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Cheap flights from Australia to Key Largo from $684

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
11 May — 18 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from Australia to Key Largo
Explore the most affordable flight options available from Australia to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 April 2026.

Wed 22/406:00
SYD
-
MIA
3 stops42h 12m
Multiple Airlines
Sat 25/408:42
MIA
-
SYD
3 stops37h 08m
Multiple Airlines
Deal found 8/4$1,514
Fri 15/513:30
MEL
-
MIA
3 stops54h 08m
Multiple Airlines
Sat 30/509:15
MIA
-
MEL
3 stops36h 45m
Multiple Airlines
Deal found 10/4$1,534
Sun 10/513:30
MEL
-
MIA
3 stops54h 08m
Multiple Airlines
Sun 31/509:15
MIA
-
MEL
3 stops37h 10m
Multiple Airlines
Deal found 7/4$1,605
Tue 12/513:15
SYD
-
MIA
3 stops38h 05m
Multiple Airlines
Tue 19/511:23
MIA
-
SYD
3 stops44h 47m
Multiple Airlines
Deal found 6/4$1,633
Sun 24/506:00
SYD
-
MIA
3 stops61h 33m
Multiple Airlines
Sun 31/508:10
MIA
-
SYD
3 stops48h 00m
Multiple Airlines
Deal found 9/4$1,715
Mon 11/513:15
SYD
-
MIA
3 stops54h 23m
Multiple Airlines
Mon 18/506:00
MIA
-
SYD
3 stops40h 05m
Multiple Airlines
Deal found 10/4$1,736
Mon 27/417:50
SYD
-
MIA
2 stops27h 32m
Multiple Airlines
Sun 10/506:00
MIA
-
SYD
2 stops35h 30m
Multiple Airlines
Deal found 10/4$1,813
Sun 3/509:10
SYD
-
MIA
2 stops29h 39m
Multiple Airlines
Tue 12/508:10
MIA
-
SYD
2 stops32h 55m
Multiple Airlines
Deal found 7/4$1,825
Tue 5/517:50
SYD
-
MIA
2 stops36h 37m
Multiple Airlines
Tue 12/511:23
MIA
-
SYD
2 stops30h 07m
Multiple Airlines
Deal found 7/4$1,861
Mon 25/509:10
SYD
-
MIA
2 stops34h 23m
Multiple Airlines
Mon 1/609:15
MIA
-
SYD
2 stops32h 15m
Multiple Airlines
Deal found 10/4$1,902
Tue 26/513:15
SYD
-
MIA
3 stops30h 18m
Multiple Airlines
Sat 30/509:15
MIA
-
SYD
3 stops36h 35m
Multiple Airlines
Deal found 7/4$1,907
Thu 30/409:15
SYD
-
MIA
2 stops38h 03m
Delta
Wed 13/516:05
MIA
-
SYD
2 stops24h 45m
Delta
Deal found 8/4$1,953

Find flight deals from Australia to Key Largo

Keep the following information in mind while searching for Australia to Key Largo flight deals. Data was last updated 11 April 2026.

Round-trip from

$1,514

One-way from

$684

Popular in

January

Cheapest in

February

Average price

$2,658
22/4-25/4
  • 22/4-25/4
  • 6 total stops
  • 79h 20m total
  • Australia to Key Largo
Search Deals
8/5
  • 8/5
  • 3 total stops
  • 54h 38m total
  • Australia to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($370 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($109 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Australia to Key Largo 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 647,157 searches. Data last updated 11 April 2026.
Use the filters below to find and compare flights from Australia to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 11/5

13:15-05:38

3 stops54h 23m

Miami

Mon 18/5

06:00-12:05

3 stops40h 05m

$1,736

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 27/4

09:15-09:18

2 stops38h 03m

Miami

Sun 10/5

18:30-06:50

1 stop22h 20m

$1,965

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 30/4

09:15-20:48

2 stops25h 33m

Miami

Wed 13/5

07:39-06:50

1 stop33h 11m

$1,998

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 11/5

09:15-17:06

1 stop21h 51m

Miami

Mon 18/5

18:30-06:50

1 stop22h 20m

$2,002

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 24/5

09:15-06:55

1 stop35h 40m

Miami

Sun 31/5

06:33-06:50

2 stops34h 17m

$2,060

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 23/5

09:15-23:11

2 stops27h 56m

Miami

Sat 30/5

06:33-06:50

2 stops34h 17m

$2,087

MelbourneMiami

MEL - MIA

MELMIA

Melbourne

Sun 10/5

10:00-19:58

2 stops23h 58m

Miami

Sun 31/5

19:39-07:50

2 stops46h 11m

$2,186

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 30/4

09:30-22:09

2 stops26h 39m

Miami

Wed 13/5

12:50-06:55

3 stops28h 05m

$2,412

MelbourneMiami

MEL - MIA

MELMIA

Melbourne

Mon 4/5

22:45-18:10

1 stop33h 25m

Miami

Wed 6/5

20:30-17:15

1 stop30h 45m

$2,459

MelbourneMiami

MEL - MIA

MELMIA

Melbourne

Mon 8/6

08:35-15:47

3 stops45h 12m

Miami

Mon 13/7

08:48-10:55

2 stops36h 07m

$2,665

Flights are sorted by cheapest return flights first.

Deals found on 10/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Australia to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Australia with our price prediction graph.
Estimated return 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 Australia to Key Largo

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

Currently, September is the cheapest month in which you can book a flight from Australia to Key Largo (average of $650). Flying from Australia to Key Largo in July is currently the most expensive (average of $1,258). 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 Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated 11 April 2026.
Check out reviews from past customers who have flown with Air New Zealand,Qantas Airways, andQatar Airways from Australia to Key Largo 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 New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
627 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,018 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qatar Airways
7.4
Good
3,727 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
American Airlines
7.1
Good
11,569 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
10,915 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Overall

8.0

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Related info for your journey

Find useful and relevant information for your journey from Australia to Key Largo. 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 Australia to Key Largo?

    Departing from Australia to Key Largo will take you 33h 25m. There are 15583 km between Australia and Key Largo. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    For one-way options, check prices for Air New Zealand. According to our data, you can fly for as low as $721. Users have also found prices from $800 and $990 on Qantas Airways and Air Canada, respectively.

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

    Most travellers choose Melbourne - Miami, Sydney Kingsford Smith - Miami or Perth - Miami when deciding on the best route from Australia to Key Largo.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Australia to Key Largo (average of $650). Flying from Australia to Key Largo in July is currently the most expensive (average of $1,258). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Australia to Key Largo

Discover the top 7 airlines that operate flights from Australia to Key Largo. 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 647,157 searches. Data last updated 11 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$604Average$1,776FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$620Average$2,207FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,013Average$1,659FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,076Average$1,694FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,280Average$2,092FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$1,812Average$2,438FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Qatar AirwaysCheapest$1,895Average$2,341FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Key Largo?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Australia to Key Largo. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Australia to Key Largo?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Key Largo from Australia.

Can Cheapflights find flights from Australia to Key Largo with no change fees?

Certainly. Search results for flights to Key Largo from Australia shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Australia to Key Largo become cheaper?

Not ready to book yet? You can track prices for flights from Australia to Key Largo on Cheapflights with our Price Alert feature and get notified when better prices are available.

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