To save up to 38% on this flight, we recommend booking at least 51 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Florence to Heathrow from $813 1-2 weeks out and tickets from $886 for flights departing within the next 72 hours.
Flights from Florence to Heathrow lean towards being more expensive in June. Prices are generally better when you fly from Florence to Heathrow in February, with the cheapest ticket starting at $394.