Planes overhead in TW9
Richmond upon Thames, London. All 597 of its postcodes measured, January to August 2026.
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 TW9. Across its postcodes, January to August 2026:
- On a day it flies west (56% of days): up to 318 a day; of its 597 postcodes, 386 at 100+, 145 on an edge, 66 under 10
- On a day it flies both ways (15% of days): up to 190 a day; of its 597 postcodes, 375 at 100+, 155 on an edge, 67 under 10
- On a day it flies east (29% of days): up to 4 a day; of its 597 postcodes, 597 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 west56% of days | Both ways15% of days | Flying east29% of days |
|---|---|---|---|
| TW9 1160 postcodes | 66 at 100+69 on an edge25 under 10 | 60 at 100+75 on an edge25 under 10 | 160 under 10 |
| TW9 2148 postcodes | 105 at 100+27 on an edge16 under 10 | 104 at 100+28 on an edge16 under 10 | 148 under 10 |
| TW9 3126 postcodes | 81 at 100+23 on an edge22 under 10 | 78 at 100+25 on an edge23 under 10 | 126 under 10 |
| TW9 4142 postcodes | 113 at 100+26 on an edge3 under 10 | 112 at 100+27 on an edge3 under 10 | 142 under 10 |
| TW9 921 postcodes | 21 at 100+ | 21 at 100+ | 21 under 10 |
On an edge: the postcode is on the edge of a flight path, where a few metres decide whether a plane counts as overhead, and the fewest and the most within 100 m of it fall in different bands.
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 TW9
SW14 TW8 TW10 TW7 TW1 W4 SW13 SW15
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.