| Number | Service (From/To) | General Details | Operator | | 81 | Hounslow to Slough | Only this direction, Mon to Fri (?) Sat (every 12 mins) Sun (every 15 mins) | Metroline |
| Via Hounslow West-Cranford (Heathrow Ramada Jarvis Hotel) ..... more |
| | Slough to Hounslow | Only this direction, Mon to Fri (?) Sat (every 12 mins) Sun (every 15 mins) | " |
| Via Langley-Brands Hill-Colnbrook-Longford-Heathrow Airport (Thistle Hotel) ..... more |
| 105 | Greenford to Heathrow Airport | Mon to Sat (every 12 mins) Sun (every 15 mins) | London United |
| Via Greenford (Ruislip Road)-London (Dormers Wells)-Southall ..... more |
| 111 | Heathrow Airport to Kingston Upon Thames | Mon to Fri (every 8 mins) Sat (every 9 mins) Sun (every 12 mins) | " |
| Via Sipson-Harlington-Heathrow Airport Renaissance Hotel ..... more |
| | London (Hampton Hill Hampton School) to Heathrow Airport | Only this direction, Mon to Fri (1 trip) | " |
| Via London (Hampton Hill)-Hanworth-Whitton-Hounslow-Bus Station ..... more |
| 222 | Hounslow to Uxbridge | Mon to Fri (?) Sat (every 10 mins) Sun (every 12 mins) | Metroline |
| Via Hounslow West-Cranford (Heathrow Ramada Jarvis Hotel) ..... more |
| 285 | Kingston Upon Thames to Heathrow Airport | Only this direction, Mon to Fri (96 trips) Sat (every 13 mins) Sun (every 13 mins) | London United |
| Via Kingston Upon Thames-Hampton Wick-London (Kingston Lane) ..... more |
| 423 | Hounslow to Heathrow Airport (Terminal 5) | Only this direction, Mon to Fri (58 trips) Sat (every 19 mins) Sun (every 29 mins) | " |
| Via Hounslow West-Harlington-Hatton-Hatton Cross-Heathrow Airport Jurys Inn ..... more |
| 555 | Hersham to Heathrow Airport | Only this direction, Mon to Sun (2 trips) | Hallmark Connections |
| Via Hersham (Rydens School)-Walton on Thames-Rail Station ..... more |
| | Sunbury to Heathrow Airport | Only this direction, Mon to Sun (3 trips) | " |
| Via Sunbury (Tesco)-Ashford Common-Ashford-Hospital-Stanwell ..... more |
| | Walton on Thames to Heathrow Airport | Only this direction, Mon to Sun (4 trips) | " |
| Via Lower Halliford-Shepperton-Rail Station-Upper Halliford ..... more |
| | Whiteley to Heathrow Airport | Only this direction, Mon to Fri (11 trips) Sat (every 60 mins) Sun (every 60 mins) | " |
| Via Hersham-Rydens School-Walton on Thames-Rail Station-Lower Halliford ..... more |
| H98 | Hayes End to Hounslow | Mon to Sat (every 10 mins) Sun (every 15 mins) | London United |
| Via Wood End Green-Wood End-Hayes (Hayes and Harlington Rail Station) ..... more |
| N 9 | Aldwych to Heathrow Airport (Terminal 5) | Evenings only, one way, Mon to Sat (17 trips) Sun (19 trips) | " |
| Via Soho-London (St James)-London (Charing Cross)-London (Trafalgar Square) ..... more |
| | Heathrow Airport (Terminal 5) to Aldwych | Evenings only, one way, Mon to Sun (16 trips) | " |
| Via Heathrow Airport (Central Bus Station)-Sipson-Harlington ..... more |
| | Hounslow to Heathrow Airport (Terminal 5) | Evenings only, one way, TueWedThuFriSat (2 trips) Sun (2 trips) | " |
| Via Hounslow-Hounslow West-Cranford-Heathrow Ramada Jarvis Hotel ..... more |
| N140 | Harrow Weald to Heathrow Airport | Only this direction, Mon to Sun (13 trips) | Metroline |
| Via Wealdstone-Harrow (Harrow and Wealdstone Rail Station) ..... more |
| X140 | Harrow to Heathrow Airport | Mon to Fri (87 trips) Sat (every 12 mins) Sun (every 15 mins) | " |
| Via South Harrow-Northolt-Yeading-Wood End-Hayes (Hayes and Harlington Rail Station) ..... more |