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Flight Reliability

DL 3166 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3166 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
17 min
Average arrival delay
0.8%
Cancelled
5 min early
Median arrival delay

Based on 253 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(36 flights)
  • Tue77%(35 flights)
  • Wed69%(35 flights)
  • Thu68%(34 flights)
  • Fri70%(37 flights)
  • Sat75%(32 flights)
  • Sun63%(40 flights)
On-time by departure window
  • 9 AM–12 PM94%(35 flights)
  • 3–6 PM86%(22 flights)
  • 6–9 PM65%(192 flights)
On-time trend by month
100%
Apr

Jun 48% → Apr 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%23
July 202543%28
August 202561%31
September 202567%30
October 202574%31
November 202587%30
December 202578%37
March 202691%23
April 2026100%12
Departures on time
72%
Diverted
0.8%
Flights flown
249
Months covered
10

Keep nerding

Based on 253 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.