Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 2402 · Delta Air Lines

Detroit → Philadelphia (DTW–PHL)

82
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
2 min
Average arrival delay
2.0%
Cancelled
11 min early
Median arrival delay

Based on 346 historical flights. Data through May 2026.

What the data says

Tuesdays have been rough.

DL 2402 arrived on time 94% of the time on Saturdays and just 71% on Tuesdays. That gap is worth planning around.

A bit ahead of the DTW–PHL route.

DL 2402 arrived on time 82% of the time, versus 79% across the DTW–PHL route.

Ticking up lately.

DL 2402 arrived on time 83% of the time over the last three months in the data, compared with 76% in the three months before that.

The breakdown

On-time by weekday
  • Mon77%(48 flights)
  • Tue71%(49 flights)
  • Wed83%(48 flights)
  • Thu90%(49 flights)
  • Fri81%(48 flights)
  • Sat94%(48 flights)
  • Sun80%(49 flights)
On-time by departure window
  • 3–6 PM—(1 flights)
  • 6–9 PM—(2 flights)
  • 9 PM–12 AM82%(336 flights)
On-time trend by month
83%
May

Jun 76% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%29
July 2025100%11
August 202574%31
September 202597%30
October 202594%31
November 202583%30
December 202571%31
January 202668%28
February 202689%27
March 202674%31
April 202690%30
May 202683%30
Departures on time
81%
Diverted
0%
Flights flown
339
Months covered
12

Same route, other flights

Keep nerding

Based on 346 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.