http://www.heathrow-airport-guide.co.uk/flight-arrivals.html
All Aer Lingus flights are terminal 1
Iberia operates at T3 at Heathrow.
Delta uses Heathrow terminal T4.
Yes, there are three stations: Heathrow Terminal's 1,2 &3; Heathrow Terminal 4 and Heathrow Terminal 5. They are all situated on the Piccadilly Line.
Heathrow Terminal 5 is on M 25 motorway.
Terminal 5.
About 20 minutes.
There are about 30 miles from Whitechapel to Heathrow terminal 3.
Terminal 3
Terminal 2 is a new terminal in Dublin Airport and will be used by Aerlingus, Delta, Continental, American Airlines, US Airways & Etihad Airlines.
American Airlines is located at Terminal 3 at Heathrow Airport.
British Airways is located at Terminal 5 at Heathrow Airport.
British Airways operates from Terminal 5 at Heathrow Airport.