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Cheap flights from Allentown to Sydney from $654

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to Sydney departing on 8/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Allentown to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:16 am - 6:50 am
ABE
-
SYD
34h 34m
2 stops
Delta Logo
9:15 am - 10:23 pm
SYD
-
ABE
27h 08m
2 stops
$1,190Delta
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
10:35 am - 7:00 am
ABE
-
SYD
30h 25m
2 stops
United Airlines Logo
9:30 am - 9:57 am
SYD
-
ABE
38h 27m
2 stops
$1,191United Airlines
Mon, Aug 10 - Mon, Aug 17
United Airlines Logo
6:15 am - 6:55 am
ABE
-
SYD
34h 40m
2 stops
United Airlines Logo
10:20 am - 9:57 am
SYD
-
ABE
37h 37m
2 stops
$1,242United Airlines
Fri, Aug 21 - Wed, Sep 2
United Airlines Logo
6:15 am - 7:00 am
ABE
-
SYD
34h 45m
2 stops
United Airlines Logo
10:20 am - 9:57 am
SYD
-
ABE
37h 37m
2 stops
$1,292United Airlines
Thu, Aug 6 - Thu, Aug 13
United Airlines Logo
10:32 am - 6:55 am
ABE
-
SYD
30h 23m
2 stops
United Airlines Logo
10:20 am - 9:57 am
SYD
-
ABE
37h 37m
2 stops
$1,721United Airlines
Tue, Aug 25 - Wed, Sep 2
United Airlines Logo
10:32 am - 7:00 am
ABE
-
SYD
30h 28m
2 stops
United Airlines Logo
10:20 am - 9:57 am
SYD
-
ABE
37h 37m
2 stops
$1,786United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
6:01 pm - 7:00 am
ABE
-
SYD
46h 59m
2 stops
United Airlines Logo
10:20 am - 9:57 am
SYD
-
ABE
37h 37m
2 stops
$1,813United Airlines
Sun, Aug 23 - Wed, Sep 2
United Airlines Logo
10:37 am - 7:00 am
ABE
-
SYD
28h 23m
2 stops
United Airlines Logo
9:20 am - 8:57 pm
SYD
-
ABE
27h 37m
2 stops
$2,381United Airlines
Mon, Nov 2 - Thu, Nov 5
United Airlines Logo
6:25 am - 9:20 am
ABE
-
SYD
34h 55m
2 stops
United Airlines Logo
11:20 am - 8:57 pm
SYD
-
ABE
25h 37m
2 stops
$2,382United Airlines
Mon, Nov 2 - Thu, Nov 5
United Airlines Logo
10:37 am - 7:00 am
ABE
-
SYD
28h 23m
2 stops
United Airlines Logo
9:20 am - 8:57 pm
SYD
-
ABE
27h 37m
2 stops
$2,383United Airlines
Mon, Nov 2 - Thu, Nov 5

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United Airlines flights from Allentown to Sydney

Our best United Airlines deals on Allentown to Sydney flight tickets
United Airlines
Aug 10
ABE10:35 amAllentown-Bethlehem
30h 25m
2 stops
SYD7:00 amSydney Kingsford Smith
Aug 17
SYD9:30 amSydney Kingsford Smith
38h 27m
2 stops
ABE9:57 amAllentown-Bethlehem
$1,191
United Airlines
Aug 21
ABE6:15 amAllentown-Bethlehem
34h 40m
2 stops
SYD6:55 amSydney Kingsford Smith
Sep 2
SYD10:20 amSydney Kingsford Smith
37h 37m
2 stops
ABE9:57 amAllentown-Bethlehem
$1,242
United Airlines
Aug 25
ABE10:32 amAllentown-Bethlehem
30h 23m
2 stops
SYD6:55 amSydney Kingsford Smith
Sep 2
SYD10:20 amSydney Kingsford Smith
37h 37m
2 stops
ABE9:57 amAllentown-Bethlehem
$1,721

