Cheap flights from Philadelphia to Sydney from $601
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Sydney departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Philadelphia to Sydney
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Sydney?
In general, September is the cheapest month to fly from Philadelphia to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,147. If you are unable to visit Sydney during the month of September, then departing from Philadelphia during the month February is also very affordable. Most momondo users find prices during this month for around $1,157.
What is the cheapest day to depart on your flight to Sydney?
The cheapest day to depart from Philadelphia to Sydney is on a Sunday when prices can be found for as low as $1,373. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,659.
What is the cheapest time of day to depart on your flight to Sydney?
According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Philadelphia to Sydney in the morning for as low as $1,449. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $2,063. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Philadelphia for as low as $1,068 on momondo.
Can stopping save me money on Philadelphia to Sydney flights?
You could potentially save up to 30% on your flight if you consider stops on a Philadelphia to Sydney flight.
How have Philadelphia to Sydney flight prices changed over time?
As of July 2025, prices for Philadelphia to Sydney flights are approximately 17% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Philadelphia to Sydney Kingsford Smith?
Fiji Airways, Qantas Airways, and Qatar Airways are the most popular carriers operating from Philadelphia to Sydney Kingsford Smith
What airlines fly to Sydney?
United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to Sydney from Philadelphia according to our data. United Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.
When to book flights from Philadelphia to Sydney
Cheap Philadelphia to Sydney (PHL to SYD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Sydney
How far is Philadelphia to Sydney Kingsford Smith by plane?
Philadelphia and Sydney Kingsford Smith are 9863.8 mi apart from one another. Flights usually cover this in 22h 22m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?
Prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?
As of July 2025, there are 7 operators available to choose from for flights from Philadelphia Airport to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Philadelphia Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Philadelphia to Sydney?
momondo data reveals that the most frequently booked airline on the route from Philadelphia to Sydney is United Airlines, representing 27% of all bookings. The subsequent popular airlines are American Airlines at 22%, Qantas Airways at 16%, and Delta at 11%.
Best airlines flying from Philadelphia to Sydney
Compare and see reviews for airlines that fly from Philadelphia to Sydney with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $834 | Free Cancellation | Rating 8.0 7,962 reviews | |||
| PriceFrom $860 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom $945 | Free Cancellation | Rating 7.1 9,680 reviews | |||
| PriceFrom $1,220 | Free Cancellation | Rating 8.0 494 reviews | |||
| PriceFrom $1,288 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,294 | Free Cancellation | Rating 7.5 873 reviews | |||
| PriceFrom $1,390 | Free Cancellation | Rating 8.0 201 reviews |
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Philadelphia to Sydney?
Finding the right flight to Sydney from Philadelphia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.
Can I find flights from Philadelphia to Sydney with flexible booking policies on momondo?
Yes. All flights to Sydney from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Philadelphia to Sydney?
Once you have performed a search for Philadelphia to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Philadelphia to Sydney right now. Can momondo alert me if prices change?
Price alerts on flights to Sydney from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.