65% of flights from New York to Rochester arrived on time over the past 12 months. That is worse than the typical U.S. route. The 10 a.m. departures ran on time 74% of the time; the 9 p.m. ones 58%. 20% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for LGA → ROC: when a flight was late, it was under 45 minutes late 43% of the time. About 1 in 8 flights landed an hour or more late, and 1 in 46 three hours or more; 7.2% were cancelled outright.
- On time or early65%
- 15–30 min late6.7%
- 30–60 min late8.2%
- 1–2 hours late8.3%
- 2–3 hours late2.2%
- 3+ hours late2.2%
- Diverted0.1%
- Cancelled7.2%
Share of all 974 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Delta Air Lines | 974 | 65% | 7.2% | −4 min | 12.6% | +85 min | Endeavor Air 90%, SkyWest 10% |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at LGA). Delays build through the day as late planes knock on, so early flights usually do best.
Last flight of the day
On LGA → ROC, each airline's last flight of the day was cancelled 12.5% of the time, against 4.9% for its earlier flights (2.5× as often). It arrived 3+ hours late 2.3% of the time (earlier flights: 2.3%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.
| Airline | Last departure | Last: cancelled | Last: 3h+ late | Earlier: cancelled | Next morning |
|---|---|---|---|---|---|
| Delta Air Lines | 9:48 p.m. | 12.5% | 2.3% | 4.9% | first flight 10:20 a.m. |
Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.
If you need to be in ROC tonight, book an earlier flight so there's a backup if it's cancelled.
By month
Each calendar month pooled over 2023–2026. Best: October (85%). Worst: July (59%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 157 | 57% | 10.2% |
| Tuesday | 154 | 69% | 8.4% |
| Wednesday | 152 | 67% | 6.6% |
| Thursday | 150 | 59% | 7.3% |
| Friday | 152 | 71% | 2.6% |
| Saturday | 57 | — | — |
| Sunday | 152 | 61% | 9.9% |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: air traffic/airport 40 · airline 18 · weather 12
Month by month
Not enough months with data to draw a trend.
Flight numbers on this route
Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.
| Flight | Departs | Flights | On time | Cancelled | Typical arrival | Operated by |
|---|---|---|---|---|---|---|
| DL 5340 | 10:25 a.m. | 216 | 75% | 6.9% | −10 min | Endeavor Air |
| DL 5343 | 3:30 p.m. | 239 | 63% | 5.9% | −2 min | Endeavor Air |
| DL 5417 | 9:29 p.m. | 299 | 58% | 12.4% | −2 min | Endeavor Air |
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Nov 11, 2025 | 3 | 0% | 0 |
| Mar 16, 2026 | 3 | 0% | 2 |
| Nov 10, 2025 | 3 | 0% | 0 |
| Mar 12, 2026 | 3 | 0% | 1 |
| Jan 26, 2026 | 3 | 0% | 2 |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of New York or Rochester. EWR → ROC has been 12 points more reliable.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| LGA → ROC (this route) | 974 | 65% | 7.2% |
| EWR → ROC Newark to Frederick Douglass Greater Rochester | 1,023 | 78% | 6.2% |
| EWR → BUF Newark to Buffalo Niagara | 1,065 | 72% | 5.6% |
| JFK → BUF New York JFK to Buffalo Niagara | 2,637 | 71% | 6.9% |
| LGA → BUF LaGuardia to Buffalo Niagara | 2,317 | 70% | 6.7% |
| JFK → ROC New York JFK to Frederick Douglass Greater Rochester | 1,677 | 69% | 5.9% |
Questions
How often are flights from LGA to ROC on time?
65% of 974 scheduled flights from New York, NY to Rochester, NY arrived within 15 minutes of schedule between September 2025 and August 2026. 7.2% were cancelled.
What is the best time of day to fly LGA to ROC?
Flights scheduled to leave at 10 a.m. were the most reliable (74% on time). The 9 p.m. departures were the least (58%).
What month has the most delays from LGA to ROC?
July (59% on time). The best month is October (85%), over 2023–2026.
Is the last flight of the day from LGA to ROC more likely to be cancelled?
Yes. Each airline's last LGA–ROC flight of the day was cancelled 12.5% of the time over the past year, against 4.9% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.
Related
- ROC → LGA (return)
- LaGuardia (LGA) delays by hour
- Flights into Frederick Douglass Greater Rochester (ROC)
- Delta Air Lines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.