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$639+ Cheap flights from Key Largo, FL to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
ago 5 — ago 121
ter 8/5
ter 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Sydney Kingsford Smith are usually found in May or March, booked 25 days in advance, depart on a Sunday or Tuesday and return on a Friday

Cheap flight deals from Key Largo to Sydney

Keep the following information in mind while searching for Key Largo to Sydney flight deals. Data was last updated julho 31, 2025.

Round-trip from

$1,007
(Trip.com)

One-way from

$639
(Trip.com)

Popular in

December

Cheapest in

May

Average price

$1,465
From Key Largo to Sydney Kingsford Smith
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One-way flight from Key Largo to Sydney Kingsford Smith
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Highest demand for flights based on searches. 22% potential increase in price ($422 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($80 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Key Largo to Sydney

Cheapest flights from Key Largo to Sydney
Explore the most affordable flight options available from Key Largo to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 31, 2025.

This Trip.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/612:18 pmMIA - SYD
2 stops28h 47mMultiple Airlines
seg 9/2212:10 pmSYD - MIA
2 stops26h 02mMultiple Airlines
Deal found 7/31$1,007
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/62:20 pmMIA - SYD
2 stops51h 00mAir Canada
seg 9/229:20 amSYD - MIA
2 stops42h 00mAir Canada
Deal found 7/30$1,027
This oojo deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/268:45 amMIA - SYD
2 stops32h 00mAir New Zealand
sáb 12/137:15 pmSYD - MIA
2 stops55h 38mAir New Zealand
Deal found 7/31$1,244
This FlightHub deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/82:42 pmMIA - SYD
2 stops31h 03mFiji Airways
ter 9/166:00 amSYD - MIA
2 stops31h 05mFiji Airways
Deal found 7/31$1,311

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo 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 2,558,603 searches. Data last updated julho 31, 2025.
Use the filters below to find and compare flights from Key Largo to Sydney that are best for you.

Fly from

Key Largo

Fly to

Sydney

Route

Depart

Return

Price

MiamiSydney

MIA - SYD

MIASYD

Miami

sáb 9/6

12:18 pm-7:05 am

2 stops28h 47m

Sydney Kingsford Smith

seg 9/22

12:10 pm-12:12 am

2 stops26h 02m

$1,007

MiamiSydney

MIA - SYD

MIASYD

Miami

sáb 9/6

2:20 pm-7:20 am

2 stops51h 00m

Sydney Kingsford Smith

seg 9/22

9:20 am-1:20 pm

2 stops42h 00m

$1,027

MiamiSydney

MIA - SYD

MIASYD

Miami

qua 11/26

8:45 am-8:45 am

2 stops32h 00m

Sydney Kingsford Smith

sáb 12/13

7:15 pm-10:53 am

2 stops55h 38m

$1,244

MiamiSydney

MIA - SYD

MIASYD

Miami

seg 9/8

2:42 pm-11:45 am

2 stops31h 03m

Sydney Kingsford Smith

ter 9/16

6:00 am-11:05 pm

2 stops31h 05m

$1,311

MiamiSydney

MIA - SYD

MIASYD

Miami

dom 11/23

7:17 am-9:00 am

2 stops33h 43m

$639

MiamiSydney

MIA - SYD

MIASYD

Miami

qui 10/23

7:35 pm-1:15 pm

2 stops26h 40m

$691

MiamiSydney

MIA - SYD

MIASYD

Miami

dom 11/23

8:00 am-9:35 am

3 stops33h 35m

$891

MiamiSydney

MIA - SYD

MIASYD

Miami

dom 11/23

3:55 pm-9:00 am

1 stop25h 05m

$968

MiamiSydney

MIA - SYD

MIASYD

Miami

qua 8/27

7:40 pm-6:15 am

1 stop44h 35m

$1,011

MiamiSydney

MIA - SYD

MIASYD

Miami

dom 12/28

6:20 am-8:15 pm

2 stops45h 55m

$1,084

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 13 results
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Best time to book a flight from Key Largo to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Key Largo with our price prediction graph.
Estimated round-trip 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 Key Largo to Sydney

How far ahead should I book a flight from Key Largo to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Sydney. Price data was last updated on July 25, 2025.

The best time to book flights from Key Largo to Sydney is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Key Largo to Sydney?

Currently, February is the cheapest month in which you can book a flight from Key Largo to Sydney (average of $1,028). Flying from Key Largo to Sydney in December is currently the most expensive (average of $1,619). 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.

What is the cheapest time of day to fly from KE9 to SYD?

Find hourly flight availability from Key Largo to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 31, 2025.

When flying from Key Largo to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Key Largo to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Sydney flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Key Largo to Sydney?

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 julho 31, 2025.
Peruse reviews from past customers who have flown with Air Tahiti Nui, ANA, and Fiji Airways from Key Largo to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.6
Very good
68 reviews
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.4
Very good
922 reviews
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Fiji Airways
8.0
Very good
202 reviews
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air New Zealand
8.0
Very good
501 reviews
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Qantas Airways
7.5
Good
887 reviews
Air Tahiti Nui
8.6
Very good
68 reviews

Overall

8.6

Boarding

8.7

Food

7.7

Entertainment

7.2

Comfort

8.0

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Key Largo?

    If you book a flight to Sydney from Key Largo, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney. There are 0 flights from Key Largo to Kingsford Smith per day from 7 different airlines.

  • What are the cheapest airlines to fly from Key Largo to Sydney one-way?

    The cheapest airline one-way is Fiji Airways, with whom users have recently found tickets for as low as $691. However, be on the lookout for offers from Air Canada and Qantas Airways, as they are both options that can get you from Key Largo to Sydney for a low price.

  • Can I find deals for flights from Key Largo to Sydney that include hotel bookings?

    Yes. In addition to deals on Key Largo to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Sydney.

  • Can I find deals for business class flights from Key Largo to Sydney?

    Yes. Cheapflights offers flight deals from Key Largo 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 Key Largo to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Sydney (average of $1,028). Flying from Key Largo to Sydney in December is currently the most expensive (average of $1,619). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
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Manly
Coogee

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Top 7 airlines flying from Key Largo to Sydney

Discover the top 7 airlines that operate flights from Key Largo to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julho 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$413Average$1,197FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$850Average$1,386FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$865Average$1,237FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$946Average$1,721FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$946Average$1,037FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,081Average$1,611FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,306Average$1,817FlexibilityNo cancel feeOn-time74%

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