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Flight Reliability

DL 4894 · Delta Air Lines

Detroit → CHA (DTW–CHA)92% of its flights flew this route. The rest (CVG–MSP, CHA–DTW) are included in these numbers.

78
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
15 min
Average arrival delay
1.1%
Cancelled
5 min early
Median arrival delay

Based on 270 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 4894 departing between 9 PM–12 AM arrived on time 100% of the time, versus 73% between 6–9 PM.

Sunday scaries are real for this one.

DL 4894 arrived on time 87% of the time on Saturdays and just 66% on Sundays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 4894 arrived on time 77% of the time, versus 81% across the Delta Air Lines network.

Recent months have been rougher.

DL 4894 arrived on time 71% of the time over the last three months in the data, compared with 89% in the three months before that.

The breakdown

On-time by weekday
  • Mon70%(37 flights)
  • Tue74%(39 flights)
  • Wed80%(39 flights)
  • Thu81%(37 flights)
  • Fri80%(39 flights)
  • Sat87%(38 flights)
  • Sun66%(38 flights)
On-time by departure window
  • 6–9 AM75%(20 flights)
  • 9 AM–12 PM—(6 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM83%(12 flights)
  • 6–9 PM73%(204 flights)
  • 9 PM–12 AM100%(24 flights)
On-time trend by month
77%
May

Jun 65% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%34
July 202570%30
August 202584%31
September 202597%30
October 202593%30
November 202576%29
December 202547%30
April 202689%18
May 202677%31
Departures on time
77%
Diverted
0%
Flights flown
267
Months covered
10

Same route, other flights

Keep nerding

Based on 270 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.