Flight number record
YX 4359
Republic Airways · New York to Norfolk
- Route
- JFK → ORF
- Departs
- 15:10
- Flights
- 319
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s YX 4359, 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 4359 lands a B−, 4 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 319 flights, with a median arrival 10 minutes early.
Key figures
On time
81.2%
Arrivals under 15 minutes late, of 298 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
6.58%
National rate is 1.81%
1 hour+ late
7.0%
National rate is 8.1%
These figures cover 319 flights between July 2025 and June 2026. The median arrival is 10 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 4359 flies
YX 4359 flies JFK to ORF without a single fixed slot. Its most common scheduled departure was 15:10, used on 76 of 319 flights, with 14:59 (57 flights) and 14:55 (56 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 15:1076 flights23.8%
- Departs 14:5957 flights17.9%
- Departs 14:5556 flights17.6%
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 15:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and YX 4359 runs 9 points better at 81.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
YX 4359 next to JFK to ORF
Every carrier on JFK to ORF combined arrived on time 85.1% of the time across 731 flights, so YX 4359 is 4 points behind it. Across its whole network Republic Airways managed 78.5%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4359thin sample | 319 | 81.2% | 57 min | 6.58% | B− |
| All Republic Airways on JFK–ORF | 731 | 85.1% | 65 min | 4.38% | A− |
| All carriers on JFK–ORF | 731 | 85.1% | 65 min | 4.38% | A− |
| Republic Airways, whole network | 361,482 | 78.5% | 72 min | 4.08% | B− |
Across the year
YX 4359 quarter by quarter
Quarter by quarter YX 4359 held fairly steady: 77.9% in Jul–Sep 2025, 79.8% in Oct–Dec 2025, 85.7% in Jan–Mar 2026 and 81.8% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights77.9%
- Oct–Dec 202590 flights79.8%
- Jan–Mar 202690 flights85.7%
- Apr–Jun 202647 flights81.8%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4359 did best on Tuesday at 88.4% on time and worst on Thursday at 71.4%. Each day rests on about 46 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Delay causes
Why YX 4359 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 3,215 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.
- 55%Late-arriving aircraft
- 26%National Airspace System
- 17%Carrier
- 1%Extreme weather
55% 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 3,215 reported delay minutes here, that single category outweighs weather by 55 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 3,215 delay minutes reported on YX 4359.
Cancellations run at 6.58%, against 1.81% nationally. That is about one flight in fifteen 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
7.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
YX 4359 is not only a JFK to ORF flight. It also flew ORF to JFK (301 flights, 76.2% 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. 319 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 |
|---|---|---|---|---|---|
| ORF to JFKthin sample | 301 | 76.2% | 86 min | 9.30% | B− |
What to do with this
Booking YX 4359
For a booking, the cancellation rate is the figure to plan around on YX 4359: 6.58% of its 319 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- JFK to ORF, every carrier and departure
- ORF to JFK, the return direction
- John F. Kennedy International (JFK) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.