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Flight Reliability

DL 5478 · Delta Air Lines

Detroit → Cincinnati (DTW–CVG)99% of its flights flew this route. The rest (CHA–LGA) are included in these numbers.

72
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
22 min
Average arrival delay
1.2%
Cancelled
5 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 78% of the time, against 75% between 9 PM–12 AM.

Friday is doing you no favors.

DL 5478 arrived on time 79% of the time on Mondays. On Fridays: 67%.

A bit behind the Delta Air Lines network.

DL 5478 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 5478 arrived on time 71% of the time over the last three months in the data, compared with 63% in the three months before that.

The breakdown

On-time by weekday
  • Mon79%(48 flights)
  • Tue78%(50 flights)
  • Wed72%(47 flights)
  • Thu78%(46 flights)
  • Fri67%(48 flights)
  • Sat75%(44 flights)
  • Sun75%(47 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 6–9 PM78%(18 flights)
  • 9 PM–12 AM75%(309 flights)
On-time trend by month
73%
May

Jun 76% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%29
July 202560%30
August 202581%31
September 202597%29
October 202594%31
November 202579%29
December 202556%18
January 202662%26
February 202671%21
March 202670%30
April 202670%30
May 202673%26
Departures on time
78%
Diverted
0%
Flights flown
330
Months covered
12

Same route, other flights

Keep nerding

Based on 334 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.