欧洲之星: paris to london = 2.75 hours
departure: Paris [Gare du Nord]
arrival: London [King's Cross St. Pancras]
London Underground [Metro]: King's Cross St. Pancras to Heathrow [International Airport] = approximate GBP 6.00, the journey takes about 1 hour by tube [Metro]
http://www.tfl.gov.uk/
上海东航到伦敦 = Heathrow Airport / Gatwick Airport
到LYON的飞机 = normally, it would be: London City Airport / London Stansted Airport
*London Stansted = located north of London (outside the Greater London), approximate 1.5 hour from London by bus / train
*London City Airport = located in the city of London, it is 30 minutes from King's Cross St. Pancras
*Heathrow Airport = located within Greater London, west of London Zone 6
*Gatwick Airport = located south of London (outside the Greater London)