Terminal 5 has its own tube station on the Piccadilly Line. From Piccadilly Circus, you can reach the terminal in around 50 minutes, with tubes running from around 5am to midnight (outside of those times, there N9 bus is the best option on public transport). The line runs through a number of central London locations before heading to Heathrow, including Kings Cross, Covent Garden, Hyde Park Corner and Earls Court. Trains running on this line have space for luggage. Should you wish, you can use one of the many self-service ticket machines in the terminal. Tickets cost £4.50 in cash, or £2.40 off peak on a pre-paid Oyster card. You can buy and load Oyster cards with money at any tube station, or online, and as they can be used on buses too they are worth getting for anyone spending any time in London, even if you’re only making a couple of trips on public transport.
From central London, the Heathrow Express is the fastest rail route. It takes just fifteen minutes, and provides a comfortable, luxury service. It is significantly more expensive than other public transport, with advance adult single tickets costing from £16.50 if bought in advance, up to £23 if bought on board. However, the advantage of the service is frequent trains (they leave Paddington every fifteen minutes), television screens and comfortable, airline style seats. Terminal 5 has its own Heathrow Express station, so you won’t have to worry about transfers within the airport.
There is another, cheaper rail option. The Heathrow Connect service, runs from Paddington and calls at Ealing Broadway, West Ealing, Hanwell, Southall, Hayes and Harlington, Heathrow Central and Heathrow Terminal 4. It’s perfect for those coming from west London locations who don’t want to pay Heathrow Express prices. It doesn’t have its own Terminal 5 stop, so Terminal 5 passengers should get off at Heathrow Central and use the shuttle bus to transfer. An adult single costs £7.90.
For train timetables, check the National Rail website.
To find out more about tube services, go to Transport for London.