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Flight Reliability

DL 1140 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1140 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

83%
Arrive within 15 minutes
3 min
Average arrival delay
1.9%
Cancelled
8 min early
Median arrival delay

Based on 318 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(49 flights)
  • Tue87%(45 flights)
  • Wed91%(42 flights)
  • Thu87%(47 flights)
  • Fri69%(49 flights)
  • Sat94%(34 flights)
  • Sun83%(46 flights)
On-time by departure window
  • 6–9 AM84%(31 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM78%(32 flights)
  • 3–6 PM85%(137 flights)
  • 6–9 PM80%(96 flights)
  • 9 PM–12 AM100%(15 flights)
On-time trend by month
87%
May

Jul 100% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 2025100%16
August 202576%33
September 2025100%18
October 202587%39
November 202586%36
December 202582%38
January 202679%24
February 202678%27
March 202680%20
April 202674%23
May 202687%30
Departures on time
81%
Diverted
0%
Flights flown
312
Months covered
12

Keep nerding

Based on 318 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.