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Flight Reliability

DL 4994 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4994 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

84%
Arrive within 15 minutes
0 min
Average arrival delay
4.0%
Cancelled
12 min early
Median arrival delay

Based on 645 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(95 flights)
  • Tue85%(100 flights)
  • Wed91%(100 flights)
  • Thu84%(101 flights)
  • Fri85%(103 flights)
  • Sat70%(30 flights)
  • Sun78%(90 flights)
On-time by departure window
  • 6–9 AM86%(298 flights)
  • 9 AM–12 PM83%(312 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM—(6 flights)
On-time trend by month
90%
May

Jun 77% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%53
July 202589%53
August 202596%51
September 202592%52
October 202581%52
November 202578%50
December 202570%54
January 202686%50
February 202686%43
March 202679%48
April 202684%56
May 202690%57
Departures on time
87%
Diverted
0%
Flights flown
619
Months covered
12

Keep nerding

Based on 645 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.