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Flight Reliability

DL 1180 · Delta Air Lines

Philadelphia → Atlanta (PHL–ATL)90% of its flights flew this route. The rest (ATL–DFW, DFW–ATL) are included in these numbers.

87
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min early
Average arrival delay
1.8%
Cancelled
12 min early
Median arrival delay

Based on 336 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 1180 departing between 6–9 AM arrived on time 89% of the time, versus 60% between 6–9 PM.

Sunday scaries are real for this one.

DL 1180 arrived on time 96% of the time on Wednesdays and just 78% on Sundays. That gap is worth planning around.

Better than the PHL–ATL route average.

DL 1180 arrived on time 86% of the time, versus 78% across the PHL–ATL route.

A bit ahead of the Delta Air Lines network.

DL 1180 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon80%(51 flights)
  • Tue91%(44 flights)
  • Wed96%(44 flights)
  • Thu89%(54 flights)
  • Fri81%(53 flights)
  • Sat91%(34 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 6–9 AM89%(295 flights)
  • 9 AM–12 PM—(2 flights)
  • 3–6 PM69%(13 flights)
  • 6–9 PM60%(20 flights)
On-time trend by month
94%
May

Jun 89% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%28
July 202584%31
August 202591%21
September 2025100%18
October 202593%30
November 2025100%27
December 202581%31
January 202655%22
February 202679%29
March 202675%32
April 202693%30
May 202694%31
Departures on time
88%
Diverted
0%
Flights flown
330
Months covered
12

Same route, other flights

Keep nerding

Based on 336 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.