SYD - PHL

$604 Find Cheap Flights from Sydney to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Philadelphia departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Philadelphia, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Sydney to Philadelphia (SYD-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sydney to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Philadelphia

Fri, Sep 12 - Fri, Sep 19
Air Canada Logo
9:20 am - 2:38 pmSYD-PHL
43h 18m2 stops
Air Canada Logo
9:20 am - 7:20 amPHL-SYD
56h 00m2 stops
$938Air Canada
Find Deal
Fri, Sep 12 - Fri, Sep 19
Air Canada Logo
9:20 am - 2:38 pmSYD-PHL
43h 18m3 stops
Air Canada Logo
9:20 am - 7:20 amPHL-SYD
56h 00m2 stops
$944Air Canada
Find Deal
Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
10:20 am - 5:28 pmSYD-PHL
21h 08m1 stop
United Airlines Logo
6:33 pm - 6:55 amPHL-SYD
22h 22m1 stop
$979United Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
United Airlines Logo
10:20 am - 5:28 pmSYD-PHL
21h 08m1 stop
United Airlines Logo
5:15 pm - 7:00 amPHL-SYD
47h 45m2 stops
$1,028United Airlines
Find Deal
Fri, Sep 5 - Wed, Sep 17
American Airlines Logo
9:10 am - 5:42 pmSYD-PHL
22h 32m1 stop
American Airlines Logo
3:40 pm - 7:05 amPHL-SYD
25h 25m1 stop
$1,165American Airlines
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Thu, Oct 2 - Thu, Oct 9
American Airlines Logo
9:10 am - 5:42 pmSYD-PHL
22h 32m1 stop
American Airlines Logo
11:00 am - 6:55 amPHL-SYD
28h 55m1 stop
$1,172American Airlines
Find Deal
Fri, Sep 5 - Wed, Sep 17
 Logo
6:15 am - 9:13 pmSYD-PHL
28h 58m3 stops
 Logo
12:36 pm - 7:30 amPHL-SYD
28h 54m3 stops
$3,578
Find Deal
Tue, Oct 7 - Sun, Nov 16
 Logo
10:20 am - 9:38 pmSYD-PHL
50h 18m2 stops
 Logo
3:48 pm - 9:35 amPHL-SYD
25h 47m2 stops
$5,578
Find Deal
Fri, Sep 5 - Sat, Sep 20
Qantas Airways Logo
9:10 am - 5:42 pmSYD-PHL
22h 32m1 stop
Qantas Airways Logo
3:40 pm - 7:05 amPHL-SYD
25h 25m1 stop
$7,192Qantas Airways
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Sat, Sep 6 - Sat, Sep 20
Qantas Airways Logo
5:45 pm - 7:05 amSYD-PHL
27h 20m1 stop
Qantas Airways Logo
3:40 pm - 7:05 amPHL-SYD
25h 25m1 stop
$7,193Qantas Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Sydney to Philadelphia flights

Get data-powered insights and trends into flights from Sydney to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Sydney to Philadelphia?

What’s the cheapest day of the week to fly from Sydney to Philadelphia?

The average price of all round-trip flights from Sydney to Philadelphia clicked on KAYAK for each day over the last 12 months.

For Sydney to Philadelphia, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Philadelphia back to Sydney, the best deals are generally found on Sunday, with Thursday being the most expensive.

What is the cheapest month to fly from Sydney to Philadelphia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Philadelphia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sydney to Philadelphia is February, where tickets cost $784 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,965 and $1,897 respectively.

How far in advance should I book a flight from Sydney to Philadelphia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sydney to Philadelphia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sydney to Philadelphia, you should book around 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$604
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 44% lower on average.
Flight from Sydney to Philadelphia

When to book flights from Sydney to Philadelphia

Are your dates flexible? Find out the best times to travel from Sydney to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sydney to Philadelphia

  • What is the cheapest flight from Sydney to Philadelphia?

    In the last 3 days, the lowest price for a flight from Sydney to Philadelphia was $604 for a one-way ticket and $938 for a round-trip.

  • Do I need a passport to fly between Sydney and Philadelphia?

    Yes

  • Which aircraft models fly most regularly from Sydney to Philadelphia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sydney to Philadelphia?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Sydney and Philadelphia, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Sydney to Philadelphia, Qantas Airways or American Airlines?

    The two airlines most popular with KAYAK users for flights from Sydney to Philadelphia are Qantas Airways and American Airlines. With an average price for the route of $1,710 and an overall rating of 7.5, Qantas Airways is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,289 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Sydney to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sydney to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sydney to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Sydney is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sydney to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Sydney with another airline. Booking your flights between Sydney and PHL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Sydney to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sydney to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Qantas AirwaysOverall score based on 887 reviews
7.4Comfort
7.7Boarding
8.2Crew
7.2Entertainment
6.9Food
Airline reviews

Poor! This flight was delayed 14 hours. There was no assistance in helping customers find other routes to their destination, nor any other kind of support. It was a chaotic experience. I'm not likely to fly with AA going forward.

2.0 MediocreAnonymous, Jul 2025LAX - ORD
Read more Qantas Airways reviews

Poor! This flight was delayed 14 hours. There was no assistance in helping customers find other routes to their destination, nor any other kind of support. It was a chaotic experience. I'm not likely to fly with AA going forward.

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

We were upgraded and after just a short delay in attending to a safety check we were on our way. Would definately fly Qantas International on their Dreamliner again.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

I tried to check in online but was unable to do so. I stood in line for nearly two hours to check in. American Airlines was understaffed. When I finally got to the kiosk to check in, I was still unable to check in. No AA staff was available to help. Finally one of the airport security agents who was helping passengers became of lack of AA Staff told me: “I think the reason you can’t check in is that you are starting your name with an upper case letter when you write it. Just write it with all lower case letters.” That did allow me to check in. HOW COULD ANYONE POSSIBLY KNOW THAT IF THEY USE AN INITIAL UPPER CASE LETTER TO SPELL THEIR OWN NAME, AA WOULD NOT ALLOW THEM TO CHECK IN?????? Then I had to wait in line over half an hour again to drop off my baggage. Although I arrived at the airport 3 hours early, by the time I got to the gate, they had already started boarding.

One of the oldest most uncomfortable "lay down" seats I've ever experienced. Old plane and old seats that don't lay flat. The seat back does not even recline - at all. Instead the legrest awkwardly extends to fill the gap between a small cubby into which you must insert your feet/legs. I am 5' 11" and could not lay straight but had to tuck my knees. Ticket was also very expensive. Would not recommend flying business/first on Finair from Melbourne to Bangkok and will not do so again myself.

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

Was bumped to a later flight because of inefficiency on part of the airline.

International baggage recheck process in Philadelphia was a disaster. Waited 1 hour and 45 minutes to receive our bags. Waited 15 minutes to recheck bags, flight notification boards were blank so we asked an AA representative for our connecting gate and we were directed to the wrong terminal and gate. Our connection window was over 3 hours and we made our flight by 5 minutes. We pulled away from the gate and sat on the runway for 1 1/2 hours. 1 of our 4 bags didn’t make it to Phoenix. The mobile app for lost baggage didn’t work, the AA rep had to manually fix.

I miss my flight and they could not rebook me that day because the other flight was full, and for the next day I had to pay a whole new fee again which I think is unprofessional

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Seats were roomy. Lavatories were surprisingly big and clean. Plenty of entertainment available. We were fed and offered drinks, multiple times during the flight.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

Everything you need to know for your flight from Sydney to Philadelphia

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