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Flight Reliability

DL 548 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 548 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

89%
Arrive within 15 minutes
1 min early
Average arrival delay
3.0%
Cancelled
14 min early
Median arrival delay

Based on 263 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(51 flights)
  • Tue94%(17 flights)
  • Wed71%(14 flights)
  • Thu94%(49 flights)
  • Fri92%(48 flights)
  • Sat89%(27 flights)
  • Sun82%(49 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM—(5 flights)
  • 3–6 PM—(4 flights)
  • 9 PM–12 AM89%(245 flights)
On-time trend by month
95%
May

Jun 92% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%24
July 202595%19
August 2025100%19
September 202582%17
October 202583%18
November 2025100%15
December 202581%21
January 202686%28
February 202689%27
March 202684%19
April 202685%27
May 202695%21
Departures on time
86%
Diverted
0%
Flights flown
255
Months covered
12

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.