Australia

$493+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
Mar 7 — Mar 141
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Cheap 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 February 5, 2026.

This oojo deal was found by Cheapflights users on 2/2. 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.
Wed 2/113:55 pm
MIA
-
MEL
1 stop25h 35m
Qantas Airways
Wed 2/186:45 am
MEL
-
MIA
2 stops28h 08m
Qantas Airways
Deal found 2/2$937
This oojo deal was found by Cheapflights users on 2/2. 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.
Tue 2/33:54 pm
MIA
-
MEL
2 stops31h 41m
Qantas Airways
Tue 2/1012:00 pm
MEL
-
MIA
1 stop23h 40m
Qantas Airways
Deal found 2/2$938
This oojo deal was found by Cheapflights users on 2/5. 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.
Wed 2/113:55 pm
MIA
-
SYD
1 stop25h 05m
Qantas Airways
Wed 2/187:05 am
SYD
-
MIA
2 stops29h 23m
Qantas Airways
Deal found 2/5$941
This oojo deal was found by Cheapflights users on 2/4. 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.
Thu 2/57:55 pm
MIA
-
SYD
2 stops26h 55m
Qantas Airways
Sat 2/1411:20 am
SYD
-
MIA
1 stop27h 01m
Qantas Airways
Deal found 2/4$952
This oojo deal was found by Cheapflights users on 2/3. 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.
Thu 2/57:55 pm
MIA
-
SYD
2 stops26h 55m
Qantas Airways
Tue 2/1711:20 am
SYD
-
MIA
1 stop23h 33m
Qantas Airways
Deal found 2/3$953
This oojo deal was found by Cheapflights users on 2/3. 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.
Sat 2/287:40 pm
MIA
-
MEL
2 stops44h 40m
Qantas Airways
Mon 3/912:00 pm
MEL
-
MIA
1 stop21h 53m
Qantas Airways
Deal found 2/3$955
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:00 am
MIA
-
SYD
1 stop35h 00m
Qantas Airways
Tue 2/177:05 am
SYD
-
MIA
2 stops29h 23m
Qantas Airways
Deal found 2/4$967
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:55 pm
MIA
-
SYD
1 stop25h 05m
Qantas Airways
Wed 2/187:05 am
SYD
-
MIA
2 stops27h 48m
Qantas Airways
Deal found 2/5$972
This oojo deal was found by Cheapflights users on 2/2. 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.
Mon 3/26:00 am
MIA
-
SYD
2 stops46h 50m
Qantas Airways
Mon 3/911:20 am
SYD
-
MIA
1 stop22h 33m
Qantas Airways
Deal found 2/2$978
This oojo deal was found by Cheapflights users on 2/2. 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.
Sat 2/219:50 pm
MIA
-
MEL
2 stops56h 55m
Qantas Airways
Sat 2/2812:00 pm
MEL
-
MIA
1 stop33h 40m
Qantas Airways
Deal found 2/2$981
This oojo deal was found by Cheapflights users on 2/4. 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.
Sat 2/286:00 am
MIA
-
SYD
2 stops57h 35m
Qantas Airways
Sat 3/711:20 am
SYD
-
MIA
1 stop21h 34m
Qantas Airways
Deal found 2/4$984
This Air Canada deal was found by Cheapflights users on 2/3. 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.
Fri 4/108:00 am
MIA
-
BNE
2 stops33h 05m
Air Canada
Tue 4/2110:00 am
BNE
-
MIA
2 stops39h 27m
Air Canada
Deal found 2/3$991

Find 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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$955
(oojo)

One-way from

$493
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$1,049
Provider with most accurate pricing for Miami-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Miami-Sydney Kingsford Smith flights.
From Key Largo to Australia
One-way flight from Key Largo to Australia
Highest demand for flights based on searches. 17% potential increase in price ($288 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($71 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 5, 2026.
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

MiamiMelbourne

MIA - MEL

MIAMEL

Miami

Sat 2/28

7:40 pm-8:20 am

2 stops44h 40m

Melbourne

Mon 3/9

12:00 pm-6:53 pm

1 stop21h 53m

$955

MiamiBrisbane

MIA - BNE

MIABNE

Miami

Fri 4/10

8:00 am-7:05 am

2 stops33h 05m

Brisbane

Tue 4/21

10:00 am-11:27 am

2 stops39h 27m

$991

MiamiMelbourne

MIA - MEL

MIAMEL

Miami

Mon 3/16

3:32 pm-10:45 pm

2 stops40h 13m

Melbourne

Sun 3/22

12:00 pm-9:23 pm

1 stop24h 23m

$991

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 3/3

5:30 pm-7:35 am

2 stops46h 05m

Sydney Kingsford Smith

Tue 3/10

11:20 am-6:53 pm

1 stop22h 33m

$1,009

MiamiSydney

MIA - SYD

MIASYD

Miami

Sun 2/22

6:31 pm-9:00 am

1 stop22h 29m

Sydney Kingsford Smith

Sun 3/8

1:05 pm-6:45 pm

1 stop21h 40m

$1,042

MiamiSydney

MIA - SYD

MIASYD

Miami

Mon 3/16

6:31 pm-9:00 am

1 stop23h 29m

Sydney Kingsford Smith

Mon 3/23

11:20 am-8:10 pm

1 stop23h 50m

$1,048

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 3/4

3:32 pm-6:55 am

1 stop23h 23m

Sydney Kingsford Smith

Wed 3/11

11:20 am-6:53 pm

1 stop22h 33m

$1,050

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 3/25

3:32 pm-6:55 am

1 stop24h 23m

Sydney Kingsford Smith

Mon 3/30

6:50 pm-5:40 am

1 stop25h 50m

$1,053

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 3/4

11:40 am-6:55 am

1 stop27h 15m

Sydney Kingsford Smith

Tue 3/17

11:20 am-6:53 pm

1 stop22h 33m

$1,053

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 2/25

3:10 pm-9:00 am

2 stops25h 50m

Sydney Kingsford Smith

Wed 3/4

11:20 am-6:30 pm

2 stops23h 10m

$1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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 $979). 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.

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 February 5, 2026.
See what other customers who have flown with Fiji Airways, Delta, and Qantas Airways 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.

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

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

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

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

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

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

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

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

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

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

Crew

8.5

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.4

Overall

8.0

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 29h 38m. There are 10047 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 ($434), Fiji Airways ($537), and Qantas Airways ($553).

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

  • 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 $979). 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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$1,110FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$850Average$1,460FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$859Average$1,366FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$946Average$1,016FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$969Average$1,713FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,081Average$1,567FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,118Average$1,596FlexibilityNo cancel feeOn-time71%

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