HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$1,521+ Cheap flights from Allentown (ABE) to Sydney (SYD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SYD
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Allentown to Sydney

Cheapest flights from Allentown to Sydney
Explore the most affordable flight options available from Allentown to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/312:48 pm
ABE
-
SYD
2 stops26h 02m
Delta
Fri 2/2010:40 am
SYD
-
ABE
2 stops28h 09m
Delta
Deal found 1/25$1,521
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:36 am
ABE
-
SYD
2 stops30h 39m
United Airlines
Sun 2/2211:20 am
SYD
-
ABE
2 stops25h 33m
United Airlines
Deal found 1/25$2,222
This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/412:48 pm
ABE
-
SYD
2 stops27h 42m
Delta
Sat 2/212:15 pm
SYD
-
ABE
2 stops24h 34m
Delta
Deal found 1/25$5,781

Find flight deals from Allentown to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$2,222
(United Airlines)
Provider with most accurate pricing for Allentown-Bethlehem-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Sydney Kingsford Smith flights.
Search Deals
From Allentown-Bethlehem to Sydney Kingsford Smith
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to Sydney 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, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Allentown to Sydney that are best for you.

Fly from

Allentown

Fly to

Sydney

Route

Depart

Return

Price

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Wed 2/18

10:36 am-9:15 am

2 stops30h 39m

Sydney Kingsford Smith

Sun 2/22

11:20 am-8:53 pm

2 stops25h 33m

$2,222

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

  • Most accurate provider: When it comes to deals on Allentown-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Allentown-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Allentown-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Allentown to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Allentown with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Allentown to Sydney

What is the cheapest month to book a flight from Allentown to Sydney?

Currently, February is the cheapest month in which you can book a flight from Allentown to Sydney (average of $843). Flying from Allentown to Sydney in January is currently the most expensive (average of $964). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Allentown to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Allentown to Sydney?

    A quick flight from Allentown to Sydney can take about 30h 39m. United Airlines provides one of the quickest options available for as low as $2,222. Allentown and Sydney are separated by a distance of 9857 mi.

  • Can I find deals for flights from Allentown to Sydney that include hotel bookings?

    Yes. In addition to deals on Allentown to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Allentown to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Allentown to Sydney.

  • Can I find deals for business class flights from Allentown to Sydney?

    Yes. Cheapflights offers flight deals from Allentown to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Allentown to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Allentown to Sydney (average of $843). Flying from Allentown to Sydney in January is currently the most expensive (average of $964). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights