Flight number record

YX 3647

Republic Airways · Newark to Rochester

Route: EWR → ROC
Departs: 11:30
Flights: 276
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 35 minutes. That rests on 276 flights, with a median arrival 16 minutes early.

Set against the rest of the country, YX 3647's record is 14 points better than the US average of 77.6%. That gap is worth roughly 141 fewer late arrivals for every thousand flights.

On time

91.7%

Arrivals under 15 minutes late, of 266 completed flights

Avg delay

33 min

Across delayed arrivals only, not all flights

Cancelled

3.26%

National rate is 1.81%

1 hour+ late

1.1%

National rate is 8.1%

These figures cover 276 flights between July 2025 and June 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.

Schedule

When YX 3647 flies

YX 3647 flies EWR to ROC without a single fixed slot. Its most common scheduled departure was 11:30, used on 93 of 276 flights, with 11:22 (37 flights) and 11:15 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:3093 flights33.7%
Departs 11:2237 flights13.4%
Departs 11:1536 flights13.0%

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 11:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and YX 3647 runs 13 points better at 91.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 3647 next to EWR to ROC

Every carrier on EWR to ROC combined arrived on time 87.1% of the time across 643 flights, so YX 3647 is 5 points ahead of it. Republic flew 610 flights on the same city pair under all its flight numbers, including this one, and those ran 87.7% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 13 points.

YX 3647 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3647thin sample	276	91.7%	33 min	3.26%	A−
All Republic Airways on EWR–ROC	610	87.7%	57 min	6.39%	A−
All carriers on EWR–ROC	643	87.1%	57 min	6.07%	A−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	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 Jul–Sep 2025 at 82.1%, a swing of 17 points on roughly 69 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 202556 flights82.1%
Oct–Dec 202553 flights87.8%
Jan–Mar 202681 flights93.3%
Apr–Jun 202686 flights98.8%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3647 did best on Saturday at 100.0% on time and worst on Wednesday at 85.4%. Each day rests on about 39 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

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 734 reported delay minutes.

Late-arriving aircraft
42%
Carrier
37%
National Airspace System
21%

42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 734 reported delay minutes here, that single category outweighs weather by 42 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 734 delay minutes reported on YX 3647.

Cancellations run at 3.26%, 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 1.1% 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 same number turns up on eight other city pairs in the data, including ROC to ORD (48), 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. 276 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: 3.26% of its 276 scheduled flights did not operate. A late arrival costs roughly 35 minutes, but a cancellation costs the day, so leave a later option open.

Where to go next

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.

Key figures