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Flight Reliability

DL 4245 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4245 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

87%
Arrive within 15 minutes
3 min early
Average arrival delay
2.5%
Cancelled
14 min early
Median arrival delay

Based on 726 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(102 flights)
  • Tue90%(104 flights)
  • Wed92%(100 flights)
  • Thu94%(98 flights)
  • Fri84%(102 flights)
  • Sat88%(102 flights)
  • Sun80%(100 flights)
On-time by departure window
  • 6–9 AM83%(108 flights)
  • 9 AM–12 PM88%(600 flights)
On-time trend by month
98%
May

Jun 97% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%60
July 202598%62
August 202586%62
September 202588%60
October 202590%62
November 202588%50
December 202579%62
January 202678%60
February 202661%56
March 202695%58
April 202687%54
May 202698%62
Departures on time
89%
Diverted
0%
Flights flown
708
Months covered
12

Keep nerding

Based on 726 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.