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Flight Reliability

DL 878 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 878 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
2 min early
Average arrival delay
5.6%
Cancelled
8 min early
Median arrival delay

Based on 555 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(83 flights)
  • Tue86%(92 flights)
  • Wed77%(93 flights)
  • Thu86%(93 flights)
  • Fri83%(89 flights)
  • Sat65%(17 flights)
  • Sun84%(56 flights)
On-time by departure window
  • 6–9 AM89%(260 flights)
  • 9 AM–12 PM78%(261 flights)
  • 12–3 PM—(2 flights)
On-time trend by month
70%
May

Jun 83% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%40
July 202591%46
August 202584%45
September 202584%49
October 202575%48
November 202577%43
December 202560%40
January 202696%49
February 202687%47
March 202690%52
April 202685%54
May 202670%10
Departures on time
89%
Diverted
0.2%
Flights flown
523
Months covered
12

Keep nerding

Based on 555 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.