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$541+ Cheap flights from Key Largo, FL to Australia

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Key Largo to Australia

Keep the following information in mind while searching for Key Largo to Australia flight deals. Data was last updated septiembre 15, 2025.

Round-trip from

$1,053
(Trip.com)

One-way from

$541
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,511
From Key Largo to Australia
Search Deals
One-way flight from Key Largo to Australia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($462 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($81 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Key Largo to Australia

Cheapest flights from Key Largo to Australia
Explore the most affordable flight options available from Key Largo to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. 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.
lun. 10/205:15 amMIA - SYD
2 stops35h 50mMultiple Airlines
lun. 10/271:05 pmSYD - MIA
2 stops26h 29mMultiple Airlines
Deal found 9/14$1,053
This BestPriceTravel deal was found by Cheapflights users on 9/13. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/128:30 amMIA - BNE
1 stop29h 30mQantas Airways
mié. 2/256:30 pmBNE - MIA
2 stops39h 13mQantas Airways
Deal found 9/13$1,171
This oojo deal was found by Cheapflights users on 9/15. 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.
jue. 10/307:35 pmMIA - MEL
2 stops32h 10mMultiple Airlines
jue. 11/67:00 amMEL - MIA
2 stops30h 16mMultiple Airlines
Deal found 9/15$1,182
This BestPriceTravel deal was found by Cheapflights users on 9/14. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/25:50 pmMIA - BNE
2 stops25h 20mFiji Airways
mar. 5/511:35 amBNE - MIA
2 stops24h 04mFiji Airways
Deal found 9/14$1,194
This oojo deal was found by Cheapflights users on 9/13. 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.
mar. 10/287:35 pmMIA - SYD
2 stops26h 10mFiji Airways
mar. 11/42:10 pmSYD - MIA
2 stops23h 06mFiji Airways
Deal found 9/13$1,205
This BestPriceTravel deal was found by Cheapflights users on 9/14. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/115:30 pmMIA - BNE
2 stops25h 40mFiji Airways
mar. 5/511:35 amBNE - MIA
2 stops24h 04mFiji Airways
Deal found 9/14$1,246
This oojo deal was found by Cheapflights users on 9/14. 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.
lun. 11/35:35 pmMIA - SYD
2 stops26h 55mFiji Airways
mar. 11/182:10 pmSYD - MIA
2 stops23h 06mFiji Airways
Deal found 9/14$1,252
This oojo deal was found by Cheapflights users on 9/14. 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.
lun. 11/35:35 pmMIA - SYD
1 stop23h 25mQantas Airways
mar. 11/186:20 amSYD - MIA
2 stops23h 44mQantas Airways
Deal found 9/14$1,254
This oojo deal was found by Cheapflights users on 9/13. 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.
mar. 10/217:35 pmMIA - BNE
2 stops24h 50mFiji Airways
mar. 1/2011:25 amBNE - MIA
2 stops25h 06mFiji Airways
Deal found 9/13$1,255
This oojo deal was found by Cheapflights users on 9/14. 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.
jue. 10/237:35 pmMIA - SYD
2 stops26h 40mFiji Airways
jue. 11/66:00 amSYD - MIA
2 stops31h 16mFiji Airways
Deal found 9/14$1,262
This BestPriceTravel deal was found by Cheapflights users on 9/14. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/129:00 amMIA - BNE
2 stops33h 55mAir New Zealand
mié. 2/258:20 amBNE - MIA
2 stops28h 39mAir New Zealand
Deal found 9/14$1,264
This BestPriceTravel deal was found by Cheapflights users on 9/13. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/185:30 pmMIA - BNE
2 stops25h 40mFiji Airways
mar. 5/1911:35 amBNE - MIA
2 stops24h 04mFiji Airways
Deal found 9/13$1,268

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Australia 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 septiembre 15, 2025.
Use the filters below to find and compare flights from Key Largo to Australia that are best for you.

