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Flight Reliability

DL 1263 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1263 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

78%
Arrive within 15 minutes
8 min
Average arrival delay
1.0%
Cancelled
5 min early
Median arrival delay

Based on 490 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(66 flights)
  • Tue74%(68 flights)
  • Wed84%(67 flights)
  • Thu86%(70 flights)
  • Fri68%(69 flights)
  • Sat79%(72 flights)
  • Sun71%(73 flights)
On-time by departure window
  • 9 AM–12 PM75%(40 flights)
  • 12–3 PM85%(140 flights)
  • 3–6 PM71%(140 flights)
  • 6–9 PM77%(165 flights)
On-time trend by month
70%
May

Jun 79% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%53
July 202577%62
August 202564%52
September 202573%44
October 202590%62
November 202581%36
December 202566%29
January 202683%30
February 202696%27
March 202670%30
April 202680%30
May 202670%30
Departures on time
79%
Diverted
0%
Flights flown
485
Months covered
12

Keep nerding

Based on 490 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.