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Flight Reliability

DL 4084 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4084 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
10 min early
Average arrival delay
0%
Cancelled
13 min early
Median arrival delay

Based on 432 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon98%(61 flights)
  • Tue95%(61 flights)
  • Wed93%(61 flights)
  • Thu97%(62 flights)
  • Fri100%(62 flights)
  • Sat87%(63 flights)
  • Sun92%(62 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM95%(329 flights)
  • 12–3 PM94%(102 flights)
On-time trend by month
89%
May

Jun 93% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 2025100%31
August 202597%31
September 202597%30
October 202594%31
November 202597%30
December 202595%43
January 202698%62
February 202689%56
March 2026100%14
April 202694%18
May 202689%56
Departures on time
95%
Diverted
0%
Flights flown
432
Months covered
12

Keep nerding

Based on 432 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.