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Flight Reliability

DL 5122 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5122 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
11 min
Average arrival delay
0.8%
Cancelled
7 min early
Median arrival delay

Based on 375 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon63%(51 flights)
  • Tue87%(52 flights)
  • Wed83%(52 flights)
  • Thu86%(51 flights)
  • Fri78%(51 flights)
  • Sat84%(57 flights)
  • Sun79%(58 flights)
On-time by departure window
  • 6–9 AM90%(171 flights)
  • 9 AM–12 PM73%(102 flights)
  • 12–3 PM74%(68 flights)
  • 3–6 PM68%(31 flights)
On-time trend by month
66%
May

Jun 80% → May 66% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202590%29
August 202587%30
September 2025100%26
October 202590%31
December 202592%24
January 202679%14
February 202695%19
March 202661%44
April 202675%56
May 202666%62
Departures on time
81%
Diverted
0%
Flights flown
372
Months covered
12

Keep nerding

Based on 375 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.