Cheap flights from Allentown to Sydney from $948

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 return flights

Enter your travel dates to find the best prices.
Delta Logo
06:16 - 06:50
ABE
-
SYD
34h 34m
2 stops
Delta Logo
09:15 - 22:23
SYD
-
ABE
27h 08m
2 stops
$1,725Delta
Tue, 11 Aug - Tue, 18 Aug
United Airlines Logo
10:35 - 07:00
ABE
-
SYD
30h 25m
2 stops
United Airlines Logo
09:30 - 09:57
SYD
-
ABE
38h 27m
2 stops
$1,726United Airlines
Mon, 10 Aug - Mon, 17 Aug
United Airlines Logo
10:37 - 07:00
ABE
-
SYD
28h 23m
2 stops
United Airlines Logo
09:20 - 20:57
SYD
-
ABE
27h 37m
2 stops
$3,451United Airlines
Mon, 2 Nov - Thu, 5 Nov
United Airlines Logo
06:25 - 09:20
ABE
-
SYD
34h 55m
2 stops
United Airlines Logo
11:20 - 20:57
SYD
-
ABE
25h 37m
2 stops
$3,453United Airlines
Mon, 2 Nov - Thu, 5 Nov
United Airlines Logo
10:37 - 07:00
ABE
-
SYD
28h 23m
2 stops
United Airlines Logo
09:20 - 20:57
SYD
-
ABE
27h 37m
2 stops
$3,454United Airlines
Mon, 2 Nov - Thu, 5 Nov
Multiple Airlines Logo
16:57 - 06:55
ABE
-
SYD
23h 58m
2 stops
Multiple Airlines Logo
06:25 - 22:40
SYD
-
ABE
30h 15m
3 stops
$4,018Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
09:36 - 17:10
ABE
-
SYD
41h 34m
2 stops
Multiple Airlines Logo
18:30 - 22:40
SYD
-
ABE
42h 10m
3 stops
$4,916Multiple Airlines
Mon, 10 Aug - Mon, 17 Aug
Multiple Airlines Logo
06:00 - 18:50
ABE
-
SYD
44h 50m
2 stops
Multiple Airlines Logo
20:00 - 22:15
SYD
-
ABE
42h 15m
3 stops
$21,870Multiple Airlines
Mon, 21 Dec - Fri, 1 Jan
Multiple Airlines Logo
11:50 - 06:55
ABE
-
SYD
27h 05m
2 stops
Multiple Airlines Logo
14:05 - 23:29
SYD
-
ABE
25h 24m
2 stops
$22,430Multiple Airlines
Mon, 21 Dec - Fri, 1 Jan

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Delta flights from Allentown to Sydney

Our best Delta deals on Allentown to Sydney flight tickets
Delta
11 Aug
ABE06:16Allentown-Bethlehem
34h 34m
2 stops
SYD06:50Sydney Kingsford Smith
18 Aug
SYD09:15Sydney Kingsford Smith
27h 08m
2 stops
ABE22:23Allentown-Bethlehem
$1,725
Delta
2 July
ABE06:20Allentown-Bethlehem
34h 30m
2 stops
SYD06:50Sydney Kingsford Smith
8 July
SYD09:15Sydney Kingsford Smith
27h 53m
2 stops
ABE23:08Allentown-Bethlehem
$2,476

United Airlines flights from Allentown to Sydney

Our best United Airlines deals on Allentown to Sydney flight tickets
United Airlines
10 Aug
ABE10:35Allentown-Bethlehem
30h 25m
2 stops
SYD07:00Sydney Kingsford Smith
17 Aug
SYD09:30Sydney Kingsford Smith
38h 27m
2 stops
ABE09:57Allentown-Bethlehem
$1,726
United Airlines
2 Nov
ABE10:37Allentown-Bethlehem
28h 23m
2 stops
SYD07:00Sydney Kingsford Smith
5 Nov
SYD09:20Sydney Kingsford Smith
27h 37m
2 stops
ABE20:57Allentown-Bethlehem
$3,451
United Airlines
2 Nov
ABE06:25Allentown-Bethlehem
34h 55m
2 stops
SYD09:20Sydney Kingsford Smith
5 Nov
SYD11:20Sydney Kingsford Smith
25h 37m
2 stops
ABE20:57Allentown-Bethlehem
$3,453

momondo 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, momondo users made 78,305 searches. Data last updated 28 June 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 return flight

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Tue 11/8

06:16-06:50

2 stops34h 34m

Sydney Kingsford Smith

Tue 18/8

09:15-22:23

2 stops27h 08m

$1,725

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 10/8

10:35-07:00

2 stops30h 25m

Sydney Kingsford Smith

Mon 17/8

09:30-09:57

2 stops38h 27m

$1,726

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 2/11

10:37-07:00

2 stops28h 23m

Sydney Kingsford Smith

Thu 5/11

09:20-20:57

2 stops27h 37m

$3,451

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 2/11

06:25-09:20

2 stops34h 55m

Sydney Kingsford Smith

Thu 5/11

11:20-20:57

2 stops25h 37m

$3,453

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 2/11

10:37-07:00

2 stops28h 23m

Sydney Kingsford Smith

Thu 5/11

09:20-20:57

2 stops27h 37m

$3,454

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Tue 11/8

16:57-06:55

2 stops23h 58m

Sydney Kingsford Smith

Tue 18/8

06:25-22:40

3 stops30h 15m

$4,018

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 10/8

09:36-17:10

2 stops41h 34m

Sydney Kingsford Smith

Mon 17/8

18:30-22:40

3 stops42h 10m

$4,916

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 21/12

06:00-18:50

2 stops44h 50m

Sydney Kingsford Smith

Fri 1/1

20:00-22:15

3 stops42h 15m

$21,870
Fastest return journey

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Mon 21/12

11:50-06:55

2 stops27h 05m

Sydney Kingsford Smith

Fri 1/1

14:05-23:29

2 stops25h 24m

$22,430
Cheapest one-way

AllentownSydney

ABE - SYD

ABESYD

Allentown-Bethlehem

Sat 8/8

17:41-07:00

2 stops47h 19m

$948

Flights are sorted by cheapest return 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 and Delta are the most popular carriers operating from Allentown-Bethlehem to Sydney Kingsford Smith

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 return 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.

Frequently asked questions about flying from Allentown to Sydney

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

    Sydney Kingsford Smith is 15854.2 km away from Allentown-Bethlehem. Flights usually cover this in 28h 23m, depending on flying conditions and air traffic around both airports.

  • 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 updated daily.

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

Travelling to a place near Sydney?

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

Flights from Allentown to Sydney 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 Allentown to Sydney?

momondo helps you find the best flight between Allentown and Sydney by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Allentown to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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1 adult
Tue 28/7
Tue 4/8

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