DL813

DL813 arrived on time 80.4% of the time, against 78.9% for all DTW → PHX flights, so this departure is 1.5 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 2.6 points better.

Source: US DOT Bureau of Transportation Statistics · 658 operations, June 2024 – July 2026 · If DL813 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.

Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026

Share of the delay minutes US DOT attributed to each cause for DL813 on DTW → PHX. Only delays of 15 minutes or more are attributed.

Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026

The aircraft flying DL813 came in 15 or more minutes late on 12% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.

Each departure is matched to the flight the same aircraft flew into DTW just before it, using the tail number in the DOT file, 569 of 655 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.

Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026

DL813 pushes back an average of 12.3 minutes late and reaches the gate at PHX an average of 8.7 minutes late. The 3.6 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 15.4 minutes on the taxiways at DTW, 1.4 minutes shorter than a typical DTW departure in the same hour.

On arrival at PHX, DL813 spends 8.2 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at PHX spends on the ground before reaching the gate.

Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached PHX. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 34,911 departures from DTW scheduled in the clock hour DL813 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at PHX (598,496 flights), not just DL813’s own. More on taxi time.

Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026

DL813 is scheduled out of DTW at 12:50 PM, in the 12 PM–1 PM bank. Departures from DTW in that hour arrive on time 82.0% of the time against 79.6% across the airport’s whole day, so the hour DL813 leaves in is an ordinary one for DTW and explains nothing about its record either way.

The two airport figures cover every departure from DTW to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.

Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026 · Hours below 120 departures are not scored.

Because the same number has served different journeys, the statistics above describe only the route DL813 currently operates. Blending them would produce an average of two different flights.

Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026

Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. DL813 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.

• DL1135 DTW→PHX Delta Air Lines on the same route, departs 4:10 PM, on time 69.8%
• DL1070 DTW→PHX Delta Air Lines on the same route, departs 8:35 AM, on time 85.3%
• F94671 DTW→PHX Frontier Airlines on the same route, departs 8:30 AM, on time 78.6%
• DL2076 DTW→PHX Delta Air Lines on the same route, departs 8:55 PM, on time 72.0%