UA2664

UA2664 arrived on time 88.9% of the time, against 83.4% for all SFO → BWI flights, so this departure is 5.5 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 1.3 points better.

UA2664’s scheduled departure has moved during the period FlyerIntel has on file: it typically left around 8:30 AM earlier on, and around 9:15 AM 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 · 650 operations, May 2024 – July 2026 · If UA2664 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 · May 2024 – July 2026

Share of the delay minutes US DOT attributed to each cause for UA2664 on SFO → BWI. Only delays of 15 minutes or more are attributed.

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

The aircraft flying UA2664 came in 15 or more minutes late on 13% 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 SFO just before it, using the tail number in the DOT file, 549 of 647 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 May 2024 – July 2026

UA2664 pushes back an average of 2.9 minutes late and reaches the gate at BWI an average of 6.3 minutes early. The 9.2 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 23.8 minutes on the taxiways at SFO, 1.3 minutes longer than a typical SFO departure in the same hour.

On arrival at BWI, UA2664 spends 5.9 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 BWI 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 BWI. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 26,943 departures from SFO scheduled in the clock hour UA2664 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at BWI (299,179 flights), not just UA2664’s own. More on taxi time.

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

UA2664 is scheduled out of SFO at 9:10 AM, in the 9 AM–10 AM bank. Departures from SFO in that hour arrive on time 82.7% of the time against 78.7% across the airport’s whole day — the slot alone is worth 4.0 points better before anything about this particular flight is considered.

The two airport figures cover every departure from SFO 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 · May 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 UA2664 currently operates. Blending them would produce an average of two different flights.

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

• UA1175 SFO→HNL United Airlines flight out of SFO, SFO to HNL, departs 9:20 AM, on time 85.7%
• UA1668 AUS→SFO United Airlines flight into SFO, AUS to SFO, departs 9:30 AM, on time 79.5%
• UA1362 DEN→BWI United Airlines flight into BWI, DEN to BWI, departs 9:40 AM, on time 87.6%