Piccadilly line
Color maps usually show the Piccadilly line as a blue line.
The Piccadilly line runs from Cockfosters in the east to Acton Town in the west, where it divides and continues west to Heathrow and Uxbridge.
The Piccadilly line is underground between Bounds Green and Earl's Court and between Hounslow West and Heathrow.
Between South Kensington and Ealing Common, London Underground services on the Piccadilly line and on the District line serve the same route, sharing platforms at Acton Town and Ealing Common and having adjacent platforms at Barons Court, Hammersmith, Turnham Green, and Acton Town, but services on the District line serve more stations.
Between Rayners Lane and Uxbridge, London Underground services on the Uxbridge branch of the Piccadilly line and on the Uxbridge branch of the Metropolitan line share platforms.
Starting in the east, heading west, station by station:
1. Cockfosters.
2. Oakwood.
3. Southgate.
4. Arnos Grove.
5. Bounds Green.
6. Wood Green.
7. Turnpike Lane.
8. Manor House.
9. Finsbury Park. Change for London Underground services on the Victoria line. Change for National Rail services on the lines from London King's Cross and Moorgate.
10. Arsenal.
11. Holloway Road.
12. Caledonian Road.
13. King's Cross Saint Pancras. Change for London Underground services on the Circle line, on the Hammersmith and City line, on the Metropolitan line, on the Bank branch of the Northern line, and on the Victoria line. Change for Thameslink services (from London Saint Pancras International). Change for National Rail services (from London King's Cross and London Saint Pancras International).
14. Russell Square.
15. Holborn. Change for London Underground services on the Central line.
16. Covent Garden.
17. Leicester Square. Change for London Underground services on the Charing Cross branch of the Northern line.
18. Piccadilly Circus. Change for London Underground services on the Bakerloo line.
19. Green Park. Change for London Underground services on the Jubilee line and on the Victoria line.
20. Hyde Park Corner.
21. Knightsbridge.
22. South Kensington. Change for London Underground services on the Circle line and on the Upminster branch of the District line.
23. Gloucester Road. Change for London Underground services on the Circle line and on the Upminster branch of the District line.
24. Earl's Court. Change for London Underground services on the District line.
25. Barons Court. Change for London Underground services on the Ealing Broadway and Richmond branches of the District line.
26. Hammersmith. Change for London Underground services on the Ealing Broadway and Richmond branches of the District line. Change for London Underground services (from the other Hammersmith station, which is a short walk away) on the Circle line and on the Hammersmith and City line.
27. Turnham Green. London Underground services on the Piccadilly line only serve this station late at night and early in the morning. Change for London Underground services on the Ealing Broadway and Richmond branches of the District line.
28. Acton Town. Change for London Underground services on the Ealing Broadway branch of the District line.
At Acton Town, the Piccadilly line divides. The Uxbridge branch continues to the northwest. The Heathrow branches continue to the southwest.
Uxbridge branch
Continuing west, station by station:
28. Acton Town. Change for London Underground services on the Ealing Broadway branch of the District line and on the Heathrow branches of the Piccadilly line.
29u. Ealing Common. Change for London Underground services on the Ealing Broadway branch of the District line.
30u. North Ealing.
31u. Park Royal.
32u. Alperton.
33u. Sudbury Town.
34u. Sudbury Hill. Change for National Rail services (from Sudbury Hill Harrow, which is a short walk away) on the line between High Wycombe and London Marylebone.
35u. South Harrow.
36u. Rayners Lane. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
37u. Eastcote. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
38u. Ruislip Manor. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
39u. Ruislip. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
40u. Ickenham. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
41u. Hillingdon. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
42u. Uxbridge. Change for London Underground services on the Uxbridge branch of the Metropolitan line.
Heathrow branches
Continuing west, station by station:
28. Acton Town. Change for London Underground services on the Ealing Broadway branch of the District line and on the Uxbridge branch of the Piccadilly line.
29h. South Ealing.
30h. Northfields.
31h. Boston Manor.
32h. Osterley.
33h. Hounslow East.
34h. Hounslow Central.
35h. Hounslow West.
36h. Hatton Cross.
At Hatton Cross, the Heathrow branches of the Piccadilly line divide. The Heathrow Terminal 4 loop goes to Heathrow Terminal 4 and Heathrow Terminals 2 and 3. The Heathrow Terminal 5 branch goes to Heathrow Terminals 2 and 3 and Heathrow Terminal 5.
Heathrow Terminal 4 loop
London Underground services on the Heathrow Terminal 4 loop of the Piccadilly line only run in one direction.
Continuing west, before looping back, station by station:
36h. Hatton Cross. Change for London Underground services on the Heathrow Terminal 5 branch of the Piccadilly line.
37h. Heathrow Terminal 4. Change for TfL Rail services (from Heathrow Terminal 4 National Rail station).
38h. Heathrow Terminals 2 and 3. Change for TfL Rail services (from Heathrow Terminals 2 and 3 National Rail station). Change for Heathrow Express services (from Heathrow Terminals 2 and 3 National Rail station) on the line from London Paddington.
36h. Hatton Cross. Change for London Underground services on the Heathrow Terminal 4 loop and on the Heathrow Terminal 5 branch of the Piccadilly line.
Heathrow Terminal 5 branch
Continuing west, station by station:
36h. Hatton Cross. Change for London Underground services on the Heathrow Terminal 4 loop of the Piccadilly line.
38h. Heathrow Terminals 2 and 3. Change for TfL Rail services (from Heathrow Terminals 2 and 3 National Rail station). Change for Heathrow Express services (from Heathrow Terminals 2 and 3 National Rail station) on the line from London Paddington.
39h. Heathrow Terminal 5. Change for Heathrow Express services on the line from London Paddington.