Flight number record
YX 4641
Republic Airways · Boston to Columbus
- Route
- BOS → CMH
- Departs
- 18:04
- Flights
- 329
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4641, check with Republic Airways. Republic Airways flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
YX 4641 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 329 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.3%, so YX 4641 runs 10 points behind the country as a whole. Across a thousand flights that is about 96 extra late arrivals.
Key figures
On time
67.7%
Arrivals under 15 minutes late, of 316 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
3.65%
National rate is 1.89%
1 hour+ late
16.1%
National rate is 8.3%
These figures cover 329 flights between September 2025 and August 2026. Beyond the headline rate, 16.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 4641 flies
YX 4641 flies BOS to CMH without a single fixed slot. Its most common scheduled departure was 18:04, used on 39 of 329 flights, with 18:09 (38 flights) next.
- Departs 18:0439 flights11.9%
- Departs 18:0938 flights11.6%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 18:04 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and YX 4641 runs level with that at 67.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
YX 4641 next to BOS to CMH
Every carrier on BOS to CMH combined arrived on time 80.3% of the time across 2,003 flights, so YX 4641 is 13 points behind it. Republic flew 1,886 flights on the same city pair under all its flight numbers, including this one, and those ran 79.6% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4641thin sample | 329 | 67.7% | 81 min | 3.65% | C− |
| All Republic Airways on BOS–CMH | 1,886 | 79.6% | 74 min | 2.86% | B |
| All carriers on BOS–CMH | 2,003 | 80.3% | 73 min | 2.70% | B |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4641 quarter by quarter
YX 4641 did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.9% on time and its weakest Oct–Dec 2025 at 60.0%, a swing of 18 points on roughly 82 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights—
- Oct–Dec 202571 flights60.0%
- Jan–Mar 202682 flights77.9%
- Apr–Jun 202684 flights69.9%
- Jul–Sep 202662 flights68.4%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4641 did best on Saturday at 78.8% on time and worst on Sunday at 54.3%. Each day rests on about 47 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4641 runs when it is late
YX 4641 often beats the schedule: 116 of 316 completed flights, 37%, arrived 15 minutes or more early. The 102 late arrivals split 25 under half an hour, 26 between 30 and 60 minutes, and 51 an hour or more.
- 15+ min early116 flights36.7%
- Within 15 min98 flights31.0%
- 15–29 min late25 flights7.9%
- 30–59 min late26 flights8.2%
- 1–2 hours late32 flights10.1%
- 2+ hours late19 flights6.0%
Scale runs 0% to 100%.
Share of 316 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 101 departures that left 15 minutes late or more, only 10 made it up before arrival. 11 flights left on time and still arrived late.
The worst days
Worst days for YX 4641
The latest arrival of the period was on 27 December 2025, 12 hours 55 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 December 2025 | 12 hours 55 minutes | Late-arriving aircraft |
| 14 December 2025 | 5 hours 19 minutes | Late-arriving aircraft |
| 21 June 2026 | 3 hours 43 minutes | Late-arriving aircraft |
| 11 March 2026 | 3 hours 33 minutes | Late-arriving aircraft |
| 6 May 2026 | 3 hours 22 minutes | Late-arriving aircraft |
Delay causes
Why YX 4641 runs late
Late-arriving aircraft accounts for 71% of the 8,254 delay minutes carriers reported here, and the remaining four split what is left.
- 71%Late-arriving aircraft
- 18%Carrier
- 9%National Airspace System
- 2%Extreme weather
71% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,254 reported delay minutes here, that single category outweighs weather by 36 to one. The split is drawn from 8,254 delay minutes reported on YX 4641.
Cancellations run at 3.65%, against 1.89% nationally. That is roughly one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
16.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 640 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on two other city pairs in the data, including CMH to BOS (32) and PHL to STL (13), but none flew often enough under YX 4641 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to CMH only.
One caution: this is a thin sample. 329 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking YX 4641
For a booking, the cancellation rate is the figure to plan around on YX 4641: 3.65% of its 329 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to CMH, every carrier and departure
- CMH to BOS, the return direction
- Republic Airways 5653 on the same route79.9%
- Boston Logan International (BOS) delay statistics
- John Glenn Columbus International (CMH) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Republic Airways’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.