SYD - PHL

$638 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 9/3. 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

Sun, Aug 24 - Fri, Aug 29
Air New Zealand Logo
11:50 am - 5:21 amSYD-PHL
31h 31m2 stops
Air New Zealand Logo
8:15 am - 8:45 amPHL-SYD
34h 30m2 stops
$1,118Air New Zealand
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Fri, Aug 1 - Fri, Aug 8
Logo
5:45 pm - 6:58 amSYD-PHL
27h 13m1 stop
Logo
5:48 pm - 7:30 amPHL-SYD
23h 42m1 stop
$1,132
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Fri, Aug 1 - Thu, Aug 14
American Airlines Logo
9:10 am - 5:50 amSYD-PHL
34h 40m2 stops
American Airlines Logo
1:20 pm - 6:55 amPHL-SYD
27h 35m1 stop
$1,166American Airlines
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Fri, Aug 1 - Thu, Aug 14
American Airlines Logo
9:10 am - 6:42 pmSYD-PHL
23h 32m2 stops
American Airlines Logo
10:45 am - 7:05 amPHL-SYD
30h 20m2 stops
$1,208American Airlines
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Mon, Jul 28 - Mon, Aug 11
Delta Logo
9:25 am - 9:01 pmSYD-PHL
25h 36m2 stops
Delta Logo
9:39 am - 6:35 amPHL-SYD
30h 56m2 stops
$1,292Delta
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Mon, Dec 15 - Thu, Jan 29
Delta Logo
11:05 am - 5:46 amSYD-PHL
34h 41m2 stops
Delta Logo
6:30 am - 8:35 amPHL-SYD
34h 05m2 stops
$1,293Delta
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Mon, Jul 28 - Mon, Aug 11
Qantas Airways Logo
9:10 am - 5:17 pmSYD-PHL
22h 07m1 stop
Qantas Airways Logo
6:50 pm - 7:05 amPHL-SYD
22h 15m1 stop
$1,317Qantas Airways
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Mon, Jul 28 - Mon, Aug 11
Qantas Airways Logo
9:10 am - 5:17 pmSYD-PHL
22h 07m1 stop
Qantas Airways Logo
5:23 pm - 7:05 amPHL-SYD
23h 42m1 stop
$1,362Qantas Airways
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Thu, Jul 31 - Thu, Aug 7
Air Canada Logo
9:20 am - 10:07 pmSYD-PHL
50h 47m3 stops
Air Canada Logo
9:20 am - 7:20 amPHL-SYD
56h 00m2 stops
$1,413Air Canada
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Fri, Aug 1 - Fri, Aug 8
Air Canada Logo
9:20 am - 2:37 pmSYD-PHL
43h 17m2 stops
Air Canada Logo
9:20 am - 7:20 amPHL-SYD
32h 00m2 stops
$1,428Air Canada
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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.

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 $1,975 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. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

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Good to know

Low seasonJanuary
High seasonFebruary
Cheapest flight$638
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 45% 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 $638 for a one-way ticket and $1,118 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, SkyTeam, and Star Alliance are the airline alliances operating flights between Sydney and Philadelphia, with oneworld being the most commonly used for this route.

  • 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 airline 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 860 reviews
8.2Crew
7.1Entertainment
7.7Boarding
7.4Comfort
6.9Food
Airline reviews

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

10.0 ExcellentPeter, Jun 2025MEL - HKG
Read more Qantas Airways reviews

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.

Inflight entertainment, poor that there are no headrest screens on aircraft used for an international flight.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Touch screens were very difficult to use, generally being laggy and unresponsive- it was quite an art to get it to play the thing you wanted rather than some thing at random. Selection of films and Tv was good when touchscreen decided to finally respond.

Their aircraft are old and amenities lack way behind other international carriers leaving from BNE. Even in economy

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

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

Information on your arrival and departure airports

Sydney (SYD)
Philadelphia (PHL)

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