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Flight Reliability

DL 4266 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4266 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

84%
Arrive within 15 minutes
9 min
Average arrival delay
1.1%
Cancelled
14 min early
Median arrival delay

Based on 566 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(104 flights)
  • Tue79%(28 flights)
  • Wed75%(24 flights)
  • Thu83%(98 flights)
  • Fri85%(104 flights)
  • Sat91%(100 flights)
  • Sun81%(101 flights)
On-time by departure window
  • 12–3 PM79%(229 flights)
  • 3–6 PM86%(279 flights)
  • 6–9 PM92%(51 flights)
On-time trend by month
91%
May

Jun 100% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%44
July 202586%58
August 202586%62
September 202592%50
October 202591%44
November 202576%46
December 202576%42
January 202663%46
February 202675%40
March 202686%42
April 202680%39
May 202691%46
Departures on time
85%
Diverted
0.2%
Flights flown
559
Months covered
12

Keep nerding

Based on 566 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.