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Flight Reliability

DL 3945 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3945 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
14 min
Average arrival delay
1.4%
Cancelled
7 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(56 flights)
  • Tue74%(54 flights)
  • Wed75%(52 flights)
  • Thu71%(51 flights)
  • Fri87%(53 flights)
  • Sat58%(24 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 12–3 PM76%(139 flights)
  • 3–6 PM76%(174 flights)
  • 6–9 PM89%(26 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
74%
Apr

Jun 73% → Apr 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%11
July 202568%50
August 202575%40
September 202591%34
October 202586%51
January 202673%22
February 202681%36
March 202667%57
April 202674%31
Departures on time
78%
Diverted
0.6%
Flights flown
340
Months covered
11

Keep nerding

Based on 347 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.