Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 2979 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 2979 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

76%
Arrive within 15 minutes
9 min
Average arrival delay
2.3%
Cancelled
6 min early
Median arrival delay

Based on 308 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(58 flights)
  • Tue83%(30 flights)
  • Wed90%(29 flights)
  • Thu72%(54 flights)
  • Fri78%(51 flights)
  • Sat65%(23 flights)
  • Sun71%(55 flights)
On-time by departure window
  • 12–3 PM70%(30 flights)
  • 3–6 PM75%(185 flights)
  • 6–9 PM81%(85 flights)
On-time trend by month
90%
May

Jun 60% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202563%40
August 202579%42
September 202591%42
October 202587%47
November 202582%39
December 202563%16
April 202668%34
May 202690%10
Departures on time
75%
Diverted
0.3%
Flights flown
300
Months covered
9

Keep nerding

Based on 308 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.