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Flight Reliability

DL 1747 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1747 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

77%
Arrive within 15 minutes
13 min
Average arrival delay
0.7%
Cancelled
3 min early
Median arrival delay

Based on 539 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(76 flights)
  • Tue76%(74 flights)
  • Wed76%(76 flights)
  • Thu91%(74 flights)
  • Fri68%(72 flights)
  • Sat82%(81 flights)
  • Sun69%(80 flights)
On-time by departure window
  • 9 AM–12 PM74%(168 flights)
  • 12–3 PM70%(168 flights)
  • 3–6 PM84%(135 flights)
  • 6–9 PM86%(62 flights)
On-time trend by month
81%
May

Jun 92% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%36
July 202587%55
August 202584%62
September 202593%14
November 202579%38
December 202541%29
January 202655%62
February 202679%56
March 202668%59
April 202687%60
May 202681%62
Departures on time
78%
Diverted
0.4%
Flights flown
533
Months covered
11

Keep nerding

Based on 539 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.