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Cheap flights from Australia to Key Largo from $847

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 27 November 2025.

Thu 4/1211:20SYD - MIA
2 stops51h 09mAir Canada
Thu 11/1208:00MIA - SYD
2 stops33h 35mAir Canada
Deal found 26/11$1,236
Fri 5/1211:20SYD - MIA
2 stops51h 09mAir Canada
Mon 15/1218:40MIA - SYD
1 stop44h 15mAir Canada
Deal found 25/11$1,288
Fri 5/1211:20SYD - MIA
1 stop23h 49mQantas Airways
Mon 15/1217:35MIA - SYD
1 stop23h 25mQantas Airways
Deal found 25/11$1,571
Thu 27/1111:20SYD - MIA
2 stops23h 10mAmerican Airlines
Wed 10/1207:05MIA - SYD
1 stop33h 55mAmerican Airlines
Deal found 25/11$1,581
Mon 1/1211:20SYD - MIA
1 stop22h 49mAmerican Airlines
Tue 9/1213:45MIA - SYD
1 stop27h 15mAmerican Airlines
Deal found 26/11$1,590
Thu 27/1111:20SYD - MIA
2 stops25h 09mBritish Airways
Wed 10/1213:40MIA - SYD
2 stops25h 45mBritish Airways
Deal found 25/11$1,591
Mon 1/1214:05SYD - MIA
1 stop22h 54mMultiple Airlines
Sun 14/1217:35MIA - SYD
1 stop23h 25mMultiple Airlines
Deal found 26/11$1,597
Mon 1/1211:20SYD - MIA
2 stops26h 38mUnited Airlines
Tue 9/1216:42MIA - SYD
2 stops24h 23mUnited Airlines
Deal found 26/11$1,602
Thu 4/1211:20SYD - MIA
1 stop23h 49mQantas Airways
Thu 11/1213:35MIA - SYD
1 stop25h 20mQantas Airways
Deal found 26/11$1,650
Thu 4/1211:20SYD - MIA
2 stops25h 06mAmerican Airlines
Thu 8/107:30MIA - SYD
1 stop33h 30mAmerican Airlines
Deal found 25/11$1,651
Thu 4/1211:20SYD - MIA
2 stops24h 30mAmerican Airlines
Thu 11/1215:32MIA - SYD
1 stop23h 23mAmerican Airlines
Deal found 26/11$1,662
Mon 8/1219:40BNE - MIA
1 stop33h 16mQantas Airways
Tue 6/117:55MIA - BNE
1 stop44h 05mQantas Airways
Deal found 26/11$1,693

Cheap 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 27 November 2025.

Round-trip from

$1,222

One-way from

$847

Popular in

December

Cheapest in

March

Average price

$1,897
Air Canada
  • Air Canada
  • 24/2-17/3
  • 4 total stops
  • 60h 44m total
  • Australia to Key Largo
Search Deals
22/1
  • 22/1
  • 3 total stops
  • 50h 52m total
  • Australia to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($484 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($104 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 27 November 2025.
Use the filters below to find and compare flights from Australia to Key Largo that are best for you.

Fly from

Australia

Fly to

Key Largo

Route

Depart

Return

Price

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 17/2

11:20-22:29

2 stops51h 09m

Miami

Sat 7/3

18:15-08:35

2 stops46h 20m

$1,288

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 17/2

11:20-11:39

2 stops40h 19m

Miami

Fri 6/3

18:40-13:40

2 stops27h 00m

$1,318

BrisbaneMiami

BNE - MIA

BNEMIA

Brisbane

Sun 18/1

10:45-11:39

2 stops39h 54m

Miami

Sat 7/2

18:40-08:45

1 stop23h 05m

$1,361

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 30/1

11:20-22:29

2 stops51h 09m

Miami

Tue 3/2

18:15-09:35

2 stops47h 20m

$1,382

BrisbaneMiami

BNE - MIA

BNEMIA

Brisbane

Sat 17/1

10:45-22:29

2 stops26h 44m

Miami

Sat 7/2

18:40-08:45

1 stop23h 05m

$1,393

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 17/2

11:20-11:39

3 stops40h 19m

Miami

Tue 10/3

18:15-08:35

2 stops47h 20m

$1,394

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 24/2

17:45-05:39

1 stop27h 54m

Miami

Tue 17/3

16:00-09:00

1 stop26h 00m

$1,507

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 17/2

11:20-19:10

1 stop23h 50m

Miami

Tue 10/3

19:40-09:00

1 stop22h 20m

$1,521

PerthMiami

PER - MIA

PERMIA

Perth

Tue 3/2

16:45-17:39

2 stops37h 54m

Miami

Wed 18/2

18:40-21:35

2 stops37h 55m

$1,550

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 17/2

11:20-19:26

2 stops24h 06m

Miami

Tue 10/3

19:40-09:00

1 stop22h 20m

$1,576

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 60 results
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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 $769). Flying from Australia to Key Largo in July is currently the most expensive (average of $1,371). 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 AU to KE9?

Find hourly flight availability from Australia to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 November 2025.

It’s typically best to fly out from Australia to Key Largo in the evening. Doing so could potentially save you 10% on the flight price compared to flying at midday, which is usually more expensive.

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

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

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

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 27 November 2025.
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
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before boarding.
Air New Zealand
8.0
Very Good
537 reviews
Air New Zealand
8.0
Very Good
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before boarding.
Qantas Airways
7.5
Good
946 reviews
Air New Zealand
8.0
Very Good
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before boarding.
Qatar Airways
7.4
Good
3,677 reviews
Air New Zealand
8.0
Very Good
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before boarding.
United Airlines
7.4
Good
9,050 reviews
Air New Zealand
8.0
Very Good
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before boarding.
Air Canada
7.1
Good
10,481 reviews
Air New Zealand
8.0
Very Good
537 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.5

Comfort

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - WRE

The seat I sat in the Auckland Airport at A waiting to board gate 42. Not far from the check in desk was dripping rain on me. When I looked up you could see on the beam discoloured drips. I forgot to say something to someone before 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 28h 34m. There are 14734 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 $1,024. Users have also found prices from $1,050 and $1,657 on Air Canada and Qantas Airways, respectively.

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

    Most travellers choose Sydney Kingsford Smith - Miami, Melbourne - Miami or Brisbane - 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 $769). Flying from Australia to Key Largo in July is currently the most expensive (average of $1,371). 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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Alternative routes for Australia to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Australia to Key Largo

Discover the top 9 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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,004Average$2,081FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$1,146Average$1,210FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air New ZealandCheapest$1,169Average$1,879FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Air CanadaCheapest$1,249Average$1,966FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,493Average$2,639FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Virgin AustraliaCheapest$1,565Average$2,926FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
American AirlinesCheapest$1,704Average$2,489FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Japan AirlinesCheapest$1,928Average$2,517FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Qatar AirwaysCheapest$2,061Average$2,514FlexibilityNo 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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