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Flight Reliability

DL 4987 · Delta Air Lines

New York → Cincinnati (LGA–CVG)86% of its flights flew this route. The rest (CVG–LGA, ATL–AGS) are included in these numbers.

71
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
9 min
Average arrival delay
3.5%
Cancelled
10 min early
Median arrival delay

Based on 405 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 4987 departing between 6–9 AM arrived on time 97% of the time, versus 65% between 12–3 PM.

Sunday scaries are real for this one.

DL 4987 arrived on time 95% of the time on Saturdays and just 68% on Sundays. That gap is worth planning around.

A bit ahead of the LGA–CVG route.

DL 4987 arrived on time 77% of the time, versus 73% across the LGA–CVG route.

A bit behind the Delta Air Lines network.

DL 4987 arrived on time 77% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon85%(54 flights)
  • Tue69%(58 flights)
  • Wed76%(59 flights)
  • Thu77%(60 flights)
  • Fri72%(58 flights)
  • Sat95%(42 flights)
  • Sun68%(60 flights)
On-time by departure window
  • 6–9 AM97%(31 flights)
  • 9 AM–12 PM76%(307 flights)
  • 12–3 PM65%(48 flights)
  • 3–6 PM—(5 flights)
On-time trend by month
84%
May

Jun 66% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%29
July 202574%31
August 202581%31
September 202597%30
October 202581%31
November 202579%28
December 202577%30
January 202684%25
February 202685%34
March 202655%51
April 202675%40
May 202684%31
Departures on time
80%
Diverted
0%
Flights flown
391
Months covered
12

Same route, other flights

Keep nerding

Based on 405 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.