Flight profile · Republic Airways
YX3401
Charleston (CHS) to Washington (IAD) · scheduled 2:44 PM – 4:23 PM
How YX3401 performs
772 operations, October 2023 – July 2026.
YX3401 arrived on time 85.4% of the time, against 88.3% for all CHS → IAD flights, so this departure is 2.9 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 772 operations, October 2023 – July 2026 · If YX3401 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX3401 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 |
|---|---|---|---|---|---|
| YX3401 | 85.4% | 1.04% | -10 min | 6.0% | 772 |
| Republic Airways on CHS → IAD | 86.3% | 1.66% | -10 min | 5.6% | 1,144 |
| All CHS → IAD flights | 88.3% | 1.18% | -10 min | 5.1% | 2,290 |
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
Why YX3401 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
weather severe enough to stop this flight specifically
crew, maintenance, boarding and fueling, all within the carrier’s control
Share of the delay minutes US DOT attributed to each cause for YX3401 on CHS → IAD. 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 YX3401 comes in late, and what that does to the departure.
The aircraft flying YX3401 came in 15 or more minutes late on 9% 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 CHS just before it, using the tail number in the DOT file, 748 of 766 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 |
|---|---|
| YX3401 | 9% |
| Network, same turn | 18% |
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 YX3401’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 CHS late, does that still matter by the time it reaches IAD?
YX3401 pushes back an average of 6.3 minutes late and reaches the gate at IAD an average of 2.3 minutes late. The 4.0 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 18.3 minutes on the taxiways at CHS is about what any departure from the airport in that hour spends.
On arrival at IAD, YX3401 spends 10.1 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 2.6 minutes longer than a typical IAD arrival (7.5 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 IAD. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 6,056 departures from CHS scheduled in the clock hour YX3401 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at IAD (169,930 flights), not just YX3401’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
The hour it leaves CHS
Part of any flight’s record belongs to the clock rather than to the flight. YX3401 has one departure time, so this is what that time is worth.
On-time arrival rate. 6,056 departures from CHS are scheduled in the 2 PM–3 PM hour over the period, against 77,398 across the whole day.
YX3401 is scheduled out of CHS at 2:44 PM, in the 2 PM–3 PM bank. Departures from CHS in that hour arrive on time 77.6% of the time against 80.6% across the airport’s whole day, so the hour YX3401 leaves in is an ordinary one for CHS and explains nothing about its record either way.
The two airport figures cover every departure from CHS 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 YX3401 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 |
|---|---|---|---|
| DTW→ORD Detroit to Chicago | April 30, 2026 – May 20, 2026 | 21 | — |
| ORD→SYR Chicago to Syracuse | March 29, 2026 – April 29, 2026 | 23 | — |
| GSP→ORD Greenville/Greer/Spartanburg to Chicago | April 6–27, 2026 | 4 | — |
| AUS→EWR Austin to Newark | April 4, 2026 | 1 | — |
| ALB→ORD Albany to Chicago | October 27, 2025 – March 28, 2026 | 115 | 67.0% |
| ORF→ORD Norfolk to Chicago | February 22, 2026 | 1 | — |
| SAV→ORD Savannah to Chicago | February 21, 2026 | 1 | — |
| CLE→EWR Cleveland to Newark | December 2–17, 2025 | 16 | — |
| EWR→DCA Newark to Washington | November 27, 2025 | 1 | — |
| GRR→ORD Grand Rapids to Chicago | October 26, 2025 | 1 | — |
| ECP→ORD Panama City Beach to Chicago | August 19, 2025 – September 24, 2025 | 37 | — |
| IAD→BTV Washington to Burlington | November 28, 2024 | 1 | — |
| EWR→CVG Newark to Cincinnati / Covington | March 7, 2024 | 1 | — |
| BDL→IAD Hartford to Washington | December 21–26, 2023 | 4 | — |
| DCA→EWR Washington to Newark | November 23, 2023 | 1 | — |
| ORD→CID Chicago to Cedar Rapids | July 1, 2023 – October 28, 2023 | 112 | 96.3% |
| IAD→CLE Washington to Cleveland | September 22, 2023 | 1 | — |
| ROC→EWR Rochester to Newark | September 9, 2023 | 1 | — |
| EWR→BNA Newark to Nashville | August 5, 2023 – September 2, 2023 | 5 | — |
Because the same number has served different journeys, the statistics above describe only the route YX3401 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 10 min early
Percentiles over 772 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 772 records of YX3401 operating CHS → IAD, 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