Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 963 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 963 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

87%
Arrive within 15 minutes
3 min early
Average arrival delay
5.6%
Cancelled
10 min early
Median arrival delay

Based on 413 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(57 flights)
  • Tue93%(59 flights)
  • Wed85%(61 flights)
  • Thu90%(61 flights)
  • Fri84%(55 flights)
  • Sat76%(46 flights)
  • Sun94%(50 flights)
On-time by departure window
  • 6–9 AM88%(108 flights)
  • 9 AM–12 PM89%(123 flights)
  • 12–3 PM77%(13 flights)
  • 3–6 PM85%(143 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
100%
May

Jun 79% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%14
July 202581%16
August 202595%20
September 202594%17
October 202597%30
November 202582%28
December 202567%30
January 202689%37
February 202682%51
March 202687%54
April 202684%44
May 2026100%48
Departures on time
86%
Diverted
0.2%
Flights flown
389
Months covered
12

Keep nerding

Based on 413 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.