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$426+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
nov 30 — dic 71
dom 11/30
dom 12/7
1 adult, Economy
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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 ottobre 31, 2025.

This lol.travel deal was found by Cheapflights users on 10/30. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 11/216:40 pmMIA - BNE
1 stop23h 05mAir Canada
ven 12/510:45 amBNE - MIA
2 stops40h 49mAir Canada
Deal found 10/30$760
This lol.travel deal was found by Cheapflights users on 10/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 11/216:40 pmMIA - BNE
1 stop23h 05mAir Canada
gio 12/410:45 amBNE - MIA
2 stops40h 49mAir Canada
Deal found 10/29$762
This Air Canada deal was found by Cheapflights users on 10/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 11/263:45 pmMIA - BNE
2 stops26h 00mMultiple Airlines
mer 12/310:45 amBNE - MIA
2 stops40h 49mMultiple Airlines
Deal found 10/28$765
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 11/188:00 amMIA - BNE
2 stops33h 45mAir Canada
mar 5/1210:00 amBNE - MIA
2 stops39h 41mAir Canada
Deal found 10/29$766
This Air Canada deal was found by Cheapflights users on 10/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 11/188:00 amMIA - BNE
2 stops33h 45mAir Canada
mar 5/1910:00 amBNE - MIA
2 stops39h 41mAir Canada
Deal found 10/30$769
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 11/278:00 amMIA - BNE
2 stops33h 45mAir Canada
dom 3/810:45 amBNE - MIA
2 stops38h 54mAir Canada
Deal found 10/29$771
This Expedia deal was found by Cheapflights users on 10/28. 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.
mer 11/198:00 amMIA - SYD
2 stops33h 35mAir Canada
mer 11/2611:20 amSYD - MIA
2 stops51h 09mAir Canada
Deal found 10/28$790
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 11/1812:20 pmMIA - BNE
3 stops34h 05mMultiple Airlines
mar 5/1210:00 amBNE - MIA
2 stops39h 41mMultiple Airlines
Deal found 10/29$791
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/26:00 pmMIA - SYD
1 stop23h 15mUnited Airlines
lun 11/1011:50 amSYD - MIA
1 stop24h 02mUnited Airlines
Deal found 10/28$851
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 11/276:00 pmMIA - SYD
1 stop23h 15mUnited Airlines
lun 12/1512:10 pmSYD - MIA
1 stop25h 35mUnited Airlines
Deal found 10/28$854
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 11/276:00 pmMIA - SYD
1 stop23h 15mUnited Airlines
gio 12/411:50 amSYD - MIA
1 stop19h 45mUnited Airlines
Deal found 10/28$857
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 11/279:00 amMIA - SYD
2 stops32h 15mUnited Airlines
lun 12/2211:20 amSYD - MIA
2 stops27h 20mUnited Airlines
Deal found 10/28$859

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 ottobre 31, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$760
(lol.travel)

One-way from

$426
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$1,406
Provider with most accurate pricing for Miami-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Sydney Kingsford Smith flights.
Search Deals
From Key Largo to Australia
Search Deals
One-way flight from Key Largo to Australia
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($426 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($83 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 ottobre 31, 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

gio 11/27

8:00 am-8:45 am

2 stops33h 45m

Brisbane

dom 3/8

10:45 am-10:39 am

2 stops38h 54m

$773

MiamiBrisbane

MIA - BNE

MIABNE

Miami

gio 11/27

12:20 pm-1:25 pm

3 stops34h 05m

Brisbane

dom 3/8

10:45 am-10:39 am

2 stops38h 54m

$796

MiamiBrisbane

MIA - BNE

MIABNE

Miami

gio 11/27

12:25 pm-8:45 am

2 stops53h 20m

Brisbane

lun 3/9

10:45 am-11:26 am

2 stops38h 41m

$798

MiamiBrisbane

MIA - BNE

MIABNE

Miami

ven 11/21

9:05 pm-8:45 am

2 stops68h 40m

Brisbane

gio 12/4

10:45 am-12:34 pm

2 stops40h 49m

$798

MiamiBrisbane

MIA - BNE

MIABNE

Miami

mar 12/2

8:30 am-7:30 am

1 stop32h 00m

Brisbane

mar 5/5

10:30 am-7:20 am

1 stop34h 50m

$843

MiamiBrisbane

MIA - BNE

MIABNE

Miami

mar 11/11

11:55 am-7:30 am

2 stops28h 35m

Brisbane

mer 3/11

10:40 am-11:49 pm

2 stops27h 09m

$843

MiamiBrisbane

MIA - BNE

MIABNE

Miami

mer 11/19

6:00 pm-7:30 am

1 stop22h 30m

Brisbane

mer 5/6

10:30 am-9:50 pm

2 stops25h 20m

$843

MiamiBrisbane

MIA - BNE

MIABNE

Miami

gio 11/27

6:00 pm-7:30 am

1 stop22h 30m

Brisbane

dom 3/8

10:40 am-3:56 pm

1 stop20h 16m

$846

MiamiBrisbane

MIA - BNE

MIABNE

Miami

ven 11/28

8:45 am-7:30 am

1 stop31h 45m

Brisbane

dom 12/7

11:40 am-4:54 pm

3 stops44h 14m

$854

MiamiSydney

MIA - SYD

MIASYD

Miami

lun 11/3

4:50 pm-7:00 am

1 stop22h 10m

Sydney Kingsford Smith

mar 11/18

11:20 am-7:52 pm

2 stops24h 32m

$856

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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, June is the cheapest month in which you can book a flight from Key Largo to Australia (average of $253). Flying from Key Largo to Australia in January is currently the most expensive (average of $902). 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 ottobre 31, 2025.

It’s typically best to fly out from Key Largo to Australia in the morning. Doing so could potentially save you 34% on the flight price compared to flying in the evening, which is usually more expensive.

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

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

Travelers seeking maximum savings on their Key Largo to Australia flight should consider departing on Monday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 ottobre 31, 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
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.0
Very good
208 reviews
Fiji Airways
8.0
Very good
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
925 reviews
Fiji Airways
8.0
Very good
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
8,998 reviews
Fiji Airways
8.0
Very good
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,030 reviews
Fiji Airways
8.0
Very good
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,377 reviews
Fiji Airways
8.0
Very good
208 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

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 22h 10m. 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 cheapest airlines to fly from Key Largo to Australia one-way?

    The cheapest airlines for a one-way flight from Key Largo to Australia are United Airlines ($426), American Airlines ($628), and Qantas Airways ($749).

  • 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 - Melbourne Avalon.

  • 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, June is the cheapest month in which you can book a flight from Key Largo to Australia (average of $253). Flying from Key Largo to Australia in January is currently the most expensive (average of $902). 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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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 ottobre 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$413Average$1,113FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$850Average$1,449FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$864Average$1,414FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$946Average$1,834FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$946Average$1,240FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,047Average$1,921FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,081Average$1,563FlexibilityNo cancel feeOn-time78%

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