The Piccadilly line is a deep-level London Underground line running from the north to the west of London. It has two branches, which split at Acton Town, and serves 53 stations. The line serves Heathrow Airport, and some of its stations are near tourist attractions such as Piccadilly Circus and Buckingham Palace. The District and Metropolitan lines share some sections of track with the Piccadilly line. Printed in dark blue on the Tube map, it is the sixth-busiest line on the Underground network, with nearly 218 million passenger journeys in 2019.
Paddington, also known as London Paddington, is a London railway station and London Underground station complex, located on Praed Street in the Paddington area. The site has been the London terminus of services provided by the Great Western Railway and its successors since 1838. Much of the main line station dates from 1854 and was designed by Isambard Kingdom Brunel. As of the 2022–23 Office of Rail & Road Statistics, it is the second busiest station in the United Kingdom, after London Liverpool Street, with 59.2 million entries and exits.
Heathrow Express is a high-frequency airport rail link operating between London Heathrow Airport and London Paddington. Opened in 1998, trains run non-stop, with a journey time of 15 minutes. The service is operated jointly by Great Western Railway and Heathrow Express Operating Company, a wholly owned subsidiary of Heathrow Airport Holdings. Around 16,000 passengers use the service each day.
West Ealing railway station is on the Great Western Main Line in Ealing, situated in west London. It is 6 miles 46 chains (10.6 km) down the line from London Paddington and is situated between Ealing Broadway to the east and Hanwell to the west. Its three-letter station code is WEA.
Ealing Broadway is a major single-level interchange station located in Ealing, in the London Borough of Ealing, West London for London Underground services and also Elizabeth line services on the National Rail Great Western Main Line.
Heathrow Terminals 2 & 3 is a London Underground station at Heathrow Airport on the Heathrow branch of the Piccadilly line, which serves Heathrow Terminal 2 and Terminal 3. The station also served Heathrow Terminal 1 until its closure in January 2016. The station is situated in Travelcard Zone 6, along with the nearby Heathrow Terminals 2 & 3 railway station served by Heathrow Express and Elizabeth line services.
Heathrow Terminal 4 is a London Underground station at Heathrow Airport on the Heathrow branch of the Piccadilly line. The station is situated in Travelcard Zone 6.
Hatton Cross is a combined London Underground station and bus station. It is located on the Heathrow branch of the Piccadilly line. It is in Travelcard Zones 5 and 6 and stands between the Great South West Road (A30) and the Heathrow Airport Southern Perimeter Road. The station serves a large area including Feltham to the south and Bedfont to the west. The station was named after the crossroads of the Great South West Road and Hatton Road.
Hounslow West is a London Underground station in locality of Hounslow West in Hounslow within the London Borough of Hounslow, West London. The station is on the Heathrow Terminals 2 & 3 branch of the Piccadilly line, between Hatton Cross and Hounslow Central stations and is in Travelcard Zone 5. The station is located on Bath Road, close to the Great West Road (A4). The station has an island platform, with step-free access via a stairlift for manual wheelchair users only.
Reading railway station is a major transport hub in the town of Reading in Berkshire, England, it is 36 miles (58 km) west of London Paddington. It is sited on the northern edge of the town centre, near to the main retail and commercial areas and the River Thames. It is the busiest station in Berkshire, and the third busiest in South East England.
Hayes & Harlington is a railway station serving the west London districts Hayes and Harlington in the London Borough of Hillingdon. It is 10 miles 71 chains down the line from London Paddington and is situated between Southall and West Drayton.
Heathrow Terminals 2 & 3 railway station serves Terminal 2 and Terminal 3 at London Heathrow Airport.
Heathrow Terminal 4 is a railway station at Heathrow Terminal 4 served by the Elizabeth line.
Staines railway station is on the Waterloo to Reading line and is the junction station for the diverging Windsor line, in southern England to the west of London. It is 19 miles 2 chains (30.6 km) down the line from London Waterloo. It serves the town of Staines-upon-Thames in Surrey, England.
Heathrow Airtrack was a proposed railway link in the United Kingdom which would link Heathrow Airport in west London to London Waterloo railway station in Central London.
Heathrow Terminal 5 is an airport terminal at Heathrow Airport, the main airport serving London. Opened in 2008, the main building in the complex is the largest free-standing structure in the United Kingdom. Until 2012, the terminal was used solely by British Airways. It now is used as one of the three global hubs of IAG, served by British Airways and Iberia.
Heathrow Terminal 3 is an airport terminal at Heathrow Airport, serving London, the capital city of the United Kingdom. Terminal 3 is currently used as one of the main global hubs of the International Airlines Group members British Airways and Iberia since 12 July 2022. It is also used by the majority of members of the Oneworld and a few SkyTeam alliances along with several long-haul non-affiliated airlines. It is also the base for Virgin Atlantic.
Heathrow Central bus station is a large bus station that serves terminals 2 and 3 of Heathrow Airport, in London, England. It provides urban bus and long-distance coach services to destinations in London and to regional destinations across Britain. It is the UK's busiest bus and coach station with over 1,600 services each day to over 1,000 destinations. An estimated 13% of air passengers using Heathrow Airport use bus and coach services from Heathrow Central bus station.
The Elizabeth line is a high-frequency hybrid urban–suburban rail service in London and its suburbs. It runs services on dedicated infrastructure in central London from the Great Western Main Line west of Paddington station to Abbey Wood and via Whitechapel to the Great Eastern Main Line near Stratford; along the Great Western Main Line to Reading and Heathrow Airport in the west; and along the Great Eastern Main Line to Shenfield in the east. The service is named after Queen Elizabeth II, who officially opened the line on 17 May 2022 during her Platinum Jubilee year; passenger services started on 24 May 2022. Elizabeth line services are operated by MTR Elizabeth line under a concession from Transport for London (TfL). Despite being named under the same system as London Underground lines, and having sections which are underground, the Elizabeth line is not classified as a London Underground line.
Over the years, a number of transport proposals have been made to improve public access to Heathrow Airport, near London in the United Kingdom.
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0.382 million [2] 
1.080 million [2] 
London transportportal 
