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Flight Reliability

DL 655 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 655 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

82%
Arrive within 15 minutes
5 min
Average arrival delay
0.8%
Cancelled
6 min early
Median arrival delay

Based on 512 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(73 flights)
  • Tue83%(72 flights)
  • Wed88%(72 flights)
  • Thu90%(72 flights)
  • Fri75%(72 flights)
  • Sat81%(73 flights)
  • Sun70%(74 flights)
On-time by departure window
  • 6–9 AM83%(153 flights)
  • 9 AM–12 PM81%(355 flights)
On-time trend by month
90%
May

Jun 90% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202574%31
August 202594%31
September 202593%30
October 202590%31
November 202582%27
December 202581%31
January 202662%58
February 202693%56
March 202666%61
April 202683%60
May 202690%62
Departures on time
86%
Diverted
0%
Flights flown
508
Months covered
12

Keep nerding

Based on 512 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.