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Flight Reliability

DL 5227 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5227 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

80%
Arrive within 15 minutes
6 min
Average arrival delay
2.1%
Cancelled
8 min early
Median arrival delay

Based on 378 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(53 flights)
  • Tue76%(54 flights)
  • Wed75%(55 flights)
  • Thu83%(53 flights)
  • Fri87%(52 flights)
  • Sat88%(51 flights)
  • Sun77%(51 flights)
On-time by departure window
  • 6–9 AM91%(58 flights)
  • 9 AM–12 PM78%(254 flights)
  • 3–6 PM77%(57 flights)
On-time trend by month
87%
May

Jun 65% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%37
July 202579%28
August 202584%31
September 202587%30
October 202581%31
November 202576%29
December 202566%29
January 202686%28
February 202665%26
March 202692%49
April 202692%36
May 202687%15
Departures on time
83%
Diverted
0.3%
Flights flown
369
Months covered
12

Keep nerding

Based on 378 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.