Eastbound - Platform 1
Westbound - Platform 2
| Heathrow Terminal 4 | 3:00 mins |
| Heathrow Terminal 5 | 7:30 mins |
| Rayners Lane | 11:29 mins |
| Heathrow Terminal 4 | 14:29 mins |
| Heathrow Terminal 5 | 19:29 mins |
| Uxbridge | 22:29 mins |
| Heathrow Terminal 4 | 25:29 mins |
| Heathrow Terminal 4 | 3:00 mins |
| Heathrow Terminal 5 | 7:30 mins |
| Rayners Lane | 11:29 mins |
| Heathrow Terminal 4 | 14:29 mins |
| Heathrow Terminal 5 | 19:29 mins |
| Uxbridge | 22:29 mins |
| Heathrow Terminal 4 | 25:29 mins |