Planes overhead in SW1A
Westminster, London. All 81 of its postcodes measured (64 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 Westminster, 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 SW1A. Across its postcodes, January to August 2026:
On a day it flies west, 56% of days
Up to 21
a day
Of its 81 postcodes:
- 10 to 99
- 34
- under 10
- 47
On a day it flies both ways, 15% of days
Up to 15
a day
Of its 81 postcodes:
- 10 to 99
- 24
- under 10
- 57
On a day it flies east, 29% of days
Under 1
a day, at all 81 of its postcodes
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 |
|---|---|---|---|
| SW1A 147 postcodes | 47 under 10 | 47 under 10 | 47 under 10 |
| SW1A 234 postcodes | 34 at 10 to 99 | 24 at 10 to 99 | 34 under 10 |
Also counted here: London City, at most 1 a day over any of its postcodes.
1 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 SW1A
SW1Y SW1H WC2N SW1E WC2H WC2E SW1P WC2R
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.