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Flight Reliability

DL 1254 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1254 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

83%
Arrive within 15 minutes
4 min
Average arrival delay
1.6%
Cancelled
12 min early
Median arrival delay

Based on 691 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(104 flights)
  • Tue91%(87 flights)
  • Wed84%(89 flights)
  • Thu85%(98 flights)
  • Fri82%(99 flights)
  • Sat81%(100 flights)
  • Sun79%(102 flights)
On-time by departure window
  • 9 AM–12 PM89%(147 flights)
  • 12–3 PM93%(152 flights)
  • 3–6 PM74%(195 flights)
  • 6–9 PM78%(185 flights)
On-time trend by month
98%
May

Jun 64% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%45
July 202562%50
August 202576%59
September 202582%60
October 202580%59
November 202574%54
December 202594%52
January 202687%60
February 202684%56
March 202687%62
April 202698%60
May 202698%62
Departures on time
81%
Diverted
0.1%
Flights flown
679
Months covered
12

Keep nerding

Based on 691 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.