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Flight Reliability

DL 2857 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 2857 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
4 min
Average arrival delay
2.1%
Cancelled
7 min early
Median arrival delay

Based on 560 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(86 flights)
  • Tue73%(92 flights)
  • Wed87%(91 flights)
  • Thu85%(92 flights)
  • Fri77%(88 flights)
  • Sat88%(16 flights)
  • Sun90%(80 flights)
On-time by departure window
  • 3–6 PM82%(297 flights)
  • 6–9 PM80%(248 flights)
On-time trend by month
86%
May

Jun 71% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%51
July 202567%52
August 202567%43
September 202589%36
October 202589%52
November 202583%46
December 202565%34
January 202679%38
February 202691%42
March 202686%49
April 202694%52
May 202686%50
Departures on time
75%
Diverted
0.5%
Flights flown
545
Months covered
12

Keep nerding

Based on 560 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.