How long is the flight from Sydney to Key Largo?

Air Canada, Qantas Airways, and United Airlines can get you from Sydney to Key Largo in just under 20h 52m. Your travel time can differ by up to 6h 05m. 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 $792. However, be on the lookout for offers from United Airlines and Qantas Airways, as they are both options that can get you from Sydney to Key Largo for a low price.

In terms of precipitation, rainfall in Key Largo ranges from 41.0 - 252.0 inches per month. September is typically the wettest month, when rainfall can reach 252.0 mm. January is typically the driest time to visit Key Largo when rainfall is around 41.0 mm.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

What are the most popular airlines that fly from Sydney to Key Largo?

The most popular airlines flying from Sydney to Key Largo are Qantas Airways, Air New Zealand and American Airlines. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from SYD to KE9?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sydney to Key Largo as you normally would.

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.

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.

$659+ Cheap Flights from Sydney to Key Largo

Cheap flight deals from Sydney to Key Largo

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 11 September 2026.

Wed 21/1010:20 -

1 stop21h 54m

Tue 24/1108:00 -

2 stops33h 35m

Deal found 11/9$1,274

Mon 5/1010:20 -

2 stops50h 57m

Mon 19/1018:10 -

1 stop23h 10m

Deal found 6/9$1,295

Mon 19/1010:20 -

1 stop21h 54m

Tue 1/608:00 -

2 stops33h 20m

Deal found 10/9$1,316

Wed 14/1010:20 -

2 stops50h 57m

Sun 18/1007:10 -

2 stops58h 10m

Deal found 11/9$1,320

Find flight deals from Sydney to Key Largo

Round-trip from	$1,295
One-way from	$659
Popular in	January
Cheapest in	February
Average price	$1,839

Air Canada
5/10-19/10
3 total stops
74h 07m total
Sydney to Key Largo

Search Deals

4/11-31/12
3 total stops
26h 44m total
Sydney to Key Largo

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($247 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($71 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Thu 17/9

09:10-21:58

1 stop26h 48m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,075

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 3/11

22:10-16:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,120

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 9/11

22:10-16:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,120

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Wed 21/10

15:50-16:40

1 stop39h 50m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,124

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Sun 25/10

15:50-17:25

1 stop40h 35m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,132

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 26/10

22:10-17:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,135

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Sun 1/11

22:10-16:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,148

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Sun 8/11

22:10-16:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,149

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 26/10

22:10-17:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,149

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 27/10

22:10-17:25

1 stop34h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,149

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Showing 1-10 of 21 resultsSorted by cheapest first

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.

SYD-MIA

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

SYD-KE9

SYD-MIA

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

Airfare is below average for this route at the moment.

Sydney to Key Largo flights typically cost between $1,358 and $2,167 in October.
The cheapest return price found within the last 5 days was $1,270 on Air Canada (19 Oct–26 Oct).

Reviews of airlines servicing Key Largo

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

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air New Zealand

8.0

Very Good

669 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Qantas Airways

7.5

Good

1,092 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

United Airlines

7.4

Good

10,197 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

American Airlines

7.1

Good

12,046 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air Canada

7.1

Good

11,611 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Related info for your journey

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, Qantas Airways, and United Airlines can get you from Sydney to Key Largo in just under 20h 52m. Your travel time can differ by up to 6h 05m. 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 $792. However, be on the lookout for offers from United Airlines 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.

See more FAQs

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Top 6 airlines flying from Sydney to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,168	Average$1,737	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,219	Average$1,355	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air New Zealand	Cheapest$1,428	Average$1,622	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Qantas Airways	Cheapest$1,479	Average$2,131	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
American Airlines	Cheapest$1,548	Average$2,013	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Delta	Cheapest$1,666	Average$2,019	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

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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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Cheap flights from Sydney to Key Largo from $659

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Sydney to Key Largo

Cheapest flights from Sydney to Key LargoExplore 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 11 September 2026.

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 11 September 2026.

Best flights from Sydney to Key LargoDiscover carefully curated flight deals from Sydney to Key Largo that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Sydney to Key Largo that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Sydney to Key LargoDiscover last-minute flight deals from Sydney to Key Largo. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Sydney to Key Largo. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Sydney to Key LargoSearch for one-way flight options from Sydney to Key Largo. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from Sydney to Key Largo. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

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Use the filters below to find and compare flights from Sydney to Key Largo that are best for you.

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.

Cheapflights Insights

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

Airfare is below average for this route at the moment.

Sydney to Key Largo flights typically cost between $1,358 and $2,167 in October.The cheapest return price found within the last 5 days was $1,270 on Air Canada (19 Oct–26 Oct).

Reviews of airlines servicing Key Largo

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.

Related info for your journey

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

How long is the flight from Sydney to Key Largo?

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

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

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

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

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.

Alternative routes for Sydney to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Key Largo by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Sydney to Key Largo by cabin class

Find flights from Sydney to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Sydney and Key Largo flights

Browse other Sydney and Key Largo flight options. Last updated on 11 September 2026.

Other flights from Sydney

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Sydney to Key Largo flights

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Top 6 airlines flying from Sydney to Key Largo

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

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

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

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

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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 11 September 2026.

Best flights from Sydney to Key Largo
Discover carefully curated flight deals from Sydney to Key Largo that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Sydney to Key Largo
Discover last-minute flight deals from Sydney to Key Largo. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Sydney to Key Largo
Search for one-way flight options from Sydney to Key Largo. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Sydney to Key Largo flights typically cost between $1,358 and $2,167 in October.
The cheapest return price found within the last 5 days was $1,270 on Air Canada (19 Oct–26 Oct).