Planes overhead in NW9
Barnet, Brent and Harrow, London. All 1,415 of its postcodes measured (68 PO boxes and other large-user postcodes left out), January to August 2026.
For Heathrow's expansion consultation, open until 22 December 2026: the planes over Barnet and the planes over Brent, council by council.
From Heathrow
Planes land and take off into the wind, so the weather decides which way Heathrow flies, and that decides how many pass over NW9. Across its postcodes, January to August 2026:
On a day it flies west, 56% of days
Up to 44
a day
Of its 1,415 postcodes:
- 10 to 99
- 1,400
- under 10
- 15
On a day it flies both ways, 15% of days
Up to 55
a day
Of its 1,415 postcodes:
- 10 to 99
- 1,415
On a day it flies east, 29% of days
Up to 56
a day
Of its 1,415 postcodes:
- 10 to 99
- 1,415
Each sector's bar splits its postcodes by how many planes pass over them a day; the figure above it counts those in the busiest band the sector reaches. The list above gives the whole district's counts.
| Sector | Flying west56% of days | Both ways15% of days | Flying east29% of days |
|---|---|---|---|
| NW9 0211 postcodes | 211 at 10 to 99 | 211 at 10 to 99 | 211 at 10 to 99 |
| NW9 4128 postcodes | 128 at 10 to 99 | 128 at 10 to 99 | 128 at 10 to 99 |
| NW9 5364 postcodes | 364 at 10 to 99 | 364 at 10 to 99 | 364 at 10 to 99 |
| NW9 6172 postcodes | 172 at 10 to 99 | 172 at 10 to 99 | 172 at 10 to 99 |
| NW9 7176 postcodes | 176 at 10 to 99 | 176 at 10 to 99 | 176 at 10 to 99 |
| NW9 8193 postcodes | 178 at 10 to 99 | 193 at 10 to 99 | 193 at 10 to 99 |
| NW9 9171 postcodes | 171 at 10 to 99 | 171 at 10 to 99 | 171 at 10 to 99 |
Also counted here: Luton, at most 1 a day over any of its postcodes; Stansted, at most 1 a day over any of its postcodes.
2 of its postcodes have a position ONS estimates, so their figures may be for a spot a few hundred metres away.
What counts as overhead
Overhead means more than halfway up the sky (48.5 degrees or more) and below 7,000 ft, the CAA's definition of an overflight (CAP 1498). A day counts as one way when 80% of its flights used that way. PO boxes and other postcodes for organisations that receive a lot of post are left out: they sit at a delivery office or a business, not at homes.
Near NW9
NW4 HA8 NW7 HA9 NW2 NW11 N3 HA3
The councils
- Barnet: noise and liveability score
- Brent: noise and liveability score
- Harrow: noise and liveability score
Where these figures come from
Counted from community flight tracking, checked against the CAA's monthly totals for Heathrow. Flight tracks: adsb.lol (ODbL 1.0); Weather at each airport: Iowa Environmental Mesonet; Ground heights: Contains OS data © Crown copyright and database right; Postcode positions: ONS National Statistics Postcode Lookup (OGL). Licence: Open Database License (ODbL) 1.0.