Peak Hours (06:30-09:30, 16:00-19:00):

Elizabeth Line: £12.80 from Central London to Heathrow. Journey time: 37 minutes from Paddington, 42 from Tottenham Court Road.

Off-Peak:

Elizabeth Line: £10.40. Piccadilly Line: £6.70 (same price all day). Journey time difference: Elizabeth Line saves 25 minutes but costs £6.10 more off-peak.

Pro tip: If you're staying near a Central Line station, take Central to Paddington then Elizabeth Line. Often faster than Piccadilly direct and avoids the Heathrow supplement until Paddington.