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Cheap flights from Sydney to Key Largo from $723

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — MIA
15 Jul — 22 Jul1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Key Largo are usually found in March or February, booked 13 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 10 July 2025.

Round-trip from

$1,705

One-way from

$723

Popular in

December

Cheapest in

March

Average price

$2,255
Air New Zealand
  • Air New Zealand
  • 1/8-15/8
  • 4 total stops
  • 52h 36m total
  • Sydney to Key Largo
Search Deals
15/10
  • 15/10
  • 2 total stops
  • 39h 09m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($481 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($119 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 10 July 2025.

Fri 1/809:55SYD - MIA
2 stops26h 44mAir New Zealand
Fri 15/816:53MIA - SYD
2 stops25h 52mAir New Zealand
Deal found 8/7$1,705
Fri 15/812:10SYD - MIA
2 stops34h 49mAmerican Airlines
Sat 30/822:47MIA - SYD
2 stops42h 18mAmerican Airlines
Deal found 8/7$1,724
Thu 7/809:10SYD - MIA
2 stops25h 35mBritish Airways
Wed 20/814:20MIA - SYD
2 stops26h 45mBritish Airways
Deal found 9/7$1,730
Sat 23/817:45SYD - MIA
2 stops30h 29mMultiple Airlines
Sat 30/815:15MIA - SYD
2 stops26h 15mMultiple Airlines
Deal found 9/7$1,831
Fri 22/809:10SYD - MIA
1 stop25h 19mIberia
Fri 29/810:04MIA - SYD
1 stop31h 01mIberia
Deal found 8/7$1,903
Sat 1/1110:20SYD - MIA
2 stops27h 09mAir Canada
Sun 30/1108:00MIA - SYD
2 stops33h 35mAir Canada
Deal found 8/7$1,949
Mon 13/1010:25SYD - MIA
1 stop21h 59mDelta
Mon 17/1108:00MIA - SYD
1 stop32h 30mDelta
Deal found 8/7$1,982

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 10 July 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 1/8

09:55-22:39

2 stops26h 44m

Miami

Fri 15/8

16:53-08:45

2 stops25h 52m

$1,705

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 15/8

12:10-08:59

2 stops34h 49m

Miami

Sat 30/8

22:47-07:05

2 stops42h 18m

$1,724

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 7/8

09:10-20:45

2 stops25h 35m

Miami

Wed 20/8

14:20-07:05

2 stops26h 45m

$1,730

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 23/8

17:45-10:14

2 stops30h 29m

Miami

Sat 30/8

15:15-07:30

2 stops26h 15m

$1,831

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 22/8

09:10-20:29

1 stop25h 19m

Miami

Fri 29/8

10:04-07:05

1 stop31h 01m

$1,903

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 1/11

10:20-22:29

2 stops27h 09m

Miami

Sun 30/11

08:00-09:35

2 stops33h 35m

$1,949

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 13/10

10:25-17:24

1 stop21h 59m

Miami

Mon 17/11

10:20-08:30

2 stops30h 10m

$1,982

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 15/10

17:20-17:29

2 stops39h 09m

$723

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 10/8

09:10-16:04

1 stop44h 54m

$1,128

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 5/10

10:20-17:20

1 stop22h 00m

$1,133

Flights are sorted by cheapest return flights first.

Deals found on 9/7

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 27 June 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 13 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 $1,294). Flying from Sydney to Key Largo in December is currently the most expensive (average of $2,112). 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 10 July 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.

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 10 July 2025.
Read reviews from past customers who have flown with Air Tahiti Nui, Delta, andAir New Zealand 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 Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
64 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Delta
8.0
Very Good
7,954 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air New Zealand
8.0
Very Good
494 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Qantas Airways
7.5
Good
873 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
LATAM Airlines
7.5
Good
1,807 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Overall

8.7

Entertainment

7.3

Crew

9.0

Boarding

8.7

Comfort

8.1

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $1,128. However, be on the lookout for offers from Air Canada and Delta, 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, March is the cheapest month in which you can book a flight from Sydney to Key Largo (average of $1,294). Flying from Sydney to Key Largo in December is currently the most expensive (average of $2,112). 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

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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 10 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,141Average$1,514FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$1,225Average$2,109FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,237Average$1,801FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,491Average$2,580FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,595Average$2,025FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air New ZealandCheapest$1,667Average$2,090FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Virgin AustraliaCheapest$1,810Average$2,778FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

Fly with Cheapflights

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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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