There are 4 modes of transportation available when travelling from Heathrow Airport (LHR) to the city centre of London; taxi, train, underground and bus. Taking a Heathrow airport taxi is always the most convenient option, but it's also fairly costly. Taxi rides to the downtown area of London take approximately 45 minutes. The fastest route from Heathrow airport to the city centre is by train. The Heathrow Express train takes around 15 minutes to reach Paddington Station in London. A cheaper alternative to the train is the London Underground, with a journey time of around 45 minutes. The fourth and final option is taking either the National Express or TfL local bus, which takes around 50 minutes. Welcome Pickups offers meet and greet services and a friendly introduction to London at the same price as a regular taxi. Click here to see the cost.