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Flight Reliability

DL 5212 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5212 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

70%
Arrive within 15 minutes
25 min
Average arrival delay
6.4%
Cancelled
7 min early
Median arrival delay

Based on 500 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(75 flights)
  • Tue69%(71 flights)
  • Wed74%(65 flights)
  • Thu65%(71 flights)
  • Fri70%(79 flights)
  • Sat65%(34 flights)
  • Sun69%(73 flights)
On-time by departure window
  • 12–3 PM71%(177 flights)
  • 3–6 PM69%(225 flights)
  • 6–9 PM68%(66 flights)
On-time trend by month
64%
May

Jun 65% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%51
July 202569%49
August 202578%55
September 202589%54
October 202571%52
November 202564%45
December 202541%37
January 202674%27
February 202676%29
April 202667%15
May 202664%45
Departures on time
71%
Diverted
0%
Flights flown
468
Months covered
12

Keep nerding

Based on 500 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.