Planes overhead in N12
Barnet, London. All 669 of its postcodes measured (29 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, 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 N12. Across its postcodes, January to August 2026:
On a day it flies west, 56% of days
Up to 102
a day
Of its 669 postcodes:
- 100 or more
- 10
- 10 to 99
- 659
On a day it flies both ways, 15% of days
Up to 93
a day
Of its 669 postcodes:
- 10 to 99
- 669
On a day it flies east, 29% of days
Up to 66
a day
Of its 669 postcodes:
- 10 to 99
- 669
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 |
|---|---|---|---|
| N12 0171 postcodes | 10 at 100+ | 171 at 10 to 99 | 171 at 10 to 99 |
| N12 7119 postcodes | 119 at 10 to 99 | 119 at 10 to 99 | 119 at 10 to 99 |
| N12 8202 postcodes | 202 at 10 to 99 | 202 at 10 to 99 | 202 at 10 to 99 |
| N12 9177 postcodes | 177 at 10 to 99 | 177 at 10 to 99 | 177 at 10 to 99 |
Also counted here: Stansted, at most 2 a day over any of its postcodes; Luton, at most 1 a day over any of its postcodes.
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 N12
The councils
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.