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Flight Reliability

DL 4940 · Delta Air Lines

MLU → Atlanta (MLU–ATL)

84
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
6 min
Average arrival delay
2.5%
Cancelled
10 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesday is the weak spot.

DL 4940 arrived on time 92% of the time on Fridays. On Tuesdays: 83%.

Better than the MLU–ATL route average.

DL 4940 arrived on time 88% of the time, versus 79% across the MLU–ATL route.

A bit ahead of the Delta Air Lines network.

DL 4940 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 4940 arrived on time 88% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon88%(49 flights)
  • Tue83%(52 flights)
  • Wed87%(52 flights)
  • Thu92%(51 flights)
  • Fri92%(52 flights)
  • Sat86%(49 flights)
  • Sun88%(49 flights)
On-time trend by month
94%
May

Jun 86% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%28
July 202590%31
August 2025100%31
September 202597%30
October 202584%31
November 202586%29
December 202579%29
January 202686%28
February 202682%27
March 202690%29
April 202680%30
May 202694%31
Departures on time
89%
Diverted
0.5%
Flights flown
354
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.