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Flight Reliability

DL 2578 · Delta Air Lines

Detroit → Austin (DTW–AUS)

77
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
10 min
Average arrival delay
1.7%
Cancelled
4 min early
Median arrival delay

Based on 300 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

DL 2578 arrived on time 86% of the time on Tuesdays and just 64% on Mondays. That gap is worth planning around.

A bit behind the DTW–AUS route.

DL 2578 arrived on time 76% of the time, versus 80% across the DTW–AUS route.

A bit behind the Delta Air Lines network.

DL 2578 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

Recent months have been rougher.

DL 2578 arrived on time 72% 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
  • Mon64%(44 flights)
  • Tue86%(43 flights)
  • Wed83%(42 flights)
  • Thu76%(41 flights)
  • Fri74%(43 flights)
  • Sat76%(38 flights)
  • Sun71%(44 flights)
On-time by departure window
  • 3–6 PM—(2 flights)
  • 6–9 PM75%(284 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
50%
May

Jun 63% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202552%31
August 202569%26
September 202591%21
October 202584%31
November 202586%28
December 202586%28
January 202693%14
March 202676%21
April 202689%28
May 202650%28
Departures on time
78%
Diverted
0%
Flights flown
295
Months covered
12

Same route, other flights

Keep nerding

Based on 300 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.