Originally Posted by
MonAmQB
Piccadilly line gets my vote. Heathrow Express is a scam.
I actually like the Heathrow Connect. Stops at the same track as the Express at T3, goes to Paddington, leaves every 30 minutes, takes just under 30 minutes, and only costs about £10 each way instead of 2-2.5x that for the Heathrow Express. Your son can buy the ticket on the train for no extra fee. Also, on Sundays it makes fewer stops so it's only like 20 min.