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Flight Reliability

DL 5812 · Delta Air Lines

Columbus → Detroit (CMH–DTW)96% of its flights flew this route. The rest (RDU–BOS) are included in these numbers.

99
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
6 min early
Average arrival delay
0.6%
Cancelled
13 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

Skip Monday if you can.

DL 5812 arrived on time 98% of the time on Wednesdays. On Mondays: 86%.

Better than the CMH–DTW route average.

DL 5812 arrived on time 93% of the time, versus 85% across the CMH–DTW route.

Better than the Delta Air Lines network average.

DL 5812 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 5812 arrived on time 97% of the time over the last three months in the data, compared with 88% in the three months before that.

The breakdown

On-time by weekday
  • Mon86%(51 flights)
  • Tue94%(52 flights)
  • Wed98%(52 flights)
  • Thu94%(52 flights)
  • Fri92%(50 flights)
  • Sat94%(52 flights)
  • Sun94%(52 flights)
On-time by departure window
  • 6–9 AM93%(349 flights)
  • 9 AM–12 PM92%(12 flights)
On-time trend by month
100%
May

Jun 93% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202577%31
August 2025100%31
September 2025100%29
October 202597%30
November 2025100%29
December 202581%31
January 202687%30
February 202696%28
March 202694%31
April 202697%30
May 2026100%31
Departures on time
93%
Diverted
0%
Flights flown
361
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.