There are no nonstop flights between Philadelphia International Airport (PHL) and Melbourne Airport (MEL), so all itineraries are connecting. One-stop options via Los Angeles (LAX) or San Francisco (SFO) are efficient for U.S.-based frequent flyers, while two-stop itineraries via East Coast → Asia can offer lower prices. Pros of connecting: greater fare variety, route flexibility, and potential to split tickets for savings. Cons: longer total travel time, missed-connection risk, and more luggage transfers. In October, prioritize connections with coordinated partner airlines to protect through-checked baggage and minimize re-check requirements. CTA: Compare one-stop vs two-stop routing to choose the ideal October itinerary based on price, total travel time, and preferred layover hub.