Question : What day in the next four weeks has the best fares?
Answer : December 13th offers bookings (as of December 5th) that are 19% below the average price for this route. Saving on flight costs means you'll have more cash in your pocket for the trip.
Question : How many days should you spend in Sydney if you're flying in from Philadelphia?
Answer : Of course you're not most people, but if you were, you'd stay roughly 16 days.
Question : Would you be willing to change your travel days if it saved you money?
Answer : The lowest-cost day to fly in December is Wednesday. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.
Question : How often are prices changing for this route?
Answer : Prices for PHL to SYD do fluctuate a lot more than most. Remember, you can save by booking further in advance.