Flight profile · Republic Airways
YX4495
Nashville (BNA) to Washington (DCA) · scheduled 6:20 PM – 8:59 PM
How YX4495 performs
673 operations, July 2023 – July 2026.
YX4495 arrived on time 71.4% of the time, against 76.7% for all BNA → DCA flights, so this departure is 5.3 percentage points worse than the route as a whole. Against Republic Airways’ own flights on this route it is 9.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 673 operations, July 2023 – July 2026 · If YX4495 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX4495 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 |
|---|---|---|---|---|---|
| YX4495 | 71.4% | 5.65% | -2 min | 10.0% | 673 |
| Republic Airways on BNA → DCA | 80.5% | 2.25% | -8 min | 6.6% | 5,022 |
| All BNA → DCA flights | 76.7% | 2.79% | -5 min | 8.0% | 12,843 |
YX4495 has cancelled 5.65% of its scheduled departures (38 of 673), against 2.79% for all BNA → DCA flights — this specific departure cancels 2.9 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 YX4495 specifically, not about the route it flies.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why YX4495 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 YX4495 on BNA → DCA. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX4495 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, YX4495 pushed back an average of 68 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, 615 of 637 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 |
|---|---|---|---|
| YX4495 | 21% | 73% | 7% |
| 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 YX4495’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often YX4495 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 July 2023 – July 2026
From pushback to gate
When it leaves BNA late, does that still matter by the time it reaches DCA?
On arrival at DCA, YX4495 spends 9.4 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 1.7 minutes longer than a typical DCA arrival (7.6 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 DCA. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 21,324 departures from BNA scheduled in the clock hour YX4495 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DCA (435,126 flights), not just YX4495’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves BNA
Part of any flight’s record belongs to the clock rather than to the flight. YX4495 has one departure time, so this is what that time is worth.
On-time arrival rate. 21,324 departures from BNA are scheduled in the 6 PM–7 PM hour over the period, against 319,645 across the whole day.
YX4495 is scheduled out of BNA at 6:20 PM, in the 6 PM–7 PM bank. Departures from BNA in that hour arrive on time 68.6% of the time against 78.3% across the airport’s whole day — the slot alone is worth 9.7 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 · July 2023 – July 2026 · Hours below 120 departures are not scored.
Other routes YX4495 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 |
|---|---|---|---|
| BNA→RDU Nashville to Raleigh–Durham | March 8, 2026 – April 6, 2026 | 30 | — |
| LGA→DCA New York to Washington | December 5, 2024 – March 7, 2026 | 88 | — |
| ORD→TYS Chicago to Knoxville/Maryville | December 26, 2025 – January 5, 2026 | 9 | — |
| TYS→ORD Knoxville/Maryville to Chicago | December 26, 2025 – January 5, 2026 | 9 | — |
| RDU→LGA Raleigh–Durham to New York | December 19, 2025 | 1 | — |
| CMH→LGA Columbus to New York | November 2, 2025 – December 2, 2025 | 27 | — |
| LGA→CMH New York to Columbus | November 2, 2025 – December 2, 2025 | 27 | — |
| PIT→ORD Pittsburgh to Chicago | October 6, 2025 – November 1, 2025 | 27 | — |
| DCA→LGA Washington to New York | September 3, 2025 – October 5, 2025 | 28 | — |
| MSP→ORD Minneapolis to Chicago | September 1, 2025 | 1 | — |
| ORD→MSP Chicago to Minneapolis | September 1, 2025 | 1 | — |
| DCA→BNA Washington to Nashville | July 1, 2023 – August 2, 2025 | 14 | — |
| ATL→DCA Atlanta to Washington | May 5, 2025 | 1 | — |
| ALB→DCA Albany to Washington | February 17, 2024 – March 2, 2024 | 3 | — |
| DCA→ALB Washington to Albany | February 17, 2024 – March 2, 2024 | 3 | — |
| DCA→BOS Washington to Boston | December 20, 2023 – January 7, 2024 | 16 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4495 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.
58 min late
against a median of 2 min early
YX4495 has an average that understates its risk: a typical arrival is 2 min early, but the worst tenth are 60 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 673 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 673 records of YX4495 operating BNA → DCA, 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
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