Delta flights from Allentown to Sydney

Our best Delta deals on Allentown to Sydney flight tickets
Delta
Aug 11
ABE6:16 amAllentown-Bethlehem
34h 34m
2 stops
SYD6:50 amSydney Kingsford Smith
Aug 18
SYD9:15 amSydney Kingsford Smith
27h 08m
2 stops
ABE10:23 pmAllentown-Bethlehem
$1,190
Delta
Jul 2
ABE6:20 amAllentown-Bethlehem
34h 30m
2 stops
SYD6:50 amSydney Kingsford Smith
Jul 8
SYD9:15 amSydney Kingsford Smith
27h 53m
2 stops
ABE11:08 pmAllentown-Bethlehem
$1,708

momondo 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, momondo users made 832,500 searches. Data last updated June 27, 2026.
Use the filters below to find and compare flights from Allentown to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Tue 8/11

6:16 am-6:50 am

2 stops34h 34m

Sydney Kingsford Smith

Tue 8/18

9:15 am-10:23 pm

2 stops27h 08m

$1,190

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 8/10

10:35 am-7:00 am

2 stops30h 25m

Sydney Kingsford Smith

Mon 8/17

9:30 am-9:57 am

2 stops38h 27m

$1,191

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Fri 8/21

6:15 am-6:55 am

2 stops34h 40m

Sydney Kingsford Smith

Wed 9/2

10:20 am-9:57 am

2 stops37h 37m

$1,242

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Thu 8/6

6:15 am-7:00 am

2 stops34h 45m

Sydney Kingsford Smith

Thu 8/13

10:20 am-9:57 am

2 stops37h 37m

$1,292

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Tue 8/25

10:32 am-6:55 am

2 stops30h 23m

Sydney Kingsford Smith

Wed 9/2

10:20 am-9:57 am

2 stops37h 37m

$1,721

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Wed 8/26

10:32 am-7:00 am

2 stops30h 28m

Sydney Kingsford Smith

Wed 9/2

10:20 am-9:57 am

2 stops37h 37m

$1,786

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Sun 8/23

6:01 pm-7:00 am

2 stops46h 59m

Sydney Kingsford Smith

Wed 9/2

10:20 am-9:57 am

2 stops37h 37m

$1,813
Quickest round-trip

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 11/2

10:37 am-7:00 am

2 stops28h 23m

Sydney Kingsford Smith

Thu 11/5

9:20 am-8:57 pm

2 stops27h 37m

$2,381

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 11/2

6:25 am-9:20 am

2 stops34h 55m

Sydney Kingsford Smith

Thu 11/5

11:20 am-8:57 pm

2 stops25h 37m

$2,382

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 11/2

10:37 am-7:00 am

2 stops28h 23m

Sydney Kingsford Smith

Thu 11/5

9:20 am-8:57 pm

2 stops27h 37m

$2,383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Allentown to Sydney

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 cheapest airline that flies from Allentown-Bethlehem to Sydney Kingsford Smith?

United Airlines is the most popular carrier operating from Allentown-Bethlehem to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, Air Canada and Qantas Airways are the top three most popular airlines that fly to Sydney from Allentown according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 6 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When to book flights from Allentown to Sydney

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

Cheap Allentown to Sydney (ABE to SYD) flight deals and tips

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

Fastest flight time

28h 23m

Direct flights

None
The fastest flight from Allentown to Sydney takes 28h 23m
There are no direct flights from Allentown to Sydney. There are no popular flight routes from Allentown to Sydney.
Search flight deals

Frequently asked questions about flying from Allentown to Sydney

  • How far is Allentown-Bethlehem to Sydney Kingsford Smith by plane?

    There are 9851.4 mi between Allentown-Bethlehem and Sydney Kingsford Smith. 28h 23m is a normal flight duration for this route.

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

    Prices for flights from Allentown-Bethlehem Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Allentown-Bethlehem Airport to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith 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 license 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.

Traveling to a place near Sydney?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Allentown to Sydney. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Sydney from Allentown which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Allentown to Sydney.

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

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

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