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Flight Reliability

DL 1827 · Delta Air Lines

Cincinnati → Atlanta (CVG–ATL)82% of its flights flew this route. The rest (LAX–MSP, ATL–CVG) are included in these numbers.

70
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
3 min
Average arrival delay
3.5%
Cancelled
10 min early
Median arrival delay

Based on 114 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 81% of the time, against 76% between 6–9 PM.

Sunday scaries are real for this one.

DL 1827 arrived on time 86% of the time on Fridays and just 69% on Sundays. That gap is worth planning around.

Lagging the CVG–ATL route.

DL 1827 arrived on time 76% of the time, versus 87% across the CVG–ATL route.

A bit behind the Delta Air Lines network.

DL 1827 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon80%(25 flights)
  • Tue—(2 flights)
  • Wed—(2 flights)
  • Thu74%(23 flights)
  • Fri86%(22 flights)
  • Sat70%(10 flights)
  • Sun69%(26 flights)
On-time by departure window
  • 6–9 AM81%(16 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM76%(91 flights)
On-time trend by month
80%
Dec

Jun 53% → Dec 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%15
July 202571%17
August 202579%14
September 2025100%13
October 202581%16
November 202570%10
December 202580%20
Departures on time
79%
Diverted
0%
Flights flown
110
Months covered
9

Same route, other flights

Keep nerding

Based on 114 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.