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Flight Reliability

DL 3751 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3751 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

81%
Arrive within 15 minutes
8 min
Average arrival delay
0.6%
Cancelled
11 min early
Median arrival delay

Based on 508 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(78 flights)
  • Tue72%(76 flights)
  • Wed89%(74 flights)
  • Thu90%(76 flights)
  • Fri80%(73 flights)
  • Sat81%(53 flights)
  • Sun77%(75 flights)
On-time by departure window
  • 6–9 AM84%(104 flights)
  • 9 AM–12 PM72%(75 flights)
  • 12–3 PM83%(186 flights)
  • 3–6 PM81%(140 flights)
On-time trend by month
91%
May

Jun 83% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%46
July 202557%49
August 202581%52
September 202590%52
October 202597%58
November 202584%56
December 202556%25
January 202665%34
February 202678%37
March 202683%18
April 202686%22
May 202691%56
Departures on time
81%
Diverted
0%
Flights flown
505
Months covered
12

Keep nerding

Based on 508 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.