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Flight Reliability

DL 4946 · Delta Air Lines

New York → Cleveland (JFK–CLE)97% of its flights flew this route. The rest (CLT–LGA, LGA–JAX) are included in these numbers.

37
Bring Snacks
WanderNerd Reliability Score
70%
Arrive within 15 minutes
14 min
Average arrival delay
9.6%
Cancelled
6 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

What the data says

9 PM–12 AM has a slight edge.

Departures between 9 PM–12 AM arrived on time 71% of the time, against 65% between 6–9 PM.

Mondays have been rough.

DL 4946 arrived on time 85% of the time on Fridays and just 56% on Mondays. That gap is worth planning around.

Lagging the JFK–CLE route.

DL 4946 arrived on time 70% of the time, versus 78% across the JFK–CLE route.

Lagging the Delta Air Lines network.

DL 4946 arrived on time 70% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon56%(45 flights)
  • Tue75%(47 flights)
  • Wed74%(43 flights)
  • Thu63%(43 flights)
  • Fri85%(47 flights)
  • Sat71%(45 flights)
  • Sun62%(42 flights)
On-time by departure window
  • 9 AM–12 PM—(7 flights)
  • 6–9 PM65%(81 flights)
  • 9 PM–12 AM71%(224 flights)
On-time trend by month
79%
May

Jun 58% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202558%19
July 202575%20
August 202580%30
September 202579%29
October 202566%29
November 202564%28
December 202544%18
January 202673%26
February 202676%25
March 202653%30
April 202676%29
May 202679%29
Departures on time
73%
Diverted
0%
Flights flown
312
Months covered
12

Same route, other flights

Keep nerding

Based on 345 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.