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Flight Reliability

DL 5378 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5378 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

70%
Arrive within 15 minutes
21 min
Average arrival delay
3.4%
Cancelled
3 min early
Median arrival delay

Based on 263 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(37 flights)
  • Tue70%(37 flights)
  • Wed72%(36 flights)
  • Thu74%(38 flights)
  • Fri63%(38 flights)
  • Sat81%(32 flights)
  • Sun66%(35 flights)
On-time by departure window
  • 12–3 PM84%(25 flights)
  • 3–6 PM57%(21 flights)
  • 6–9 PM39%(23 flights)
  • 9 PM–12 AM73%(184 flights)
On-time trend by month
67%
May

Aug 71% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202571%21
September 202587%30
October 202583%30
November 202582%28
December 202578%18
January 202655%22
February 202642%26
April 202668%19
May 202667%51
Departures on time
71%
Diverted
0.4%
Flights flown
253
Months covered
11

Keep nerding

Based on 263 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.