Is Sydenham under a flight path?

Yes — Sydenham is directly under Sydney Kingsford Smith Airport flight paths, with around 24 overflights on a typical day, mostly 34L departures.

What time do planes start over Sydenham?

The first movements typically pass over Sydenham around 6:39am, once the curfew (11 PM – 6 AM) ends. Traffic builds through the morning peak.

Is it quieter in Sydenham on weekends?

Not much — weekday and weekend traffic over Sydenham is similar (27 vs 29 overflights a day).

Why is it loud some weeks and quiet others?

Runway direction. Wind decides which runways are in use, and only some configurations put traffic over Sydenham — so noise arrives in multi-day patterns rather than evenly.

Aircraft noise in Sydenham (2044)

Aircraft fly over Sydenham roughly 24 times a day, the bulk of them a mix of arrivals and departures at Sydney Kingsford Smith Airport, below 3,000 ft. Estimated peak ground noise reaches 88–93 dB — enough to interrupt conversation outdoors. It ranks #46 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 Sydenham · updated monthly

Overflights / day

busiest on Fridays

Typical altitude

800 ft

over the suburb

Est. peak noise

88–93 dB

under the flight path, modelled

Sydney rank

#46 / 139

louder than 67% of measured suburbs

A typical day of overflights (all sources)

12a6a12p6p

First movement ~6:39amBusiest hour 10amLast movement ~9:25pm

Where the noise comes from

Sydney Kingsford Smith Airport

live map →

24 overflights/day (100%) · typically 800 ft

Sydenham sits hard against the airport under the 34L departure path: on north-flow days, jets pass extremely low at full climb thrust within moments of take-off. South-flow days swap the departures for 16R arrivals on short final. Few Sydney suburbs are closer to the runway ends — the curfew is the suburb's main respite.

How nearby suburbs compare

Suburb	Overflights / day	Rank
Marrickville	102	#3
St Peters	52	#13
Tempe	47	#15
Newtown	45	#16
Sydenham	24	#46

Common questions

Is Sydenham under a flight path?: Yes — Sydenham is directly under Sydney Kingsford Smith Airport flight paths, with around 24 overflights on a typical day, mostly 34L departures.
What time do planes start over Sydenham?: The first movements typically pass over Sydenham around 6:39am, once the curfew (11 PM – 6 AM) ends. Traffic builds through the morning peak.
Is it quieter in Sydenham on weekends?: Not much — weekday and weekend traffic over Sydenham is similar (27 vs 29 overflights a day).
Why is it loud some weeks and quiet others?: Runway direction. Wind decides which runways are in use, and only some configurations put traffic over Sydenham — so noise arrives in multi-day patterns rather than evenly.

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 Sydenham.