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Flight Reliability

DL 1545 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1545 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

80%
Arrive within 15 minutes
6 min
Average arrival delay
2.5%
Cancelled
4 min early
Median arrival delay

Based on 402 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(66 flights)
  • Tue89%(47 flights)
  • Wed81%(53 flights)
  • Thu81%(64 flights)
  • Fri73%(60 flights)
  • Sat75%(36 flights)
  • Sun86%(66 flights)
On-time by departure window
  • 9 AM–12 PM81%(52 flights)
  • 12–3 PM95%(20 flights)
  • 3–6 PM83%(225 flights)
  • 6–9 PM69%(64 flights)
  • 9 PM–12 AM74%(31 flights)
On-time trend by month
83%
May

Jun 43% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%21
July 202578%18
August 202581%16
September 202585%13
October 202571%28
November 202578%23
December 202566%38
January 202692%49
February 202688%50
March 202690%52
April 202682%49
May 202683%35
Departures on time
78%
Diverted
0%
Flights flown
392
Months covered
12

Keep nerding

Based on 402 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.