$840 Cheap Flights from Harrisburg (MDT) to Sydney (SYD)

View $840 flight on Mon, Feb 9, 2026Opens in a new window

Popular airlines from Harrisburg Intl. Airport (MDT) to Sydney Airport (SYD)

Cheap Flights from Harrisburg to Sydney (MDT-SYD)

Prices were available within the past 7 days and start at $840 for one-way flights and $1,268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Mar 3 - Tue, Mar 10
MDT
Harrisburg
SYD
Sydney
$1,268 Roundtrip, found 1 day ago
$1,268
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 3 from Harrisburg to Sydney, returning Tue, Mar 10, priced at $1,268 found 1 day ago
Delta
Tue, Nov 18 - Tue, Nov 25
MDT
Harrisburg
SYD
Sydney
$1,275 Roundtrip, found 1 day ago
$1,275
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 18 from Harrisburg to Sydney, returning Tue, Nov 25, priced at $1,275 found 1 day ago
Delta
Tue, Mar 3 - Tue, Mar 10
MDT
Harrisburg
SYD
Sydney
$1,275 Roundtrip, found 1 day ago
$1,275
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 3 from Harrisburg to Sydney, returning Tue, Mar 10, priced at $1,275 found 1 day ago
Delta
Sun, Mar 29 - Mon, Apr 6
MDT
Harrisburg
SYD
Sydney
$1,286 Roundtrip, found 1 day ago
$1,286
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Mar 29 from Harrisburg to Sydney, returning Mon, Apr 6, priced at $1,286 found 1 day ago
Delta
Tue, Mar 3 - Tue, Mar 10
MDT
Harrisburg
SYD
Sydney
$1,286 Roundtrip, found 1 day ago
$1,286
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 3 from Harrisburg to Sydney, returning Tue, Mar 10, priced at $1,286 found 1 day ago
Delta
Sat, May 30 - Wed, Jun 17
MDT
Harrisburg
SYD
Sydney
$1,304 Roundtrip, found 3 days ago
$1,304
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, May 30 from Harrisburg to Sydney, returning Wed, Jun 17, priced at $1,304 found 3 days ago
American Airlines
Thu, Jan 22 - Mon, Feb 2
MDT
Harrisburg
SYD
Sydney
$1,555 Roundtrip, found 20 hours ago
$1,555
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Jan 22 from Harrisburg to Sydney, returning Mon, Feb 2, priced at $1,555 found 20 hours ago
United
Mon, Aug 24 - Mon, Aug 31
MDT
Harrisburg
SYD
Sydney
$1,566 Roundtrip, found 1 day ago
$1,566
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 24 from Harrisburg to Sydney, returning Mon, Aug 31, priced at $1,566 found 1 day ago
Qatar Airways
Tue, Mar 3 - Tue, Mar 10
MDT
Harrisburg
SYD
Sydney
$1,849 Roundtrip, found 1 day ago
$1,849
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Tue, Mar 3 from Harrisburg to Sydney, returning Tue, Mar 10, priced at $1,849 found 1 day ago
Japan Airlines
Tue, Mar 3 - Thu, Mar 19
MDT
Harrisburg
SYD
Sydney
$2,226 Roundtrip, found 3 days ago
$2,226
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Tue, Mar 3 from Harrisburg to Sydney, returning Thu, Mar 19, priced at $2,226 found 3 days ago

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $1,337
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $1,337

Frequently asked questions

How much does a flight from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD) cost?
Lock in a cheap one-way flight from $840 or cheap return flight from $1,268 from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD)?
The cheapest month to fly from MDT to SYD is March, when demand is low. Off-peak months are generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest MDT to SYD flight.
How many flights per day from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD)?
You'll have to catch a flight with a layover when traveling from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from MDT to SYD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD)?
To avoid potential delays on the Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD) last-minute?
Last-minute fares from MDT to SYD are typically more expensive. For the best rates, start searching for flights as soon as possible. That being said, if you can play around with your travel dates, it's possible to score a cheap fare just before your departure.
Is it cheaper to book a MDT to SYD flight and hotel package?
Booking a MDT to SYD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of hotels and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Harrisburg Intl. Airport (MDT) to Kingsford Smith Intl. Airport (SYD)?
In most cases, you can modify or cancel your MDT to SYD flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Harrisburg Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
American Airlines, Delta, Japan Airlines, Korean Air, Qatar Airways, United
Roundtrip price
$1,268
Distance
9791 mi

Book with confidence

Harrisburg to Sydney Flights

The cheapest times to fly from Harrisburg to Sydney

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Harrisburg to Sydney are during the month of March. You can find some of the cheapest flights from Harrisburg to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harrisburg to Sydney

Sunday is one of the best days to book for cheap flights from Harrisburg to Sydney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Harrisburg to Sydney

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Harrisburg to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $840 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Harrisburg to Sydney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Harrisburg to Sydney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Harrisburg to Sydney Flights

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*Available to One Key members.