DL436

DL436 arrived on time 61.5% of the time, against 72.8% for all ATL → DFW flights, so this departure is 11.3 percentage points worse than the route as a whole. Against Delta Air Lines’ own flights on this route it is 12.3 points worse.

Source: US DOT Bureau of Transportation Statistics · 673 operations, January 2024 – July 2026 · If DL436 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.

This flight runs unusually far behind the carrier's own average on this route, worse than 92% of 11,589 comparable flight numbers.

61.5% on time for this specific departure, against 73.8% for the same carrier's other flights on this route.

Source: FlyerIntel analysis of US DOT BTS data · January 2024 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.

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

Share of the delay minutes US DOT attributed to each cause for DL436 on ATL → DFW. Only delays of 15 minutes or more are attributed.

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

When the aircraft came in 15 or more minutes late, DL436 pushed back an average of 54 minutes late; when it came in on time or early, an average of 10 minutes late.

Each departure is matched to the flight the same aircraft flew into ATL just before it, using the tail number in the DOT file, 630 of 656 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 January 2024 – July 2026

On arrival at DFW, DL436 spends 13.6 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 DFW 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 DFW. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 52,446 departures from ATL scheduled in the clock hour DL436 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DFW (961,642 flights), not just DL436’s own. More on taxi time.

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

DL436 is scheduled out of ATL at 5:15 PM, in the 5 PM–6 PM bank. Departures from ATL in that hour arrive on time 72.3% of the time against 78.7% across the airport’s whole day — the slot alone is worth 6.4 points worse before anything about this particular flight is considered.

The two airport figures cover every departure from ATL 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 · January 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 DL436 currently operates. Blending them would produce an average of two different flights.

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

Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. DL436 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.

• DL374 ATL→DFW Delta Air Lines on the same route, departs 3:36 PM, on time 69.7%
• DL31 ATL→DFW Delta Air Lines on the same route, departs 8:55 PM, on time 65.7%
• F93021 ATL→DFW Frontier Airlines on the same route, departs 10:54 AM, on time 64.4%