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Flight Reliability

DL 4998 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4998 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

86%
Arrive within 15 minutes
2 min
Average arrival delay
1.8%
Cancelled
8 min early
Median arrival delay

Based on 617 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(90 flights)
  • Tue85%(86 flights)
  • Wed81%(90 flights)
  • Thu91%(90 flights)
  • Fri82%(90 flights)
  • Sat82%(72 flights)
  • Sun89%(88 flights)
On-time by departure window
  • 6–9 AM82%(163 flights)
  • 9 AM–12 PM87%(428 flights)
  • 12–3 PM73%(15 flights)
On-time trend by month
87%
May

Jun 88% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%59
July 202582%62
August 202581%41
September 202596%44
October 202597%60
November 202589%55
December 202566%58
January 202683%35
February 202682%45
March 202687%54
April 202689%56
May 202687%37
Departures on time
86%
Diverted
0%
Flights flown
606
Months covered
12

Keep nerding

Based on 617 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.