UA555

UA555 arrived on time 65.0% of the time, against 72.5% for all ATL → EWR flights, so this departure is 7.5 percentage points worse than the route as a whole. Against United Airlines’ own flights on this route it is 12.8 points worse.

UA555’s scheduled departure has moved during the period FlyerIntel has on file: it typically left around 3:45 PM earlier on, and around 4:30 PM more recently — a 45-minute shift, not the few minutes of day-to-day rounding every published schedule carries. Confirm the current departure time before booking around an older listing.

Source: US DOT Bureau of Transportation Statistics · 766 operations, February 2024 – July 2026 · If UA555 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's worst arrivals run unusually far past its typical one, a bigger gap than 99% of 11,788 comparable flight numbers.

A typical arrival is 1 min late, but the worst tenth run 142 minutes worse than that.

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

Share of the delay minutes US DOT attributed to each cause for UA555 on ATL → EWR. Only delays of 15 minutes or more are attributed.

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

When the aircraft came in 15 or more minutes late, UA555 pushed back an average of 102 minutes late; when it came in on time or early, an average of 22 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, 736 of 744 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 February 2024 – July 2026

On arrival at EWR, UA555 spends 10.1 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 EWR 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 EWR. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 72,506 departures from ATL scheduled in the clock hour UA555 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at EWR (387,854 flights), not just UA555’s own. More on taxi time.

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

UA555 is scheduled out of ATL at 3:49 PM, in the 3 PM–4 PM bank. Departures from ATL in that hour arrive on time 75.8% of the time against 78.7% across the airport’s whole day, so the hour UA555 leaves in is an ordinary one for ATL and explains nothing about its record either way.

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 · February 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 UA555 currently operates. Blending them would produce an average of two different flights.

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

Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. UA555 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.

• DL2340 ATL→EWR Delta Air Lines on the same route, departs 4:20 PM, on time 56.8%
• DL2312 ATL→EWR Delta Air Lines on the same route, departs 2:31 PM, on time 62.0%
• DL2322 ATL→EWR Delta Air Lines on the same route, departs 12:59 PM, on time 71.7%