Flight number record
YX 3647
Republic Airways · Newark to Rochester
- Route
- EWR → ROC
- Departs
- 10:17
- Flights
- 282
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 3647, 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 3647 earns an A−. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 45 minutes. That rests on 282 flights, with a median arrival 16 minutes early.
Set against the rest of the country, YX 3647's record is 16 points better than the US average of 77.3%. That gap is worth roughly 161 fewer late arrivals for every thousand flights.
Key figures
On time
93.4%
Arrivals under 15 minutes late, of 271 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
3.55%
National rate is 1.89%
1 hour+ late
1.5%
National rate is 8.3%
These figures cover 282 flights between September 2025 and August 2026. The median arrival is 16 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When YX 3647 flies
YX 3647 flies EWR to ROC without a single fixed slot. Its most common scheduled departure was 10:17, used on 50 of 282 flights, with 11:30 (38 flights) and 11:22 (37 flights) next.
- Departs 10:1750 flights17.7%
- Departs 11:3038 flights13.5%
- Departs 11:2237 flights13.1%
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 10:17 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and YX 3647 runs 10 points better at 93.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
YX 3647 next to EWR to ROC
Every carrier on EWR to ROC combined arrived on time 87.3% of the time across 673 flights, so YX 3647 is 6 points ahead of it. Republic flew 640 flights on the same city pair under all its flight numbers, including this one, and those ran 87.9% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 3647thin sample | 282 | 93.4% | 44 min | 3.55% | A− |
| All Republic Airways on EWR–ROC | 640 | 87.9% | 60 min | 6.88% | A− |
| All carriers on EWR–ROC | 673 | 87.3% | 59 min | 6.54% | A− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 3647 quarter by quarter
YX 3647 did not run the same all year. Its best quarter was Apr–Jun 2026 at 98.8% on time and its weakest Oct–Dec 2025 at 87.8%, a swing of 11 points on roughly 71 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 20251 flights—
- Oct–Dec 202553 flights87.8%
- Jan–Mar 202681 flights93.3%
- Apr–Jun 202686 flights98.8%
- Jul–Sep 202661 flights90.0%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, YX 3647 did best on Friday at 100.0% on time and worst on Tuesday at 82.9%. Each day rests on about 40 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 3647 runs when it is late
YX 3647 often beats the schedule: 154 of 271 completed flights, 57%, arrived 15 minutes or more early. The 18 late arrivals split 6 under half an hour, 8 between 30 and 60 minutes, and 4 an hour or more. Not one arrived two hours late.
- 15+ min early154 flights56.8%
- Within 15 min99 flights36.5%
- 15–29 min late6 flights2.2%
- 30–59 min late8 flights3.0%
- 1–2 hours late4 flights1.5%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 271 completed flights by arrival against schedule.
Only 11 of 271 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for YX 3647
The latest arrival of the period was on 14 July 2026, 1 hour 56 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, March, December and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 July 2026 | 1 hour 56 minutes | Late-arriving aircraft |
| 20 July 2026 | 1 hour 28 minutes | Carrier |
| 17 March 2026 | 1 hour 16 minutes | Late-arriving aircraft |
| 17 December 2025 | 1 hour 4 minutes | Carrier |
| 27 August 2026 | 58 minutes | National Airspace System |
Delay causes
Why YX 3647 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 793 reported delay minutes.
- 36%National Airspace System
- 33%Carrier
- 31%Late-arriving aircraft
36% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 287 minutes out of 793, against a national NAS share of 21%. The split is drawn from 793 delay minutes reported on YX 3647.
Cancellations run at 3.55%, against 1.89% 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 1.5% land an hour or more behind schedule, against 8.3% 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 same number turns up on six other city pairs in the data, including ROC to ORD (69), BTV to EWR (27) and MYR to EWR (19), but none flew often enough under YX 3647 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to ROC only.
One caution: this is a thin sample. 282 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 3647
For a booking, the cancellation rate is the figure to plan around on YX 3647: 3.55% of its 282 scheduled flights did not operate. A late arrival costs about 45 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Newark Liberty International (EWR) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.