Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 2839 · Delta Air Lines

Detroit → Raleigh–Durham (DTW–RDU)

75
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
11 min
Average arrival delay
1.6%
Cancelled
7 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 2839 departing between 6–9 PM arrived on time 93% of the time, versus 73% between 9 PM–12 AM.

Sunday scaries are real for this one.

DL 2839 arrived on time 81% of the time on Fridays and just 62% on Sundays. That gap is worth planning around.

Lagging the DTW–RDU route.

DL 2839 arrived on time 74% of the time, versus 83% across the DTW–RDU route.

Lagging the Delta Air Lines network.

DL 2839 arrived on time 74% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon77%(52 flights)
  • Tue73%(51 flights)
  • Wed73%(52 flights)
  • Thu74%(50 flights)
  • Fri81%(52 flights)
  • Sat78%(49 flights)
  • Sun62%(52 flights)
On-time by departure window
  • 6–9 PM93%(15 flights)
  • 9 PM–12 AM73%(343 flights)
On-time trend by month
70%
May

Jun 64% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%28
July 202561%31
August 202571%31
September 202590%30
October 202577%31
November 202579%29
December 202561%31
January 202682%28
February 202686%28
March 202665%31
April 202680%30
May 202670%30
Departures on time
77%
Diverted
0%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.