Flight profile · Republic Airways
YX4641
Boston (BOS) to Columbus (CMH) · scheduled 7:05 PM – 8:30 PM
How YX4641 performs
656 operations, September 2024 – July 2026.
YX4641 arrived on time 70.5% of the time, against 83.3% for all BOS → CMH flights, so this departure is 12.8 percentage points worse than the route as a whole. Against Republic Airways’ own flights on this route it is 13.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 656 operations, September 2024 – July 2026 · If YX4641 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How YX4641 compares to other flight numbers, not just to itself.
This flight runs unusually far behind the carrier's own average on this route, worse than 94% of 11,589 comparable flight numbers.
70.5% on time for this specific departure, against 84.2% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where YX4641 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 |
|---|---|---|---|---|---|
| YX4641 | 70.5% | 2.74% | -6 min | 13.5% | 656 |
| Republic Airways on BOS → CMH | 84.2% | 1.89% | -12 min | 6.8% | 4,871 |
| All BOS → CMH flights | 83.3% | 1.82% | -11 min | 7.1% | 5,772 |
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026
Why YX4641 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
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for YX4641 on BOS → CMH. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX4641 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, YX4641 pushed back an average of 55 minutes late; when it came in on time or early, an average of 1 minute early.
Each departure is matched to the flight the same aircraft flew into BOS just before it, using the tail number in the DOT file, 618 of 639 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 |
|---|---|---|---|
| YX4641 | 30% | 79% | 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 YX4641’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often YX4641 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 September 2024 – July 2026
From pushback to gate
When it leaves BOS late, does that still matter by the time it reaches CMH?
YX4641 pushes back an average of 18.5 minutes late and reaches the gate at CMH an average of 11.9 minutes late. The 6.6 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 22.1 minutes on the taxiways at BOS is about what any departure from the airport in that hour spends.
On arrival at CMH, YX4641 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 2.7 minutes longer than a typical CMH arrival (7.3 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 CMH. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 24,278 departures from BOS scheduled in the clock hour YX4641 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at CMH (134,023 flights), not just YX4641’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – July 2026
The hour it leaves BOS
Part of any flight’s record belongs to the clock rather than to the flight. YX4641 has one departure time, so this is what that time is worth.
On-time arrival rate. 24,278 departures from BOS are scheduled in the 7 PM–8 PM hour over the period, against 440,893 across the whole day.
YX4641 is scheduled out of BOS at 7:05 PM, in the 7 PM–8 PM bank. Departures from BOS in that hour arrive on time 65.1% of the time against 77.2% across the airport’s whole day — the slot alone is worth 12.1 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from BOS 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 · September 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes YX4641 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 |
|---|---|---|---|
| CMH→BOS Columbus to Boston | January 6, 2026 – February 11, 2026 | 32 | — |
| PHL→STL Philadelphia to St. Louis | November 3–19, 2025 | 13 | — |
| JFK→DCA New York to Washington | November 5, 2023 – April 3, 2024 | 151 | 94.0% |
Because the same number has served different journeys, the statistics above describe only the route YX4641 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.
72 min late
against a median of 6 min early
YX4641 has an average that understates its risk: a typical arrival is 6 min early, but the worst tenth are 78 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 656 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 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 |
|---|---|---|---|---|
| YX5653 | Republic Airways | 84.4% | 11 min early | 718 |
| YX4641 this flight | Republic Airways | 70.5% | 6 min early | 656 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. YX4641 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 656 records of YX4641 operating BOS → CMH, 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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