Aircraft noise in Baulkham Hills (2153)
Aircraft fly over Baulkham Hills roughly 36 times a day, the bulk of them a mix of arrivals and departures at Sydney Kingsford Smith Airport, mostly above 5,000 ft. Helicopters and light aircraft add another 2 low overflights a day. Estimated peak ground noise reaches 71–78 dB — enough to interrupt conversation outdoors. It ranks #22 of 139 Sydney suburbs for aircraft noise exposure. (Flight Path Noise monitoring data, 90 days to 2026-08-21.)
Data: 90 days to 2026-08-21 · all tracked aircraft over Baulkham Hills · updated monthly
Where the noise comes from
Baulkham Hills hears traffic from 2 distinct sources:
Sydney Kingsford Smith Airport
live map →34 overflights/day (94%) · typically 6,000 ft
Baulkham Hills sits under high crossing traffic on the north-western flank — arrivals descending toward the approach sequence and departures climbing out, at altitudes that keep individual aircraft soft. The streams are steady rather than sharp; most days the noise reads as background rumble, noticeable mainly in quiet moments.
Helicopters & other light aircraft
2 overflights/day (6%) · typically 1,400 ft
Around 2 low overflights a day come from aircraft not operating at a tracked airport — helicopters, seaplanes and light aircraft transiting the area. Light-aircraft counts are tracked overflights only — many training and private aircraft carry no ADS-B transponder, so true numbers are higher.
Light-aircraft counts are tracked overflights only — many training and private aircraft carry no ADS-B transponder, so true numbers are higher.
How nearby suburbs compare
| Suburb | Overflights / day | Rank |
|---|---|---|
| Baulkham Hills | 36 | #22 |
| North Rocks | 26 | #40 |
| Northmead | 24 | #43 |
| West Pennant Hills | 23 | #52 |
| Winston Hills | 16 | #79 |
Common questions
- Is Baulkham Hills under a flight path?
- Yes — Baulkham Hills is near Sydney Kingsford Smith Airport flight paths, with around 36 overflights on a typical day, mostly a mix of arrivals and departures.
- Which airport's aircraft fly over Baulkham Hills?
- More than one source: Sydney Kingsford Smith Airport (~34/day), other low-flying aircraft (~2/day). The breakdown above shows each source's pattern.
- What time do planes start over Baulkham Hills?
- The first movements typically pass over Baulkham Hills around 6:31am, once the curfew (11 PM – 6 AM) ends. Traffic builds through the morning peak.
- Is it quieter in Baulkham Hills on weekends?
- Slightly — weekends average about 17% fewer overflights than weekdays (32 vs 39 a day).
- Do planes fly over Baulkham Hills at night?
- The main airport's curfew restricts movements between 11 PM – 6 AM, so overnight overflights are rare. The last movements are typically around 10:05pm.
Checking a specific address?
This page shows suburb-wide averages. An address report gives you the exact overflight count, altitudes, hourly pattern and noise estimate for one property. Leave your email and we'll let you know when reports are ready for Baulkham Hills.
