How long From cockfosters to Heathrow on tube?

The journey from Cockfosters to Heathrow on the Tube typically takes about 1 hour and 15 minutes. You would need to take the Piccadilly Line from Cockfosters and transfer at either King's Cross St. Pancras or Hammersmith, depending on your terminal at Heathrow. Check for any service changes or delays that may affect travel times.