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Flight Reliability

DL 1275 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1275 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

77%
Arrive within 15 minutes
9 min
Average arrival delay
1.7%
Cancelled
9 min early
Median arrival delay

Based on 534 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(84 flights)
  • Tue77%(82 flights)
  • Wed76%(78 flights)
  • Thu74%(78 flights)
  • Fri82%(81 flights)
  • Sat76%(37 flights)
  • Sun76%(84 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 3–6 PM81%(16 flights)
  • 6–9 PM78%(414 flights)
  • 9 PM–12 AM74%(90 flights)
On-time trend by month
75%
May

Jun 62% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%53
July 202567%52
August 202569%49
September 202582%34
October 202596%46
November 202581%36
December 202570%50
January 202658%26
February 202691%21
March 202695%41
April 202688%56
May 202675%60
Departures on time
76%
Diverted
0.2%
Flights flown
524
Months covered
12

Keep nerding

Based on 534 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.