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Cheap flights from Allentown to Sydney from $1,839

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SYD
6 Aug — 13 Aug1
1 adult

Cheap 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 1 August 2025.

Round-trip from

$1,839
United Airlines
  • United Airlines
  • 13/9-20/9
  • 4 total stops
  • 54h 19m total
  • Allentown to Sydney
Search Deals

Find 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 1 August 2025.

Sat 13/913:00ABE - SYD
2 stops27h 55mUnited Airlines
Sat 20/909:30SYD - ABE
2 stops26h 24mUnited Airlines
Deal found 30/7$1,839
Thu 13/1106:30ABE - SYD
2 stops34h 00mDelta
Mon 17/1110:40SYD - ABE
2 stops28h 12mDelta
Deal found 30/7$2,856

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 1 August 2025.
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

Sat 13/9

13:00-06:55

2 stops27h 55m

Sydney Kingsford Smith

Sat 20/9

09:30-21:54

2 stops26h 24m

$1,839

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Thu 13/11

06:30-08:30

2 stops34h 00m

Sydney Kingsford Smith

Mon 17/11

10:40-22:52

2 stops28h 12m

$2,856

Flights are sorted by cheapest return flights first.

Deals found on 30/7

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 return 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, May is the cheapest month in which you can book a flight from Allentown to Sydney (average of $129). Flying from Allentown to Sydney in October is currently the most expensive (average of $171). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 1 August 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Allentown to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,981 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,981 reviews
Delta
8.0
Very Good
7,981 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very Good
7,981 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines flying from Allentown to Sydney round-trip?

    According to our current data, United Airlines ($1,839), and Delta ($2,856) offers the cheapest pricing from Allentown to Sydney.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Allentown to Sydney (average of $129). Flying from Allentown to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Manly
Coogee
Terrigal
Cronulla
Lithgow
Bondi Beach
Randwick
Leura

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Why should you use Cheapflights to find cheap flight tickets from Allentown to Sydney?

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Can Cheapflights notify me if prices for flights from Allentown to Sydney become cheaper?

Yes! Start tracking prices for Allentown to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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