Not only that, but Heathrow I understand has heavy curfew / noise fines for arriving before 6am. Maybe to the tune of several tens of thousands of GBP. I figu

Not only that, but Heathrow I understand has heavy curfew / noise fines for arriving before 6am. Maybe to the tune of several tens of thousands of GBP. I figure you would wait to takeoff just to avoid those -- but maybe equally on the departure end they're paying for occupying a gate... https://www.heathrow.com/content/dam/heathrow/web/common/documents/company/doing-business-with-heathrow/flights-condition-of-use/consultation-documents/Conditions-of-Use-Consultation-Draft-2017.pdf https://www.heathrow.com/content/dam/heathrow/web/common/doc... "Schedule 5"