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Flight Reliability

DL 1089 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1089 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

89%
Arrive within 15 minutes
1 min early
Average arrival delay
2.4%
Cancelled
10 min early
Median arrival delay

Based on 695 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(96 flights)
  • Tue91%(96 flights)
  • Wed90%(94 flights)
  • Thu87%(101 flights)
  • Fri92%(100 flights)
  • Sat90%(91 flights)
  • Sun90%(99 flights)
On-time by departure window
  • 6–9 AM90%(350 flights)
  • 9 AM–12 PM88%(327 flights)
On-time trend by month
94%
May

Jun 91% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%58
July 202586%62
August 202592%50
September 202597%37
October 202590%60
November 202595%60
December 202583%52
January 202682%60
February 202687%54
March 202686%62
April 202692%60
May 202694%62
Departures on time
89%
Diverted
0.1%
Flights flown
677
Months covered
12

Keep nerding

Based on 695 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.