Originally Posted by
Efrem
There is definitely no such thing as "not enough time." Check out all the posts in the UK forum here about people with eight hours, or whatever, between flights at Heathrow who want to see London. Is eight hours enough to really see London? Of course not. The posters know this. Does that mean they might as well hunker down at the airport until their flight to East Wherever is called? Heck no! This is a valid question, and hats off to them for wanting to do as much as possible within whatever their time constraints are.
I don't think that is quite a valid comparison. The opportunity cost for a someone transiting Heathrow to go into London is a couple of hours on the Tube and the cost of a tube fare that they could have spent at Heathrow.
The opportunity cost for someone flying from East Coast to London could be 12+ hours in coach and a $1000 fare + the tube travel and fare. I would want a longer time in London to justify the latter than the former.