If you mean to London City Airport, it's about 30 miles.
1 h 7 min (24.6 mi) across the busiest area
About 35 miles
It is 105 miles from Birmingham International Airport (BHX) to London Heathrow (LHR).
About 40 miles
It is 26 miles from Leyton, in North-East London, to Heathrow Airport.
Heathrow Airport and Wimbledon are about 10 miles away from each other.
Leicester is about 86 miles (137 kilometers) north of London Heathrow Airport.
It's 50 Mins on Lingus to Heathrow, around 65-70 mins to London City using Air France
216 miles London Heathrow Airport (LHR) to Paris Charles de Gaulle Airport (CDG)
The flight distance from London Heathrow Airport to Beijing, China is about 5,080 miles.
This would be London City Airport, which is located in the eastern suburbs of the city not far away from The Docklands (the new skyscraper district). However, this airport is restricted to mainly business and charter flights. So you're more likely to end up at Heathrow Airport, which is the second closest. Don't be too worried about distance though, as all airports are well connected to London. I'd rather take flights to Stansted Airport (which is quieter than Heathrow but much further away) than Heathrow (which is very busy).
yes, much bigger. heathrow has 5 terminals spread across 1227 hectares (12270000 m²) and Glasgow has 2 terminals and about 4-5 times smaller than heathrow. also heathrow is used as hubs for many airlines.
Bristol Airport is about 95 miles from London.