Radical plans to shift flight paths slightly south could mean more plane noise misery for up to 40,000 residents.
Council bosses have slammed air traffic control service NATS for failing to consult with residents about the proposals which would see an increased number of take-offs over their Brentford and Isleworth homes.
Cllr Barbara Reid, Hounslow's lead member for aviation, said: "In the short term these proposals will provide some respite for a few people but thousands of local residents will lose out."
John Stewart, chair of anti-expansion campaign group HACAN, agreed: "A few people in Ealing may benefit a little but more people across Hounslow will definitely suffer."
NATS consultation on airspace use ended last week but Hounslow council claim local residents affected by the changes were not included in the process.
Mr Stewart added: "NATS were well-meaning but seem to have been fairly clueless about who to consult."