Cheap flights from Sydney to Key Largo from $757

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
30 Aug — 6 Sep1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Key Largo are usually found in March or August, booked 72 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap 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 25 August 2025.

Round-trip from

$1,579

One-way from

$777

Popular in

December

Cheapest in

March

Average price

$1,815
Air New Zealand
  • Air New Zealand
  • 7/11-24/11
  • 4 total stops
  • 60h 30m total
  • Sydney to Key Largo
15/10
  • 15/10
  • 3 total stops
  • 46h 11m total
  • Sydney to Key Largo
Highest demand for flights based on searches. 15% potential increase in price ($605 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease ($131 potential savings vs. average return price).
Average for round-trip flights in August 2025

Find flight deals from Sydney to Key Largo

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 25 August 2025.

Fri 7/1111:45SYD - MIA
2 stops26h 15mAir New Zealand
Mon 24/1106:30MIA - SYD
2 stops34h 15mAir New Zealand
Deal found 24/8$1,579
Sat 1/1121:40SYD - MIA
2 stops36h 06mAlaska Airlines
Fri 14/1118:46MIA - SYD
2 stops32h 59mAlaska Airlines
Deal found 23/8$1,664
Sat 8/1121:40SYD - MIA
2 stops36h 06mAlaska Airlines
Mon 24/1118:30MIA - SYD
2 stops57h 15mAlaska Airlines
Deal found 24/8$1,710
Fri 17/1021:40SYD - MIA
2 stops34h 49mAlaska Airlines
Mon 20/1018:46MIA - SYD
2 stops57h 59mAlaska Airlines
Deal found 25/8$1,740
Mon 29/909:10SYD - MIA
2 stops23h 16mAmerican Airlines
Wed 15/1016:51MIA - SYD
1 stop24h 14mAmerican Airlines
Deal found 23/8$1,746
Wed 17/909:10SYD - MIA
1 stop25h 09mAmerican Airlines
Sun 19/1014:52MIA - SYD
1 stop26h 13mAmerican Airlines
Deal found 24/8$1,756
Mon 22/909:10SYD - MIA
1 stop20h 33mAmerican Airlines
Mon 29/910:06MIA - SYD
1 stop30h 59mAmerican Airlines
Deal found 25/8$1,775

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 25 August 2025.
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

Fri 7/11

11:45-22:00

2 stops26h 15m

Miami

Mon 24/11

06:30-08:45

2 stops34h 15m

$1,579

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 18/9

21:40-17:45

2 stops34h 05m

Miami

Sun 21/9

18:45-19:45

2 stops35h 00m

$1,662

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 1/11

21:40-18:46

2 stops36h 06m

Miami

Fri 14/11

18:46-19:45

2 stops32h 59m

$1,664

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 8/11

21:40-17:46

2 stops36h 06m

Miami

Mon 24/11

18:30-19:45

2 stops57h 15m

$1,710

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 17/10

21:40-17:29

2 stops34h 49m

Miami

Mon 20/10

18:46-19:45

2 stops57h 59m

$1,740

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 29/9

09:10-18:26

2 stops23h 16m

Miami

Wed 15/10

16:51-08:05

1 stop24h 14m

$1,746

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 17/9

09:10-20:19

1 stop25h 09m

Miami

Sun 19/10

16:51-08:05

1 stop24h 14m

$1,756

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 15/9

09:10-18:37

1 stop23h 27m

Miami

Mon 22/9

10:06-07:05

1 stop30h 59m

$1,756

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 17/9

16:20-17:45

2 stops39h 25m

$757

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 15/10

17:20-00:31

3 stops46h 11m

$777

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 15 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 22 August 2025.

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 72 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, March is the cheapest month in which you can book a flight from Sydney to Key Largo (average of $1,268). Flying from Sydney to Key Largo in December is currently the most expensive (average of $2,137). 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 SYD to KE9?

Find hourly flight availability from Sydney 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 25 August 2025.

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 is the cheapest day to fly from Sydney to Key Largo?

Use this chart to determine the cheapest time to fly return from Sydney to Key Largo. Price data was last updated on 13 October 2024.

Travellers seeking maximum savings on their Sydney to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday afternoons 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 25 August 2025.
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.

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
8.0
Very Good

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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 7 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 New Zealand and Alaska Airlines can get you from Sydney to Key Largo in just under 26h 15m. Your travel time can differ by up to 7h 50m. 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.

  • 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, March is the cheapest month in which you can book a flight from Sydney to Key Largo (average of $1,268). Flying from Sydney to Key Largo in December is currently the most expensive (average of $2,137). 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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Top 7 airlines flying from Sydney to Key Largo

Discover the top 7 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 25 August 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,149Average$1,523FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$1,233Average$2,088FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,463Average$1,855FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,500Average$2,584FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Virgin AustraliaCheapest$1,568Average$2,814FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Air New ZealandCheapest$1,674Average$2,004FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,708Average$1,973FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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.

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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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