The best pricing can be found in the month of August. Prices to Key West from Melbourne average $452. You can even find prices in August for less than $452, as users have found deals to Key West from as low as $217. The month of December appears to be one of the more expensive times to travel to Key West from Melbourne. Flying in the targeted month can save you up to 38%.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Melbourne to Key West as you normally would.