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Flight Reliability

DL 3140 · Delta Air Lines

Dayton → Atlanta (DAY–ATL)

91
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
2 min early
Average arrival delay
2.0%
Cancelled
16 min early
Median arrival delay

Based on 349 historical flights. Data through May 2026.

What the data says

Skip Wednesday if you can.

DL 3140 arrived on time 96% of the time on Thursdays. On Wednesdays: 88%.

Better than the Delta Air Lines network average.

DL 3140 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon90%(49 flights)
  • Tue88%(50 flights)
  • Wed88%(50 flights)
  • Thu96%(50 flights)
  • Fri92%(50 flights)
  • Sat91%(45 flights)
  • Sun92%(48 flights)
On-time by departure window
  • 3–6 AM89%(28 flights)
  • 6–9 AM91%(314 flights)
On-time trend by month
84%
May

Jun 93% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202594%31
August 202594%31
September 202583%30
October 202597%31
November 202593%29
December 202584%19
January 202679%24
February 2026100%27
March 202693%30
April 202693%30
May 202684%31
Departures on time
91%
Diverted
0%
Flights flown
342
Months covered
12

Same route, other flights

Keep nerding

Based on 349 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.