Flight number record
YX 4359
Republic Airways · New York to Norfolk
- Route
- JFK → ORF
- Departs
- 15:30
- Flights
- 319
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 319 flights, with a median arrival 10 minutes early.
Set against the rest of the country, YX 4359's record is 4 points better than the US average of 77.3%. That gap is worth roughly 41 fewer late arrivals for every thousand flights.
Key figures
On time
81.4%
Arrivals under 15 minutes late, of 295 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
7.52%
National rate is 1.89%
1 hour+ late
6.8%
National rate is 8.3%
These figures cover 319 flights between September 2025 and August 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.
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Schedule
When YX 4359 flies
YX 4359 flies JFK to ORF without a single fixed slot. Its most common scheduled departure was 15:30, used on 67 of 319 flights, with 14:59 (57 flights) and 15:10 (49 flights) next.
- Departs 15:3067 flights21.0%
- Departs 14:5957 flights17.9%
- Departs 15:1049 flights15.4%
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 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 4359 runs 10 points better at 81.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
YX 4359 next to JFK to ORF
Every carrier on JFK to ORF combined arrived on time 82.4% of the time across 731 flights, so YX 4359 is about level with it. Across its whole network Republic Airways managed 78.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4359thin sample | 319 | 81.4% | 67 min | 7.52% | B− |
| All Republic Airways on JFK–ORF | 731 | 82.4% | 72 min | 6.02% | B− |
| All carriers on JFK–ORF | 731 | 82.4% | 72 min | 6.02% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4359 quarter by quarter
YX 4359 did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.7% on time and its weakest Jul–Sep 2026 at 74.1%, a swing of 12 points on roughly 80 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 202590 flights79.8%
- Jan–Mar 202690 flights85.7%
- Apr–Jun 202647 flights81.8%
- Jul–Sep 202662 flights74.1%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4359 did best on Tuesday at 90.5% on time and worst on Sunday at 76.2%. Each day rests on about 46 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4359 runs when it is late
YX 4359 often beats the schedule: 102 of 295 completed flights, 35%, arrived 15 minutes or more early. The 55 late arrivals split 18 under half an hour, 17 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early102 flights34.6%
- Within 15 min138 flights46.8%
- 15–29 min late18 flights6.1%
- 30–59 min late17 flights5.8%
- 1–2 hours late14 flights4.7%
- 2+ hours late6 flights2.0%
Scale runs 0% to 100%.
Share of 295 completed flights by arrival against schedule.
7 of 46 late departures made up the time and arrived on time, 15% of them. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ORF.
The worst days
Worst days for YX 4359
The latest arrival of the period was on 11 July 2026, 8 hours 9 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 July 2026 | 8 hours 9 minutes | Late-arriving aircraft |
| 12 March 2026 | 3 hours 19 minutes | Late-arriving aircraft |
| 14 June 2026 | 3 hours 4 minutes | Late-arriving aircraft |
| 22 March 2026 | 2 hours 33 minutes | Carrier |
| 7 June 2026 | 2 hours 29 minutes | Late-arriving aircraft |
Delay causes
Why YX 4359 runs late
Late-arriving aircraft accounts for 58% of the 3,683 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Late-arriving aircraft
- 31%National Airspace System
- 11%Carrier
- 1%Extreme weather
58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,683 reported delay minutes here, that single category outweighs weather by 58 to one. The split is drawn from 3,683 delay minutes reported on YX 4359.
Cancellations run at 7.52%, against 1.89% nationally. That is roughly one flight in twelve 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
6.8% of arrivals land an hour or more late, close to the national 8.3%, so 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 (274 flights, 76.0% 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 | 274 | 76.0% | 85 min | 8.76% | B− |
What to do with this
Booking YX 4359
For a booking, the cancellation rate is the figure to plan around on YX 4359: 7.52% 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.