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Cheap flights from Sydney to Key Largo from $1,035

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Key Largo
Explore the most affordable flight options available from Sydney to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 March 2026.

Mon 27/409:20
SYD
-
MIA
1 stop22h 10m
Air Canada
Mon 11/508:15
MIA
-
SYD
2 stops33h 05m
Air Canada
Deal found 20/3$1,345
Wed 11/1111:20
SYD
-
MIA
2 stops51h 09m
Air Canada
Thu 19/1108:00
MIA
-
SYD
2 stops33h 35m
Air Canada
Deal found 20/3$1,351
Wed 6/509:20
SYD
-
MIA
1 stop21h 52m
Air Canada
Wed 13/508:15
MIA
-
SYD
2 stops33h 05m
Air Canada
Deal found 22/3$1,360
Tue 10/1111:20
SYD
-
MIA
2 stops27h 09m
Air Canada
Wed 18/1121:05
MIA
-
SYD
2 stops44h 30m
Air Canada
Deal found 19/3$1,364
Mon 4/509:20
SYD
-
MIA
1 stop21h 52m
Air Canada
Mon 11/508:15
MIA
-
SYD
2 stops33h 05m
Air Canada
Deal found 20/3$1,367
Mon 20/409:20
SYD
-
MIA
1 stop22h 22m
Air Canada
Sun 3/518:00
MIA
-
SYD
2 stops47h 20m
Air Canada
Deal found 23/3$1,372
Mon 18/509:20
SYD
-
MIA
1 stop21h 52m
Air Canada
Sun 31/518:00
MIA
-
SYD
2 stops47h 20m
Air Canada
Deal found 23/3$1,377
Mon 18/509:20
SYD
-
MIA
1 stop21h 52m
Air Canada
Wed 27/508:05
MIA
-
SYD
3 stops33h 15m
Air Canada
Deal found 21/3$1,380
Wed 6/507:00
SYD
-
MIA
2 stops24h 12m
Air Canada
Wed 27/508:05
MIA
-
SYD
3 stops33h 15m
Air Canada
Deal found 21/3$1,392

Find flight deals from Sydney to Key Largo

Keep the following information in mind while searching for Sydney to Key Largo flight deals. Data was last updated 24 March 2026.

Round-trip from

$1,345

One-way from

$1,035

Popular in

January

Cheapest in

February

Average price

$1,724
Air Canada
  • Air Canada
  • 27/4-11/5
  • 3 total stops
  • 55h 15m total
  • Sydney to Key Largo
Search Deals
27/4
  • 27/4
  • 3 total stops
  • 46h 17m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($373 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($110 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney 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 24 March 2026.
Use the filters below to find and compare flights from Sydney 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 18/5

07:00-17:12

2 stops24h 12m

Miami

Wed 27/5

08:05-07:20

3 stops33h 15m

$1,392

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 20/4

09:20-17:42

1 stop22h 22m

Miami

Sun 3/5

07:10-07:20

2 stops58h 10m

$1,427

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 3/5

09:20-17:12

1 stop21h 52m

Miami

Sun 10/5

18:00-07:20

3 stops47h 20m

$1,457

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 18/5

17:50-05:42

1 stop25h 52m

Miami

Wed 27/5

14:24-07:30

1 stop27h 06m

$1,724

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 22/6

09:20-20:48

2 stops49h 28m

Miami

Wed 1/7

18:00-07:20

2 stops47h 20m

$1,771

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 22/6

10:20-07:39

1 stop35h 19m

Miami

Wed 1/7

16:53-07:00

2 stops24h 07m

$1,781

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 7/5

09:15-17:06

1 stop21h 51m

Miami

Thu 14/5

10:35-06:50

2 stops30h 15m

$1,844

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 16/4

09:15-05:27

2 stops34h 12m

Miami

Thu 23/4

18:30-06:50

1 stop22h 20m

$1,860
Fastest return journey

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 14/7

10:20-17:29

1 stop21h 09m

Miami

Sat 25/7

12:29-06:55

2 stops28h 26m

$1,873

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 21/8

10:20-18:58

1 stop22h 38m

Miami

Thu 27/8

15:59-06:55

2 stops48h 56m

$1,927

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Sydney 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 Sydney to Key Largo

How far ahead should I book a flight from Sydney to Key Largo?

Use this chart to determine the optimal time to book a return flight from Sydney to Key Largo. Price data was last updated on 13 March 2026.

The price you pay for your flight from Sydney to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Sydney to Key Largo (average of $1,005). Flying from Sydney to Key Largo in April is currently the most expensive (average of $1,533). 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.

How much does it cost for a return flight from Sydney to Key Largo?

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 24 March 2026.
Read reviews from past customers who have flown with Air New Zealand,Qantas Airways, andUnited Airlines from Sydney to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Air New Zealand
8.0
Very Good
619 reviews
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Qantas Airways
7.5
Good
1,009 reviews
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
United Airlines
7.4
Good
9,471 reviews
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
American Airlines
7.1
Good
11,491 reviews
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Air Canada
7.1
Good
10,837 reviews
Air New Zealand
8.0
Very Good
619 reviews
Check prices

Food

7.4

Crew

8.5

Comfort

8.0

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.

Related info for your journey

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

  • What airport do you fly from for flights from Sydney to Key Largo?

    Sydney Kingsford Smith (SYD) is the airport you will fly out of if you book a flight from Sydney to Key Largo. You should not have trouble finding flights to Key Largo from Kingsford Smith; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Sydney airport to Key Largo. It is only a 7.5 km journey to Kingsford Smith (SYD) from Sydney’s city centre.

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

    Air Canada and Qantas Airways can get you from Sydney to Key Largo in just under 22h 22m. Your travel time can differ by up to 3h 30m. There are 15012 km between Sydney 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 Sydney to Key Largo one-way?

    The cheapest airline one-way is Air New Zealand, with whom users have recently found tickets for as low as $814. However, be on the lookout for offers from Air Canada and Qantas Airways, as they are both options that can get you from Sydney to Key Largo for a low price.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Sydney to Key Largo (average of $1,005). Flying from Sydney to Key Largo in April is currently the most expensive (average of $1,533). 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 6 airlines flying from Sydney to Key Largo

Discover the top 6 airlines that operate flights from Sydney 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 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,024Average$1,681FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,087Average$1,669FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
United AirlinesCheapest$1,144Average$1,845FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,520Average$2,179FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,585Average$1,852FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$1,832Average$2,480FlexibilityNo cancel feeOn-timeN/A
Search Delta 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 Sydney to Key Largo?

Cheapflights helps you search for flights from Sydney to Key Largo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Sydney to Key Largo.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Sydney to Key Largo flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Key Largo from Sydney today and book when prices fit your budget.

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