ON TIMEBOARD

DL 4987 on time

Delta Air Lines 4987: New York to Cincinnati at 9:59 a.m. (past 12 months)

On time
78%
349 flights · likely 73–82%
Cancelled
4.3%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+83 min
average delay
Similar flights
74%
DL, same route & hour

About 1 in 4 DL 4987 flights from New York arrived 15+ minutes late, diverted or cancelled over the past year (22%); 4.3% were cancelled. The typical flight landed 12 minutes early.

DL 4987: LGA → CVG

Scheduled to leave New York at 9:59 a.m. local time, operated by Endeavor Air as 9E 4987. Over the past year it arrived on time 78% of the time (349 flights), better than other DL flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 97% on time (30 flights)97SepOct 2025: 81% on time (31 flights)81OctNov 2025: 79% on time (28 flights)79NovDec 2025: 74% on time (31 flights)74DecJan 2026: 74% on time (27 flights)74JanFeb 2026: 71% on time (24 flights)71FebMar 2026: 53% on time (30 flights)53MarApr 2026: 77% on time (30 flights)77AprMay 2026: 84% on time (31 flights)84MayJun 2026: 90% on time (30 flights)90JunJul 2026: 74% on time (27 flights)74JulAug 2026: 77% on time (30 flights)77Aug

By day of week

DayFlightsOn time
Monday5377%
Tuesday5271%
Wednesday5281%
Thursday5176%
Friday5180%
Saturday4388%
Sunday4770%

Why it was late

Late inbound plane 50%Air traffic & airport (NAS) 28%Airline (crew, maintenance, ops) 21%

All flights LGA → CVG · Connecting off DL 4987? Check the risk

Questions

How often is DL 4987 from LGA to CVG late?

Delta Air Lines 4987 from New York, NY to Cincinnati, OH arrived 15 or more minutes late, was diverted or was cancelled on 22% of 349 scheduled flights between September 2025 and August 2026. 4.3% 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.