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Flight Reliability

DL 966 · Delta Air Lines

Cincinnati → Seattle (CVG–SEA)96% of its flights flew this route. The rest (PBI–LGA) are included in these numbers.

92
Nerd Approved
WanderNerd Reliability Score
85%
Arrive within 15 minutes
1 min
Average arrival delay
0.3%
Cancelled
7 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 966 departing between 6–9 AM arrived on time 86% of the time, versus 69% between 12–3 PM.

Sunday scaries are real for this one.

DL 966 arrived on time 90% of the time on Tuesdays. On Sundays: 81%.

Better than the CVG–SEA route average.

DL 966 arrived on time 85% of the time, versus 74% across the CVG–SEA route.

A bit ahead of the Delta Air Lines network.

DL 966 arrived on time 85% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue90%(52 flights)
  • Wed89%(52 flights)
  • Thu88%(51 flights)
  • Fri82%(51 flights)
  • Sat84%(50 flights)
  • Sun81%(53 flights)
On-time by departure window
  • 6–9 AM86%(345 flights)
  • 12–3 PM69%(16 flights)
On-time trend by month
97%
May

Jun 87% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202590%31
August 2025100%31
September 2025100%30
October 202593%30
November 2025100%28
December 202561%31
January 202677%31
February 202664%28
March 202657%30
April 202697%30
May 202697%31
Departures on time
93%
Diverted
0%
Flights flown
361
Months covered
12

Same route, other flights

Keep nerding

Based on 362 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.