Join Date: Oct 2006
Location: London, UK
Programs: BA Gold, VS Silver, SQ Silver, IHG Plat Amb, Hilton Gold, Marriott Plat, Accor Silver, Radisson Prem
Posts: 16,872
In Club Europe, afternoon tea is served on Express, Band 1 and Band 2 flights for flights departing between 14:00 and 16:59.
In Club World and First, I don't have the exact times, but afternoon tea is typically served as the second meal on East Coast US and Canada flights arriving before roughly 17:00 local time.