Planes overhead in BS21
North Somerset, Bristol. All 695 of its postcodes measured, January to August 2026.
From Bristol
Planes land and take off into the wind, so the weather decides which way Bristol flies, and that decides how many pass over BS21. Across its postcodes, January to August 2026:
- On a day it flies west (54% of days): up to 60 a day; of its 695 postcodes, 6 at 10 to 99, 689 under 10
- On a day it flies both ways (21% of days): up to 33 a day; of its 695 postcodes, 32 at 10 to 99, 663 under 10
- On a day it flies east (25% of days): up to 14 a day; of its 695 postcodes, 110 at 10 to 99, 585 under 10
The table counts the postcodes of each sector by how many planes pass over them a day: 100 or more, 10 to 99, or under 10.
| Sector | Flying west54% of days | Both ways21% of days | Flying east25% of days |
|---|---|---|---|
| BS21 599 postcodes | 99 under 10 | 99 under 10 | 99 under 10 |
| BS21 6310 postcodes | 5 at 10 to 99305 under 10 | 2 at 10 to 99308 under 10 | 7 at 10 to 99303 under 10 |
| BS21 7282 postcodes | 1 at 10 to 99281 under 10 | 30 at 10 to 99252 under 10 | 103 at 10 to 99179 under 10 |
| BS21 94 postcodes | 4 under 10 | 4 under 10 | 4 under 10 |
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.
Near BS21
BS49 BS20 BS22 BS29 BS24 BS23 BS41 BS11
The councils
Where these figures come from
Counted from community flight tracking, checked against the CAA's monthly totals for Bristol. 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.