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Flight Reliability

DL 336 · Delta Air Lines

Denver → New York (DEN–JFK)

91
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
5 min early
Average arrival delay
1.6%
Cancelled
14 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Skip Monday if you can.

DL 336 arrived on time 94% of the time on Tuesdays. On Mondays: 80%.

Better than the DEN–JFK route average.

DL 336 arrived on time 90% of the time, versus 80% across the DEN–JFK route.

Better than the Delta Air Lines network average.

DL 336 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon80%(50 flights)
  • Tue94%(52 flights)
  • Wed94%(52 flights)
  • Thu92%(52 flights)
  • Fri83%(52 flights)
  • Sat90%(51 flights)
  • Sun94%(50 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202576%29
August 202577%31
September 202593%30
October 202597%31
November 202583%30
December 202594%31
January 202693%29
February 202696%27
March 202681%31
April 202697%30
May 202697%31
Departures on time
90%
Diverted
0%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.