Cheap flights from Sydney to Philadelphia from $714

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Philadelphia departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Sydney to Philadelphia

Cheap return flights

 Logo
14:15 - 07:02SYD-PHL
31h 47m2 stops
 Logo
17:50 - 13:15PHL-SYD
28h 25m2 stops
$1,683
Find Deal
Mon, 13 Oct - Thu, 23 Oct
 Logo
13:15 - 05:55SYD-PHL
30h 40m2 stops
 Logo
17:37 - 11:45PHL-SYD
28h 08m2 stops
$1,720
Find Deal
Mon, 15 Sep - Sat, 20 Sep
Alaska Airlines Logo
21:40 - 05:40SYD-PHL
47h 00m2 stops
Alaska Airlines Logo
19:11 - 19:45PHL-SYD
57h 34m2 stops
$1,739Alaska Airlines
Find Deal
Thu, 16 Oct - Sat, 25 Oct
 Logo
17:45 - 13:50SYD-PHL
34h 05m2 stops
 Logo
06:45 - 07:30PHL-SYD
34h 45m2 stops
$1,743
Find Deal
Mon, 8 Sep - Sat, 13 Sep
American Airlines Logo
09:10 - 17:42SYD-PHL
22h 32m1 stop
American Airlines Logo
18:55 - 07:05PHL-SYD
22h 10m1 stop
$1,780American Airlines
Find Deal
Mon, 15 Sep - Mon, 22 Sep
American Airlines Logo
10:10 - 10:33SYD-PHL
39h 23m2 stops
American Airlines Logo
15:56 - 08:05PHL-SYD
25h 09m2 stops
$1,783American Airlines
Find Deal
Fri, 10 Oct - Mon, 20 Oct
Air Canada Logo
10:20 - 14:38SYD-PHL
43h 18m2 stops
Air Canada Logo
09:20 - 08:20PHL-SYD
56h 00m2 stops
$1,809Air Canada
Find Deal
Fri, 10 Oct - Fri, 17 Oct
Air Canada Logo
10:20 - 21:38SYD-PHL
50h 18m2 stops
Air Canada Logo
15:25 - 08:20PHL-SYD
49h 55m3 stops
$1,817Air Canada
Find Deal
Fri, 10 Oct - Fri, 17 Oct
Delta Logo
10:25 - 23:05SYD-PHL
27h 40m2 stops
Delta Logo
06:00 - 07:35PHL-SYD
34h 35m2 stops
$1,865Delta
Find Deal
Sat, 11 Oct - Tue, 21 Oct
United Airlines Logo
11:20 - 00:45SYD-PHL
28h 25m3 stops
United Airlines Logo
15:00 - 08:00PHL-SYD
26h 00m2 stops
$1,974United Airlines
Find Deal
Fri, 10 Oct - Thu, 23 Oct

American Airlines flights from Sydney to Philadelphia

Our best American Airlines deals on Sydney to Philadelphia flight tickets
American Airlines
15 Sept
SYD09:10Sydney Kingsford Smith
22h 32m
1 stop
PHL17:42Philadelphia
22 Sept
PHL18:55Philadelphia
22h 10m
1 stop
SYD07:05Sydney Kingsford Smith
American Airlines
10 Oct
SYD10:10Sydney Kingsford Smith
39h 23m
2 stops
PHL10:33Philadelphia
20 Oct
PHL15:56Philadelphia
25h 09m
2 stops
SYD08:05Sydney Kingsford Smith
American Airlines
14 Sept
SYD09:10Sydney Kingsford Smith
22h 32m
1 stop
PHL17:42Philadelphia
21 Sept
PHL18:55Philadelphia
22h 10m
1 stop
SYD07:05Sydney Kingsford Smith

Alaska Airlines flights from Sydney to Philadelphia

Our best Alaska Airlines deals on Sydney to Philadelphia flight tickets
Alaska Airlines
16 Oct
SYD21:40Sydney Kingsford Smith
47h 00m
2 stops
PHL05:40Philadelphia
25 Oct
PHL19:11Philadelphia
57h 34m
2 stops
SYD19:45Sydney Kingsford Smith
Alaska Airlines
14 Oct
SYD21:40Sydney Kingsford Smith
35h 31m
2 stops
PHL18:11Philadelphia
23 Oct
PHL19:11Philadelphia
33h 34m
2 stops
SYD19:45Sydney Kingsford Smith
Alaska Airlines
23 Sept
SYD21:40Sydney Kingsford Smith
46h 22m
2 stops
PHL06:02Philadelphia
2 Oct
PHL18:57Philadelphia
34h 48m
2 stops
SYD19:45Sydney Kingsford Smith

momondo Fare Finder

 
Customise your flight search to find flights from Sydney to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 27 August 2025.
Use the filters below to find and compare flights from Sydney to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 13/10

