Heathrow Airport is not connected to the mainline national rail network.
To make a connection to the national rail network you need to take
advantage of the
Railair coach services from
the airport.
Services running from the airport are the London underground Tube
network on the Piccadilly line, the Heathrow Express and the TFL Rail service into Paddington.
London Underground Tube

Heathrow connects into central London via the Piccadilly line. The line
was first opened on the 16th December 1977 with terminal 4 being
connected to the line on 12th April 1986 and terminal 5 opened in 2008.
The stops
are below Terminals 2 and 3 and also stops at terminal 4. There is an
additional stop within the airport perimeter but not connected to any of
the terminals at Hatton Cross. This station is very convenient for the
Jurys Heathrow
Hotel being a very short walk from the hotel. Hatton Cross is
located on the Southern Perimeter Road on the terminal 4 side of the
airport. You can connect to the tube via any of the terminals. All
terminals are well sign posted and you will be looking for the following
symbol on each sign. Note that very few
Heathrow Hotels are
within walking distance to a tube station making the Jurys very
convenient if this is a priority.

The underground is a separate facility to the Heathrow express and
Connect services into Paddington so do not use their entrance thinking
it will connect you with the tube network. From Terminal 2 you
will come to the underground entrance before the Express and Connect
entrance, from terminal 3 it will be the other way round.
From terminals 2 and 3 the underground entrance includes a small internet cafe,
telephone booths and currency exchange as well as extensive ticketing
and information services.
See London Transport Guide for
fares
view tube map
Monday to Saturday:
The last tube train leaves at 23.40 to Cockfosters via central London.
last train to Hammersmith leaves at 00.04 and at 00.22 for Acton Town.
Sunday:
The last tube train leaves at 23.30 to Cockfosters via central London
and 23.55 for Northfields.
After these hours you can take the N9 night bus service which goes into
central London and onto Aldwych from the Central Bus Station stand 30.
The N9 runs every 30 minutes. If you d rather take a taxi the nearest
rank is the one outside terminal 2.
From any of the terminals when making your way to the underground
you will look for this sign:
