Planes overhead in HA3
Harrow and Brent, London. All 1,209 of its postcodes measured (53 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 Brent and the planes over Harrow, 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 HA3. Across its postcodes, January to August 2026:
On a day it flies west, 56% of days
Up to 15
a day
Of its 1,209 postcodes:
- 10 to 99
- 289
- under 10
- 920
On a day it flies both ways, 15% of days
Up to 21
a day
Of its 1,209 postcodes:
- 10 to 99
- 1,173
- under 10
- 36
On a day it flies east, 29% of days
Up to 27
a day
Of its 1,209 postcodes:
- 10 to 99
- 1,016
- under 10
- 193
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 |
|---|---|---|---|
| HA3 0211 postcodes | 66 at 10 to 99 | 194 at 10 to 99 | 210 at 10 to 99 |
| HA3 5165 postcodes | 165 under 10 | 165 at 10 to 99 | 52 at 10 to 99 |
| HA3 6209 postcodes | 209 under 10 | 209 at 10 to 99 | 171 at 10 to 99 |
| HA3 7217 postcodes | 217 under 10 | 217 at 10 to 99 | 179 at 10 to 99 |
| HA3 8197 postcodes | 18 at 10 to 99 | 178 at 10 to 99 | 194 at 10 to 99 |
| HA3 9210 postcodes | 205 at 10 to 99 | 210 at 10 to 99 | 210 at 10 to 99 |
1 of its postcodes have a position ONS estimates, so their figures may be for a spot a few hundred metres away.
Over 3 of its postcodes, other flying passes too, from airfields, helicopters and airports we cannot check against official counts, so few planes from the airports we count does not mean a quiet sky there.
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 HA3
HA1 HA7 HA2 HA8 HA9 HA5 NW9 HA0
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.