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Flight Reliability

DL 4955 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4955 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

77%
Arrive within 15 minutes
10 min
Average arrival delay
1.5%
Cancelled
7 min early
Median arrival delay

Based on 678 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(100 flights)
  • Tue83%(99 flights)
  • Wed85%(98 flights)
  • Thu72%(98 flights)
  • Fri74%(96 flights)
  • Sat79%(79 flights)
  • Sun74%(97 flights)
On-time by departure window
  • 9 AM–12 PM77%(301 flights)
  • 12–3 PM78%(357 flights)
  • 3–6 PM—(9 flights)
On-time trend by month
65%
May

Jun 79% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%48
July 202577%52
August 202587%55
September 202595%56
October 202572%60
November 202574%54
December 202558%50
January 202676%54
February 202684%56
March 202673%62
April 202688%60
May 202665%60
Departures on time
77%
Diverted
0.1%
Flights flown
667
Months covered
12

Keep nerding

Based on 678 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.