yes
No. It would be easiest to change planes at London Heathrow.
There are no direct flights between the two places - you would have to change in London.
All of them.
No
There are no direct flights between Glasgow and Los Angeles. You would have to change, either in London or a US hub.
In my most recent flight (Mar 2011) from London to LA we flew north over Scotland.
Yes it does if u ask and they will answer it
because incoming flights take the direct route and the air corridor goes up over scotland to avoid congestion
It depends from where to in Scotland you are flying to. Flights from London to Edinburgh and flights from London to Glasgow usually last about 1 hour with good flying conditions, however flights from London to Aberdeen (or Inverness) take about 10-15 minutes longer due to the larger distance covered.
They would fly over Ireland.
From London there are three major train services running to Scotland from London, East Coast, Virgin and Overnight Sleeper Services. These companies predict the journey to Scotland (depending on the destination) to be four and a half to five hours.
One can find cheap flights to Scotland from a number of sources including but not limited to Travelocity, Expedia, Orbitz and many online retailer's specializing in air fair.