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Flight Reliability

DL 1671 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1671 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

76%
Arrive within 15 minutes
14 min
Average arrival delay
2.7%
Cancelled
6 min early
Median arrival delay

Based on 600 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(84 flights)
  • Tue72%(89 flights)
  • Wed80%(85 flights)
  • Thu74%(83 flights)
  • Fri75%(88 flights)
  • Sat83%(72 flights)
  • Sun72%(82 flights)
On-time by departure window
  • 12–3 PM78%(163 flights)
  • 3–6 PM78%(202 flights)
  • 6–9 PM73%(211 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
70%
Apr

Jun 73% → Apr 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202559%51
August 202563%60
September 202578%60
October 202584%61
November 202586%57
December 202579%52
January 202691%55
February 202681%53
March 202676%58
April 202670%40
Departures on time
77%
Diverted
0.2%
Flights flown
583
Months covered
12

Keep nerding

Based on 600 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.