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Flight Reliability

DL 1479 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1479 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

91%
Arrive within 15 minutes
4 min early
Average arrival delay
1.9%
Cancelled
9 min early
Median arrival delay

Based on 571 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(85 flights)
  • Tue93%(85 flights)
  • Wed97%(87 flights)
  • Thu96%(90 flights)
  • Fri93%(88 flights)
  • Sat80%(35 flights)
  • Sun88%(89 flights)
On-time by departure window
  • 6–9 AM91%(257 flights)
  • 9 AM–12 PM90%(299 flights)
  • 12–3 PM—(3 flights)
On-time trend by month
100%
May

Jun 95% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202595%42
July 2025100%46
August 202598%42
September 202585%34
October 202596%50
November 202586%44
December 202581%58
January 202678%32
February 202681%43
March 202685%60
April 202698%58
May 2026100%50
Departures on time
91%
Diverted
0.2%
Flights flown
559
Months covered
12

Keep nerding

Based on 571 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.