14:15-07:02

2 stops31h 47m

Philadelphia

Thu 23/10

17:50-13:15

2 stops28h 25m

$1,683

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 15/9

13:15-05:55

2 stops30h 40m

Philadelphia

Sat 20/9

17:37-11:45

2 stops28h 08m

$1,720

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Thu 16/10

21:40-05:40

2 stops47h 00m

Philadelphia

Sat 25/10

19:11-19:45

2 stops57h 34m

$1,739

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 8/9

17:45-13:50

2 stops34h 05m

Philadelphia

Sat 13/9

06:45-07:30

2 stops34h 45m

$1,743

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 15/9

09:10-17:42

1 stop22h 32m

Philadelphia

Mon 22/9

18:55-07:05

1 stop22h 10m

$1,780

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 10/10

10:10-10:33

2 stops39h 23m

Philadelphia

Mon 20/10

15:56-08:05

2 stops25h 09m

$1,783

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 10/10

10:20-14:38

2 stops43h 18m

Philadelphia

Fri 17/10

09:20-08:20

2 stops56h 00m

$1,809

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 10/10

10:20-21:38

2 stops50h 18m

Philadelphia

Fri 17/10

15:25-08:20

3 stops49h 55m

$1,817

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sat 11/10

10:25-23:05

2 stops27h 40m

Philadelphia

Tue 21/10

06:00-07:35

2 stops34h 35m

$1,865

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 10/10

11:20-00:45

3 stops28h 25m

Philadelphia

Thu 23/10

15:00-08:00

2 stops26h 00m

$1,974

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Philadelphia from

How to get the cheapest flight ticket from Sydney to Philadelphia

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 typical price of a round-trip flight between Sydney and Philadelphia?

What is the cheapest month to fly to Philadelphia?

If you aren’t able to travel to Philadelphia during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,224.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Sydney to Philadelphia is on a Thursday when prices can be found for as low as $1,990. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $2,496. These prices are subject to change though, so be sure to set up a Price Alert for flights to Philadelphia.

What is the cheapest time of day to depart on your flight to Philadelphia?

Flying to Philadelphia from Sydney in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,680 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Philadelphia is in the afternoon when prices are around $2,364.

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

You are more likely to see cheaper flights to Philadelphia from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $2,149 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Sydney for as low as $1,310 on momondo.

When to book flights from Sydney to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Sydney to Philadelphia (SYD to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Philadelphia

Direct flights

None
There are no direct flights from Sydney to Philadelphia. There are no popular flight routes from Sydney to Philadelphia.
  • How far is Sydney Kingsford Smith to Philadelphia by plane?

    Sydney Kingsford Smith and Philadelphia are 15874.2 km apart from one another. A reasonable flight in good conditions will take 20h 50m.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Philadelphia Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Philadelphia Airport refresh daily.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Philadelphia Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Philadelphia Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sydney to Philadelphia?

Best airlines flying from Sydney to Philadelphia

Compare and see reviews for airlines that fly from Sydney to Philadelphia with momondo
Airline
Rating
Free cancellation
Price
DeltaPriceFrom $1,186Free cancellationRating
7.9
7,977 reviews
Search Delta flights
United AirlinesPriceFrom $1,234Free cancellationRating
7.4
8,945 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,489Free cancellationRating
7.1
10,000 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,695Free cancellationRating
8.0
505 reviews
Search Air New Zealand flights
Qantas AirwaysPriceFrom $1,749Free cancellationRating
7.5
905 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,903Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Rehoboth Beach
Elkton

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Philadelphia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Philadelphia from Sydney.

Can I find flights from Sydney to Philadelphia with flexible booking policies on momondo?

Flights from Sydney to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sydney to Philadelphia?

momondo provides multiple filters to help you find the best flight to Philadelphia from Sydney. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Sydney to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Sydney and alert you when they change.

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 1/9
Mon 8/9

Find better results for your trip to the United States

Airports servicing Pennsylvania