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Flight Reliability

DL 2939 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 2939 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

77%
Arrive within 15 minutes
13 min
Average arrival delay
1.9%
Cancelled
5 min early
Median arrival delay

Based on 517 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(92 flights)
  • Tue76%(50 flights)
  • Wed85%(53 flights)
  • Thu83%(94 flights)
  • Fri71%(87 flights)
  • Sat77%(43 flights)
  • Sun72%(87 flights)
On-time by departure window
  • 3–6 PM80%(178 flights)
  • 6–9 PM75%(327 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
74%
May

Jun 55% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%47
July 202564%45
August 202575%44
September 202583%42
October 202589%47
November 202580%39
December 202574%31
January 202679%38
February 202683%35
March 202675%47
April 202691%45
May 202674%46
Departures on time
76%
Diverted
0.2%
Flights flown
506
Months covered
12

Keep nerding

Based on 517 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.