The distance from both is much the same so it depends on which one is most convenient for you.
Heathrow is slightly closer but there are good transport links to/from both of them.
Gatwick is closer.
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.
The closest main airport to Oxford is Heathrow. Luton, Gatwick and Stansted are all much further and roughly the same distance from Oxford.
Heathrow is the closest to Central London London to Heathrow According the AA Route Planner (GB Edition) the distance is 14.5 miles, this will take about 0 hours and 40minutes to drive. London to Gatwick According the AA Route Planner (GB Edition) the distance is 28.6 miles, this will take about 1 hours and 1 minutes to drive.
London Heathrow
Birmingham international airport is 122 miles from CardiffLondon Heathrow Airport, is 137 miles from Cardiff.Birmingham is closest by 15 miles
There are several very nice Travelodges close to the Gatwick airport. If a person wishes to stay closer to downtown then they might try the Arora Hotel Gatwick, the hotel features a pool, room service and large rooms with spectacular views.
According to both an on-line taxi fare calculator (http:/www.worldtaximeter.com/london), and a on-line journey planner (http:/maps.google.co.uk), London City Airport (only 12 miles away) would be the closest airport to St Pancras. The only potential problem is that London City is a relatively small airport, only servicing a limited number of locations, so may not be of any use to you, depending on where you're coming from. If this is the case, the nearest of the major London airports to St Pancras would be London Heathrow Airport (15 miles to St Pancras), compared to Luton Airport (25 miles), Gatwick Airport (32 miles) or Stansted Airport (38 miles).
The nearest Hilton hotel closest to Heathrow airport depends on which terminal you are flying from as there are two Hilton hotels in the same vicinity. However one is closer to Terminal 4 and the other is close to Terminal 5 which is a distance away from Terminal 1-4.
Heathrow Airport is the largest and busiest, and one of the busiest airports in the world. It is also the world's busiest airport by the number of international passengers. It is located in the western suburbs of London within the city boundaries and is connected directly to the London Underground (Piccadilly Line). There is also a Heathrow Express - a fast train that goes straight to Paddington station. Gatwick Airport is the second largest - it's also the busiest single-runway airport in the world. It is located directly south of London in Sussex near the large town of Crawley, but is closer to the minor town of Horley. It is located on the main line from London to Brighton and is connected to the city by the Gatwick Express. Stansted Airport is located northeast of London near the town of Bishop's Stortford, Essex. It is connected to central London by the Stansted Express. Luton Airport is located northwest of London in the town of Luton, Bedfordshire. The nearby railway station is connected to London by Thameslink trains. City Airport is located in the eastern suburbs of London. It is connected to the Docklands Light Railway and serves mainly business flights.
Luton is a town about 30 miles north of London. It is also home to London Luton Airport. Heathrow is a larger and closer airport but frequently domestic travel and sometimes international travel is cheaper when done through Luton.