Fly from

Key Largo

Fly to

Australia

Route

Depart

Return

Price

MiamiBrisbane

MIA - BNE

MIABNE

Miami

mar. 12/2

5:50 pm-10:10 am

2 stops25h 20m

Brisbane

mar. 5/5

11:35 am-9:39 pm

2 stops24h 04m

$1,194

MiamiMelbourne

MIA - MEL

MIAMEL

Miami

mar. 1/13

5:29 pm-6:45 pm

2 stops33h 16m

Melbourne

sáb. 2/28

7:00 am-9:29 pm

2 stops30h 29m

$1,200

MiamiSydney

MIA - SYD

MIASYD

Miami

lun. 11/3

5:35 pm-9:00 am

1 stop23h 25m

Sydney Kingsford Smith

mar. 11/18

6:20 am-2:04 pm

2 stops23h 44m

$1,254

MiamiAdelaide

MIA - ADL

MIAADL

Miami

jue. 10/30

7:35 pm-12:15 pm

2 stops26h 10m

Adelaide

jue. 11/6

1:15 pm-9:16 pm

2 stops23h 31m

$1,283

MiamiSydney

MIA - SYD

MIASYD

Miami

mar. 10/28

7:35 pm-12:45 pm

2 stops26h 10m

Sydney Kingsford Smith

mar. 11/4

2:10 pm-9:16 pm

2 stops23h 06m

$1,308

MiamiSydney

MIA - SYD

MIASYD

Miami

jue. 11/6

5:30 pm-1:00 pm

2 stops27h 30m

Sydney Kingsford Smith

jue. 11/20

2:00 pm-8:59 pm

2 stops22h 59m

$1,311

MiamiSydney

MIA - SYD

MIASYD

Miami

mié. 11/26

4:47 pm-7:55 pm

2 stops35h 08m

Sydney Kingsford Smith

dom. 12/14

9:45 am-10:05 pm

2 stops28h 20m

$1,330

MiamiCairns

MIA - CNS

MIACNS

Miami

jue. 10/30

7:35 pm-11:35 am

2 stops26h 00m

Cairns

jue. 11/6

12:35 pm-9:16 pm

2 stops23h 41m

$1,334

MiamiSydney

MIA - SYD

MIASYD

Miami

mié. 11/26

5:30 pm-2:50 pm

2 stops29h 20m

Sydney Kingsford Smith

dom. 12/14

2:05 pm-2:12 pm

1 stop40h 07m

$1,342

MiamiCoolangatta

MIA - OOL

MIAOOL

Miami

dom. 10/26

6:25 am-9:45 am

2 stops37h 20m

Coolangatta Gold Coast

dom. 11/2

10:55 am-4:36 pm

2 stops43h 41m

$1,389

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 60 results
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Best time to book a flight from Key Largo to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

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

Currently, March is the cheapest month in which you can book a flight from Key Largo to Australia (average of $1,032). Flying from Key Largo to Australia in December is currently the most expensive (average of $1,627). 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 AU?

Find hourly flight availability from Key Largo to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 15, 2025.

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

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated septiembre 15, 2025.
See what other customers who have flown with Fiji Airways, Qantas Airways, and United Airlines from Key Largo to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Fiji Airways
8.0
Very good
205 reviews
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Qantas Airways
7.5
Good
905 reviews
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
United Airlines
7.4
Good
8,929 reviews
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
American Airlines
7.2
Good
10,000 reviews
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Air Canada
7.1
Good
10,000 reviews
Fiji Airways
8.0
Very good
205 reviews

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Related info for your journey

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

  • How long is the flight from Key Largo to Australia?

    Departing from Key Largo to Australia will take you 23h 25m. There are 9328 mi between Key Largo and Australia. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Key Largo to Australia?

    The most popular flight routes from Key Largo to Australia are Miami - Sydney Kingsford Smith, Miami - Melbourne and Miami - Brisbane.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Key Largo to Australia (average of $1,032). Flying from Key Largo to Australia in December is currently the most expensive (average of $1,627). 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

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Key Largo to Australia

Discover the top 7 airlines that operate flights from Key Largo to Australia. 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$413Average$1,113FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$850Average$1,458FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$866Average$1,416FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$946Average$1,873FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$946Average$1,250FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,047Average$1,930FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,081Average$1,556FlexibilityNo cancel feeOn-time78%

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