Westbound - Platform 1
| Heathrow Terminal 5 | 30 secs |
| Heathrow Terminal 5 | 2:30 mins |
| Heathrow Terminal 4 | 4:00 mins |
| Heathrow Terminal 5 | 6:00 mins |
| Heathrow Terminal 5 | 20:00 mins |
| Heathrow Terminal 4 | 22:00 mins |
Eastbound - Platform 2
| Cockfosters | 2:00 mins |
| Cockfosters | 5:00 mins |
| Cockfosters | 12:00 mins |