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Flight Reliability

DL 3766 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3766 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

94%
Arrive within 15 minutes
7 min early
Average arrival delay
1.9%
Cancelled
13 min early
Median arrival delay

Based on 627 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(90 flights)
  • Tue97%(88 flights)
  • Wed98%(88 flights)
  • Thu94%(87 flights)
  • Fri93%(87 flights)
  • Sat95%(86 flights)
  • Sun89%(89 flights)
On-time by departure window
  • 6–9 AM100%(16 flights)
  • 9 AM–12 PM93%(530 flights)
  • 12–3 PM97%(69 flights)
On-time trend by month
92%
May

Jun 97% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%60
July 202587%62
August 202595%62
September 202588%60
October 202597%62
November 202594%48
December 2025100%50
January 202694%31
February 202689%28
March 202693%55
April 202695%60
May 202692%37
Departures on time
93%
Diverted
0%
Flights flown
615
Months covered
12

Keep nerding

Based on 627 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.