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Flight Reliability

DL 3919 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3919 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
29 min
Average arrival delay
0.9%
Cancelled
3 min early
Median arrival delay

Based on 337 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(52 flights)
  • Tue69%(45 flights)
  • Wed73%(44 flights)
  • Thu75%(52 flights)
  • Fri69%(54 flights)
  • Sat66%(35 flights)
  • Sun71%(51 flights)
On-time by departure window
  • 12–3 PM75%(77 flights)
  • 3–6 PM66%(148 flights)
  • 6–9 PM69%(88 flights)
  • 9 PM–12 AM80%(20 flights)
On-time trend by month
82%
May

Jun 87% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%31
July 202592%26
August 202583%18
September 202580%10
December 202544%16
January 202652%42
February 202655%40
March 202652%52
April 202682%38
May 202682%56
Departures on time
69%
Diverted
0.3%
Flights flown
333
Months covered
11

Keep nerding

Based on 337 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.