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Flight Reliability

DL 4335 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4335 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

78%
Arrive within 15 minutes
10 min
Average arrival delay
12.5%
Cancelled
12 min early
Median arrival delay

Based on 640 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(86 flights)
  • Tue84%(62 flights)
  • Wed77%(62 flights)
  • Thu79%(85 flights)
  • Fri78%(90 flights)
  • Sat80%(90 flights)
  • Sun81%(82 flights)
On-time trend by month
95%
May

Jun 85% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%60
July 202563%59
August 202584%61
September 202590%60
October 202592%62
November 202577%56
December 202563%48
January 202663%32
February 202674%31
March 202661%38
April 202692%12
May 202695%38
Departures on time
78%
Diverted
0.5%
Flights flown
557
Months covered
12

Keep nerding

Based on 640 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.