Avoid last-minute stress by aiming to arrive at Heathrow two to three hours before departure; select the fastest route

https://marioabpg472.image-perth.org/getting-to-heathrow-by-tube-piccadilly-line-tips-times-and-luggage-advice-3

Avoid last-minute stress by aiming to arrive at Heathrow two to three hours before departure; select the fastest route available for your time window.