Arriving in Heathrow by noon and would like to go into Piccadilly on train.
Would like to shop and eat there and return to Heathrow that night. How much time does the train take? How late does it run in order to return to Heathrow?
Or is Paddington the logical stop?
Take the Piccadilly line to Piccadilly Circus- journey time 48 minutes.
The last train back is at 23:10 (11:10 pm) Sunday to Thursday.
On Friday and Saturday nights the trains run every 10 minutes all night.
Allow an hour to cover the fact that it might not be sitting waiting for you, and the 48 to 50 minute journey time. The Piccadilly line runs to just after 2300 most days, and is all night Friday and Saturday
