Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 4919 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4919 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
6 min
Average arrival delay
3.1%
Cancelled
9 min early
Median arrival delay

Based on 643 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(85 flights)
  • Tue73%(90 flights)
  • Wed85%(88 flights)
  • Thu76%(87 flights)
  • Fri81%(94 flights)
  • Sat81%(87 flights)
  • Sun70%(90 flights)
On-time by departure window
  • 6–9 AM79%(205 flights)
  • 9 AM–12 PM81%(327 flights)
  • 12–3 PM64%(78 flights)
  • 3–6 PM55%(11 flights)
On-time trend by month
85%
May

Jun 66% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%59
July 202581%58
August 202593%59
September 202586%56
October 202582%55
November 202580%55
December 202557%54
January 202686%29
February 202670%40
March 202666%61
April 202683%42
May 202685%53
Departures on time
81%
Diverted
0.3%
Flights flown
621
Months covered
12

Keep nerding

Based on 643 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.