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Flight Reliability

DL 1381 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1381 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

84%
Arrive within 15 minutes
5 min
Average arrival delay
2.3%
Cancelled
6 min early
Median arrival delay

Based on 432 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(63 flights)
  • Tue88%(56 flights)
  • Wed91%(57 flights)
  • Thu83%(63 flights)
  • Fri83%(60 flights)
  • Sat81%(52 flights)
  • Sun77%(70 flights)
On-time by departure window
  • 12–3 PM87%(155 flights)
  • 3–6 PM86%(159 flights)
  • 6–9 PM—(9 flights)
  • 9 PM–12 AM76%(98 flights)
On-time trend by month
88%
May

Jun 63% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%27
July 202576%25
August 202570%10
September 202592%13
October 202588%16
November 202586%22
December 2025100%21
January 202683%57
February 202681%52
March 202684%61
April 202690%58
May 202688%59
Departures on time
85%
Diverted
0.2%
Flights flown
421
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.