About 1 in 4 DL 5340 flights from New York arrived 15+ minutes late, diverted or cancelled over the past year (25%); 6.9% were cancelled. The typical flight landed 10 minutes early.
DL 5340: LGA → ROC
Scheduled to leave New York at 10:25 a.m. local time, operated by Endeavor Air as 9E 5340. Over the past year it arrived on time 75% of the time (216 flights), in line with other DL flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 70% |
| Tuesday | 36 | 75% |
| Wednesday | 34 | 82% |
| Thursday | 34 | 76% |
| Friday | 36 | 86% |
| Saturday | 3 | — |
| Sunday | 36 | 61% |
Why it was late
All flights LGA → ROC · Connecting off DL 5340? Check the risk
DL 5340: ROC → LGA
Scheduled to leave Rochester at 12:35 p.m. local time, operated by Endeavor Air as 9E 5340. Over the past year it arrived on time 64% of the time (166 flights), worse than other DL flights on the route at that hour (68%). Last seen in the data Aug 2, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 28 | 46% |
| Tuesday | 28 | 57% |
| Wednesday | 26 | 73% |
| Thursday | 25 | 72% |
| Friday | 27 | 81% |
| Saturday | 3 | — |
| Sunday | 29 | 59% |
Why it was late
All flights ROC → LGA · Connecting off DL 5340? Check the risk
Questions
How often is DL 5340 from LGA to ROC late?
Delta Air Lines 5340 from New York, NY to Rochester, NY arrived 15 or more minutes late, was diverted or was cancelled on 25% of 216 scheduled flights between September 2025 and August 2026. 6.9% were cancelled.
How often is DL 5340 from ROC to LGA late?
Delta Air Lines 5340 from Rochester, NY to New York, NY arrived 15 or more minutes late, was diverted or was cancelled on 36% of 166 scheduled flights between September 2025 and August 2026. 8.4% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.