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Flight Reliability

DL 3777 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3777 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

95%
Arrive within 15 minutes
6 min early
Average arrival delay
0.3%
Cancelled
10 min early
Median arrival delay

Based on 682 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon95%(100 flights)
  • Tue91%(102 flights)
  • Wed95%(102 flights)
  • Thu94%(102 flights)
  • Fri93%(100 flights)
  • Sat96%(72 flights)
  • Sun98%(102 flights)
On-time trend by month
92%
May

Jun 98% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202598%60
July 202597%62
August 202596%54
September 202589%54
October 202596%52
November 2025100%38
December 202595%58
January 202698%62
February 202688%56
March 202692%62
April 202695%60
May 202692%62
Departures on time
94%
Diverted
0%
Flights flown
680
Months covered
12

Keep nerding

Based on 682 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.