Planes overhead in L35
Knowsley and St Helens, Merseyside. 742 of its 743 postcodes measured, the ones in Knowsley and St Helens, January to August 2026.
From Manchester
Planes land and take off into the wind, so the weather decides which way Manchester flies, and that decides how many pass over L35. Across its postcodes, January to August 2026:
- On a day it flies west (70% of days): up to 1 a day; of its 742 postcodes, 742 under 10
- On a day it flies both ways (10% of days): up to 6 a day; of its 742 postcodes, 742 under 10
- On a day it flies east (20% of days): up to 14 a day; of its 742 postcodes, 193 at 10 to 99, 549 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 west70% of days | Both ways10% of days | Flying east20% of days |
|---|---|---|---|
| L35 078 postcodes | 78 under 10 | 78 under 10 | 74 at 10 to 994 under 10 |
| L35 158 postcodes | 58 under 10 | 58 under 10 | 58 under 10 |
| L35 255 postcodes | 55 under 10 | 55 under 10 | 55 under 10 |
| L35 3178 postcodes | 178 under 10 | 178 under 10 | 178 under 10 |
| L35 475 postcodes | 75 under 10 | 75 under 10 | 67 at 10 to 998 under 10 |
| L35 593 postcodes | 93 under 10 | 93 under 10 | 93 under 10 |
| L35 645 postcodes | 45 under 10 | 45 under 10 | 43 at 10 to 992 under 10 |
| L35 763 postcodes | 63 under 10 | 63 under 10 | 63 under 10 |
| L35 860 postcodes | 60 under 10 | 60 under 10 | 7 at 10 to 9953 under 10 |
| L35 937 postcodes | 37 under 10 | 37 under 10 | 2 at 10 to 9935 under 10 |
5 of its postcodes have a position ONS estimates, so their figures may be for a spot a few hundred metres away.
Over 740 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.
Near L35
WA10 WA9 WA11 WA12 WN4 WN5 WN3 WN1
The councils
Where these figures come from
Counted from community flight tracking, checked against the CAA's monthly totals for Manchester. 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.