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Flight Reliability

DL 3699 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3699 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

82%
Arrive within 15 minutes
7 min
Average arrival delay
1.1%
Cancelled
10 min early
Median arrival delay

Based on 620 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(94 flights)
  • Tue83%(92 flights)
  • Wed84%(91 flights)
  • Thu87%(91 flights)
  • Fri78%(92 flights)
  • Sat83%(57 flights)
  • Sun78%(89 flights)
On-time by departure window
  • 3–6 AM—(7 flights)
  • 6–9 AM87%(112 flights)
  • 9 AM–12 PM81%(252 flights)
  • 12–3 PM82%(203 flights)
  • 3–6 PM59%(32 flights)
On-time trend by month
86%
May

Jun 77% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%43
July 202574%49
August 202580%60
September 202595%59
October 202580%55
November 202590%48
December 202561%59
January 202684%49
February 202693%42
March 202664%33
April 202694%47
May 202686%62
Departures on time
81%
Diverted
1.1%
Flights flown
606
Months covered
12

Keep nerding

Based on 620 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.