Flight profile · Republic Airways
YX3487
Washington (IAD) to Charleston (CHS) · scheduled 12:40 PM – 2:27 PM
How YX3487 performs
810 operations, October 2023 – July 2026.
YX3487 arrived on time 89.5% of the time, against 88.2% for all IAD → CHS flights, so this departure is 1.3 percentage points better than the route as a whole. Against Republic Airways’ own flights on this route it is 1.8 points better.
Source: US DOT Bureau of Transportation Statistics · 810 operations, October 2023 – July 2026 · If YX3487 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX3487 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| YX3487 | 89.5% | 0.99% | -11 min | 3.0% | 810 |
| Republic Airways on IAD → CHS | 87.7% | 1.48% | -10 min | 3.4% | 1,216 |
| All IAD → CHS flights | 88.2% | 1.18% | -9 min | 3.4% | 2,294 |
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
Why YX3487 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
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 YX3487 on IAD → CHS. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX3487 comes in late, and what that does to the departure.
The aircraft flying YX3487 came in 15 or more minutes late on 7% 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 IAD just before it, using the tail number in the DOT file, 570 of 802 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 |
|---|---|
| YX3487 | 7% |
| Network, same turn | 17% |
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 60 to 89 minutes. How often YX3487’s aircraft landed 15 or more minutes late is lower than 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 October 2023 – July 2026
From pushback to gate
When it leaves IAD late, does that still matter by the time it reaches CHS?
YX3487 pushes back an average of 0.6 minutes late and reaches the gate at CHS an average of 4.3 minutes early. The 4.9 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. Its 20.4 minutes on the taxiways at IAD is about what any departure from the airport in that hour spends.
On arrival at CHS, YX3487 spends 9.9 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 2.3 minutes longer than a typical CHS arrival (7.7 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 CHS. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 23,947 departures from IAD scheduled in the clock hour YX3487 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at CHS (77,396 flights), not just YX3487’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
The hour it leaves IAD
Part of any flight’s record belongs to the clock rather than to the flight. YX3487 has one departure time, so this is what that time is worth.
On-time arrival rate. 23,947 departures from IAD are scheduled in the 12 PM–1 PM hour over the period, against 170,208 across the whole day.
YX3487 is scheduled out of IAD at 12:40 PM, in the 12 PM–1 PM bank. Departures from IAD in that hour arrive on time 84.9% of the time against 81.0% across the airport’s whole day — the slot alone is worth 3.9 points better before anything about this particular flight is considered.
The two airport figures cover every departure from IAD 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 · October 2023 – July 2026 · Hours below 120 departures are not scored.
Other routes YX3487 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 |
|---|---|---|---|
| GSP→EWR Greenville/Greer/Spartanburg to Newark | April 30, 2026 – May 20, 2026 | 21 | — |
| DCA→ORD Washington to Chicago | January 6, 2026 – April 29, 2026 | 102 | 77.2% |
| EWR→ATL Newark to Atlanta | April 4–25, 2026 | 4 | — |
| MCI→ORD Kansas City to Chicago | March 14–28, 2026 | 2 | — |
| ORD→OMA Chicago to Omaha | March 21, 2026 | 1 | — |
| CHS→EWR Charleston to Newark | July 2, 2023 – February 28, 2026 | 4 | — |
| ORD→MSP Chicago to Minneapolis | February 6, 2026 | 1 | — |
| CVG→IAD Cincinnati / Covington to Washington | October 26, 2025 – December 17, 2025 | 43 | — |
| CLE→IAD Cleveland to Washington | December 2–14, 2025 | 3 | — |
| DFW→IAD Dallas–Fort Worth to Washington | December 6–13, 2025 | 2 | — |
| BOS→EWR Boston to Newark | November 1–29, 2025 | 5 | — |
| CMH→IAD Columbus to Washington | August 4–18, 2025 | 11 | — |
| SBN→IAD South Bend to Washington | July 2–31, 2025 | 26 | — |
| ORF→IAD Norfolk to Washington | November 3, 2024 – December 1, 2024 | 5 | — |
| BTV→IAD Burlington to Washington | October 27, 2024 | 1 | — |
| EWR→GSO Newark to Greensboro | November 24, 2023 | 1 | — |
| EWR→RDU Newark to Raleigh–Durham | October 7–28, 2023 | 5 | — |
| GSO→EWR Greensboro to Newark | September 5–30, 2023 | 25 | — |
| PIT→IAD Pittsburgh to Washington | August 1, 2023 – September 4, 2023 | 30 | — |
| EWR→CHS Newark to Charleston | August 5, 2023 – September 2, 2023 | 5 | — |
| EWR→MDT Newark to Harrisburg | July 1–31, 2023 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route YX3487 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.
15 min late
against a median of 11 min early
Percentiles over 810 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 810 records of YX3487 operating IAD → CHS, 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