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Flight Reliability

DL 1537 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1537 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

80%
Arrive within 15 minutes
5 min
Average arrival delay
1.1%
Cancelled
13 min early
Median arrival delay

Based on 456 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(74 flights)
  • Tue84%(73 flights)
  • Wed79%(72 flights)
  • Thu95%(73 flights)
  • Fri79%(65 flights)
  • Sat77%(34 flights)
  • Sun82%(60 flights)
On-time by departure window
  • 6–9 AM100%(12 flights)
  • 12–3 PM80%(373 flights)
  • 3–6 PM87%(37 flights)
  • 6–9 PM63%(24 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
70%
May

Jun 73% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%48
July 202572%46
August 202583%41
September 202591%32
October 202580%46
November 202579%47
December 202571%45
January 202686%29
February 202689%28
March 202687%30
April 202693%29
May 202670%30
Departures on time
79%
Diverted
0%
Flights flown
451
Months covered
12

Keep nerding

Based on 456 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.