From the West End, take the Piccadilly line; estimate around 50 minutes to Terminal 5
https://stephenizyr329.raidersfanteamshop.com/national-rail-to-heathrow-routes-transfers-and-tickets-explained
From the West End, take the Piccadilly line; estimate around 50 minutes to Terminal 5, and consider traveling off-peak for a more comfortable journey.