http://www.heathrow-airport-guide.co.uk/flight-arrivals.html All Aer Lingus flights are terminal 1
Iberia operates at T3 at Heathrow.
Pakistan International Airlines (PIA) flights to Islamabad typically depart from Terminal 4 at Heathrow Airport. However, it's always advisable to check your flight details or the airline's official website for the most up-to-date information, as terminal assignments can change.
Terminal 2.
Terminal 1
British Airways operates all flights from North Terminal at Gatwick.
It leaves 5:35pm from New York to Seattle. Also it is terminal 4 at the airport.
Sure you can but leave sufficient time to pass through immigration [ as a tourist ], going into NYC and then returning to the terminal to get your connecting flight.
NZ002 leaves Auckland at 22:30 and arrives in London Heathrow at 11.00am (1 day later due to crossing the international date line).
No, you cannot leave Heathrow Airport during a layover without a visa.
Flight BA95 to Montreal leaves London Heathrow at 17:40 arriving in Montreal at 19:45, a direct flight taking around 7½ hours and costing around £300 ($570).
Yes - you will need to show it on arrival in Prague and to leave Northern Ireland.