Transport from airports
The fastest way to travel from Heathrow Airport to London’s Paddington Station is via the Heathrow Express. It takes only 15 minutes from Heathrow Central Terminal 1,2 & 3, and about 19 minutes from Terminal 5. It runs at intervals of 15 minutes.
It cost £21.50 if bought online or via the ticket machines and £26.50 if bought on-board.
A cheaper alternative is to take the tube (Piccadilly line) which runs at interval of less than 10 minutes. The journey time to Piccadilly Circus takes about 50 minutes. A single paper ticket from Heathrow (Zone 6) into Central London (Zone 1) costs £5.70. Buy the Travelcard or Oyster pay-as-you-go card for cheaper fares. The first train from Heathrow Airport T1,2,3 is at 05.12 (Sun 05.56) and last train at 23.45 (Sun 23.28)
National Express operates services from Heathrow Airport to London Victoria, and many other parts of UK. The buses run from Heathrow Airport Central Bus Station which is located between Terminal 1, 2 and 3. The journey to Victoria coach station takes about 50 mins and cost £6. Check out the National Express website for other destinations in London and other parts of UK.
During the night the N9 bus connects Heathrow with central London. For more information visit the Heathrow Airport website.
Transportation in London
If you are staying in London for a few days, getting a Pay as you go Oyster card is cheaper and more convenient than buying single trip paper tickets. Pay as you go fares are cheaper than cash and if you make many journeys in a day, the cost of your travel is automatically capped. You must touch in and out on every journey (touch in only on buses and trams) using the same contactless payment card to benefit from capping.
You will need to pay £5 deposit when you get an Oyster card, which is refundable.
Use the official Transport for London website to plan your journey using the tube or the London Overground
Download the London Tube map here : London Tube Map