7%, a swing of 15 points on roughly 77 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 202526 flights—
- Oct–Dec 202582 flights55.7%
- Jan–Mar 202690 flights70.9%
- Apr–Jun 202647 flights67.4%
- Jul–Sep 202662 flights63.0%
Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4596 did best on Wednesday at 77.3% on time and worst on Thursday at 54.8%. Each day rests on about 44 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4596 runs when it is late
The 97 late arrivals split 29 under half an hour, 31 between 30 and 60 minutes, and 37 an hour or more.
- 15+ min early34 flights11.7%
- Within 15 min160 flights55.0%
- 15–29 min late29 flights10.0%
- 30–59 min late31 flights10.7%
- 1–2 hours late25 flights8.6%
- 2+ hours late12 flights4.1%
Scale runs 0% to 100%.
Share of 291 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 75 departures that left 15 minutes late or more, only 5 made it up before arrival. In the other direction, 27 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 RDU.
The worst days
Worst days for YX 4596
The latest arrival of the period was on 21 August 2026, 7 hours 16 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On four of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 August 2026 | 7 hours 16 minutes | Carrier |
| 11 November 2025 | 6 hours 15 minutes | Late-arriving aircraft |
| 16 August 2026 | 5 hours 56 minutes | Late-arriving aircraft |
| 1 December 2025 | 4 hours 8 minutes | Late-arriving aircraft |
| 13 February 2026 | 3 hours 6 minutes | Late-arriving aircraft |
Delay causes
Why YX 4596 runs late
Late-arriving aircraft accounts for 69% of the 6,686 delay minutes carriers reported here, and the remaining four split what is left.
- 69%Late-arriving aircraft
- 15%National Airspace System
- 14%Carrier
- 3%Extreme weather
69% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,686 reported delay minutes here, that single category outweighs weather by 27 to one. The split is drawn from 6,686 delay minutes reported on YX 4596.
Cancellations run at 4.56%, against 1.89% nationally. That is roughly one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
12.7% 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 same number turns up on one other city pair in the data, including RDU to LGA (43), but none flew often enough under YX 4596 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BNA to RDU only.
One caution: this is a thin sample. 307 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 YX 4596
For a booking, the cancellation rate is the figure to plan around on YX 4596: 4.56% of its 307 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BNA to RDU, every carrier and departure
- RDU to BNA, the return direction
- Nashville International (BNA) delay statistics
- Raleigh-Durham International (RDU) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Republic Airways’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 ; recomputed monthly. How this data is collected.