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Cheap flights from Sydney to Key Largo from $1,014

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
19 Mar — 26 Mar1
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 17 February 2026.

Wed 4/317:45
SYD
-
MIA
2 stops32h 43m
Multiple Airlines
Wed 18/305:05
MIA
-
SYD
2 stops36h 55m
Multiple Airlines
Deal found 15/2$1,651
Mon 9/311:20
SYD
-
MIA
2 stops23h 25m
American Airlines
Mon 16/313:40
MIA
-
SYD
1 stop28h 20m
American Airlines
Deal found 14/2$1,731
Wed 6/509:20
SYD
-
MIA
1 stop21h 52m
Air Canada
Tue 26/518:00
MIA
-
SYD
2 stops47h 20m
Air Canada
Deal found 13/2$1,741
Mon 23/211:20
SYD
-
MIA
2 stops23h 57m
American Airlines
Sun 8/319:41
MIA
-
SYD
1 stop22h 19m
American Airlines
Deal found 14/2$1,743
Wed 4/311:20
SYD
-
MIA
1 stop25h 08m
American Airlines
Wed 18/313:40
MIA
-
SYD
1 stop28h 20m
American Airlines
Deal found 13/2$1,753
Mon 23/214:15
SYD
-
MIA
1 stop32h 20m
Delta
Sun 8/310:26
MIA
-
SYD
2 stops28h 39m
Delta
Deal found 14/2$1,758
Thu 26/214:15
SYD
-
MIA
1 stop32h 20m
Delta
Wed 11/313:13
MIA
-
SYD
2 stops27h 12m
Delta
Deal found 16/2$1,760
Tue 28/409:55
SYD
-
MIA
2 stops35h 59m
Air New Zealand
Thu 7/516:52
MIA
-
SYD
2 stops25h 53m
Air New Zealand
Deal found 13/2$1,768

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 17 February 2026.

Round-trip from

$1,651

One-way from

$1,014

Popular in

January

Cheapest in

August

Average price

$1,601
4/3-18/3
  • 4/3-18/3
  • 4 total stops
  • 69h 38m total
  • Sydney to Key Largo
Search Deals
13/5
  • 13/5
  • 3 total stops
  • 45h 08m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($352 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($100 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 17 February 2026.
Use the filters below to find and compare flights from Sydney to Key Largo that are best for you.

Fly from

Sydney

Fly to

Key Largo

Route

Depart

Return

Price

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 9/3

11:20-18:53

1 stop22h 33m

Miami

Mon 16/3

08:00-09:00

1 stop34h 00m

$1,731

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 16/3

11:20-21:23

1 stop25h 03m

Miami

Mon 23/3

19:41-09:00

1 stop22h 19m

$1,753

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 4/3

11:20-20:28

1 stop25h 08m

Miami

Wed 18/3

13:40-09:00

1 stop28h 20m

$1,753

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 4/3

10:40-17:52

1 stop23h 12m

Miami

Wed 18/3

12:01-07:25

2 stops28h 24m

$1,760

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 9/3

10:40-00:52

2 stops29h 12m

Miami

Mon 16/3

14:39-07:25

2 stops25h 46m

$1,760

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 25/3

11:20-19:45

2 stops23h 25m

Miami

Fri 3/4

07:00-08:05

1 stop34h 05m

$1,808

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 19/5

13:00-07:32

3 stops56h 32m

$1,018

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 13/3

06:20-00:16

3 stops32h 56m

$1,020

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 18/5

11:00-00:49

3 stops51h 49m

$1,022

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 17/5

13:00-18:08

3 stops43h 08m

$1,027

Flights are sorted by cheapest return flights first.

Deals found on 15/2

Showing 1-10 of 16 results
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 February 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 $993). Flying from Sydney to Key Largo in April is currently the most expensive (average of $1,512). 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 17 February 2026.
Read reviews from past customers who have flown with Air New Zealand, Delta, andQantas Airways 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
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very Good
585 reviews
Air New Zealand
8.0
Very Good
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Delta
7.9
Good
8,205 reviews
Air New Zealand
8.0
Very Good
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
991 reviews
Air New Zealand
8.0
Very Good
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,308 reviews
Air New Zealand
8.0
Very Good
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,725 reviews
Air New Zealand
8.0
Very Good
585 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

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?

    American Airlines can get you from Sydney to Key Largo in just under 22h 33m. Your travel time can differ by up to . There are 15012 km between Sydney and Key Largo.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $350. However, be on the lookout for offers from Air New Zealand and Air Canada, 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 $993). Flying from Sydney to Key Largo in April is currently the most expensive (average of $1,512). 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 17 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,012Average$1,656FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest$1,106Average$1,478FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$1,130Average$1,794FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air New ZealandCheapest$1,443Average$1,665FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,471Average$2,060FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,513Average$2,416FlexibilityNo cancel feeOn-time74%
Search Qantas 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 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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