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Flight Reliability

DL 5211 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5211 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

69%
Arrive within 15 minutes
18 min
Average arrival delay
1.7%
Cancelled
3 min early
Median arrival delay

Based on 351 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(49 flights)
  • Tue78%(49 flights)
  • Wed71%(49 flights)
  • Thu61%(49 flights)
  • Fri60%(47 flights)
  • Sat78%(51 flights)
  • Sun69%(51 flights)
On-time by departure window
  • 12–3 PM77%(125 flights)
  • 3–6 PM65%(220 flights)
On-time trend by month
70%
May

Jun 66% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%29
July 202553%30
August 202581%31
September 202580%30
October 202568%31
November 202561%28
December 202550%20
January 202656%27
February 202671%28
March 202674%31
April 202693%30
May 202670%30
Departures on time
69%
Diverted
0%
Flights flown
345
Months covered
12

Keep nerding

Based on 351 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.