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Cheap flights from Green Bay to Sydney from $1,476

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Green Bay to Sydney departing on 2/20. 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
0 bags

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Find the cheapest flights from Green Bay to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:33 am - 7:00 am
GRB
-
SYD
27h 27m
2 stops
United Airlines Logo
2:00 pm - 9:50 am
SYD
-
GRB
36h 50m
2 stops
$1,476United Airlines
Fri, Feb 20 - Tue, Feb 24

momondo Fare Finder

 
Customize your flight search to find flights from Green Bay 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 February 9, 2026.
Use the filters below to find and compare flights from Green Bay to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Green BaySydney

GRB - SYD

GRBSYD

Green Bay Austin-Straubel

Fri 2/20

10:33 am-7:00 am

2 stops27h 27m

Sydney Kingsford Smith

Tue 2/24

2:00 pm-9:50 am

2 stops36h 50m

$1,476

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Green Bay to Sydney

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

Cheap Green Bay to Sydney (GRB to SYD) flight deals and tips

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

Fastest flight time

27h 27m

Direct flights

None
The fastest flight from Green Bay to Sydney takes 27h 27m
There are no direct flights from Green Bay to Sydney. There are no popular flight routes from Green Bay to Sydney.
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  • How far is Green Bay Austin-Straubel to Sydney Kingsford Smith by plane?

    There are 9246.8 mi between Green Bay Austin-Straubel and Sydney Kingsford Smith. Flights usually cover this in 27h 27m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Green Bay Austin-Straubel Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Green Bay Austin-Straubel Airport to Sydney Kingsford Smith Airport are updated daily.

  • How old do you have to be to fly from Green Bay Austin-Straubel Airport to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Green Bay Austin-Straubel Airport to Sydney Kingsford Smith Airport.

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

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Green Bay to Sydney?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Green Bay from Sydney. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Green Bay to Sydney with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Sydney?

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

Why use momondo?

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

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

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

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

How can momondo help me find flights from Green Bay to Sydney?

momondo helps you find the best flight between Green Bay 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 Green Bay to Sydney right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Green Bay to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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