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Flight Reliability

DL 1739 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1739 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

71%
Arrive within 15 minutes
22 min
Average arrival delay
2.8%
Cancelled
2 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(53 flights)
  • Tue78%(54 flights)
  • Wed70%(54 flights)
  • Thu69%(55 flights)
  • Fri75%(56 flights)
  • Sat73%(52 flights)
  • Sun62%(61 flights)
On-time by departure window
  • 9 AM–12 PM90%(19 flights)
  • 12–3 PM71%(82 flights)
  • 3–6 PM72%(161 flights)
  • 6–9 PM67%(123 flights)
On-time trend by month
77%
Apr

Jun 57% → Apr 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%47
July 202563%59
August 202573%40
September 202570%30
October 202577%31
November 202573%26
December 202554%41
January 202691%11
February 202693%29
March 202680%35
April 202677%30
Departures on time
69%
Diverted
1.0%
Flights flown
385
Months covered
12

Keep nerding

Based on 400 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.