Flight profile · Republic Airways
YX4686
Washington (DCA) to Nashville (BNA) · scheduled 11:34 AM – 11:38 AM
How YX4686 performs
648 operations, February 2024 – July 2026.
YX4686 arrived on time 85.2% of the time, against 78.9% for all DCA → BNA flights, so this departure is 6.3 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 648 operations, February 2024 – July 2026 · If YX4686 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX4686 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| YX4686 | 85.2% | 2.31% | -11 min | 3.5% | 648 |
| Republic Airways on DCA → BNA | 84.8% | 1.55% | -11 min | 5.3% | 5,023 |
| All DCA → BNA flights | 78.9% | 2.51% | -7 min | 8.1% | 12,844 |
Source: FlyerIntel analysis of US DOT BTS data · February 2024 – July 2026
Why YX4686 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
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 YX4686 on DCA → BNA. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering February 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX4686 comes in late, and what that does to the departure.
The aircraft flying YX4686 came in 15 or more minutes late on 17% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into DCA just before it, using the tail number in the DOT file, 596 of 633 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 |
|---|---|
| YX4686 | 17% |
| Network, same turn | 18% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 45 to 59 minutes. How often YX4686’s aircraft landed 15 or more minutes late is about the same as the network’s. There are not enough departures in both groups to compare how it left.
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 February 2024 – July 2026
From pushback to gate
When it leaves DCA late, does that still matter by the time it reaches BNA?
YX4686 pushes back an average of 3.1 minutes late and reaches the gate at BNA an average of 3.3 minutes early. The 6.4 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 23.0 minutes on the taxiways at DCA, 4.5 minutes longer than a typical DCA departure in the same hour.
On arrival at BNA, YX4686 spends 8.8 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 about what any arrival at BNA spends on the ground before reaching the gate.
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 BNA. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 26,166 departures from DCA scheduled in the clock hour YX4686 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at BNA (319,633 flights), not just YX4686’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · February 2024 – July 2026
The hour it leaves DCA
Part of any flight’s record belongs to the clock rather than to the flight. YX4686 has one departure time, so this is what that time is worth.
On-time arrival rate. 26,166 departures from DCA are scheduled in the 11 AM–12 PM hour over the period, against 435,076 across the whole day.
YX4686 is scheduled out of DCA at 11:34 AM, in the 11 AM–12 PM bank. Departures from DCA in that hour arrive on time 82.2% of the time against 76.5% across the airport’s whole day — the slot alone is worth 5.7 points better before anything about this particular flight is considered.
The two airport figures cover every departure from DCA 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 · February 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes YX4686 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→DCA Nashville to Washington | February 18, 2024 – July 28, 2026 | 7 | — |
| DCA→HHH Washington to Hilton Head Island | July 11–25, 2026 | 3 | — |
| HHH→DCA Hilton Head Island to Washington | July 11–25, 2026 | 3 | — |
| CLT→ATL Charlotte to Atlanta | December 23, 2023 | 1 | — |
| MSY→PHL New Orleans to Philadelphia | November 4, 2023 | 1 | — |
| DCA→MSY Washington to New Orleans | September 9–30, 2023 | 4 | — |
| MSY→DCA New Orleans to Washington | September 9–30, 2023 | 4 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4686 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.
24 min late
against a median of 11 min early
Percentiles over 648 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering February 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 |
|---|---|---|---|---|
| YX4686 this flight | Republic Airways | 85.2% | 11 min early | 648 |
| YX5707 | Republic Airways | 75.8% | 9 min early | 610 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. YX4686 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 648 records of YX4686 operating DCA → BNA, 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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