Flight number record
YX 5601
Republic Airways · Boston to Cincinnati
- Route
- BOS → CVG
- Departs
- 08:45
- Flights
- 339
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5601, 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 5601 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 40 minutes. That rests on 339 flights, with a median arrival 13 minutes early.
Set against the rest of the country, YX 5601's record is 11 points better than the US average of 77.6%. That gap is worth roughly 111 fewer late arrivals for every thousand flights.
Key figures
On time
88.7%
Arrivals under 15 minutes late, of 327 completed flights
Avg delay
40 min
Across delayed arrivals only, not all flights
Cancelled
3.54%
National rate is 1.81%
1 hour+ late
2.1%
National rate is 8.1%
These figures cover 339 flights between July 2025 and June 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Schedule
When YX 5601 flies
YX 5601 flies BOS to CVG without a single fixed slot. Its most common scheduled departure was 08:45, used on 182 of 339 flights, with 08:22 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:45182 flights53.7%
- Departs 08:2236 flights10.6%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 08:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 5601 runs 5 points better at 88.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
YX 5601 next to BOS to CVG
Every carrier on BOS to CVG combined arrived on time 80.5% of the time across 1,943 flights, so YX 5601 is 8 points ahead of it. Republic flew 1,557 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5601thin sample | 339 | 88.7% | 40 min | 3.54% | A− |
| All Republic Airways on BOS–CVG | 1,557 | 82.3% | 54 min | 3.08% | B− |
| All carriers on BOS–CVG | 1,943 | 80.5% | 61 min | 2.88% | B |
| Republic Airways, whole network | 361,482 | 78.5% | 72 min | 4.08% | B− |
Across the year
YX 5601 quarter by quarter
YX 5601 did not run the same all year. Its best quarter was Jul–Sep 2025 at 95.8% on time and its weakest Jan–Mar 2026 at 83.1%, a swing of 13 points on roughly 85 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 202574 flights95.8%
- Oct–Dec 202585 flights85.5%
- Jan–Mar 202690 flights83.1%
- Apr–Jun 202690 flights91.0%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5601 ranged from 84.8% on Sunday to 92.0% on Wednesday. With about 48 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why YX 5601 runs late
One category carries most of the weight here. Carrier accounts for 44% of the 1,467 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 44%Carrier
- 43%National Airspace System
- 13%Late-arriving aircraft
- 1%Extreme weather
The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 641 of the 1,467 delay minutes reported here. The split is drawn from 1,467 delay minutes reported on YX 5601.
Cancellations run at 3.54%, against 1.81% nationally. That is about one flight in 30 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
Badly late arrivals are rare here: only 2.1% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 752 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
YX 5601 is not only a BOS to CVG flight. It also flew CVG to BOS (314 flights, 82.8% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 339 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| CVG to BOSthin sample | 314 | 82.8% | 53 min | 3.82% | B− |
What to do with this
Booking YX 5601
For a booking, the cancellation rate is the figure to plan around on YX 5601: 3.54% of its 339 scheduled flights did not operate. A late arrival costs about 40 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to CVG, every carrier and departure
- CVG to BOS, the return direction
- Republic Airways 5789 on the same route82.1%
- Boston Logan International (BOS) delay statistics
- Cincinnati/Northern Kentucky International (CVG) 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
- What a cancellation rate actually tells you (and what it hides)
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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.