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$625+ Cheap flights from Key Largo, FL to Sydney (SYD)

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Key Largo to Sydney Kingsford Smith are usually found in February or March, booked 85 days in advance, depart on a Sunday or Tuesday and return on a Friday

Cheap flight deals from Key Largo to Sydney

Keep the following information in mind while searching for Key Largo to Sydney flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$871
(United Airlines)

One-way from

$625
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,041
Provider with most accurate pricing for Miami-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Miami-Sydney Kingsford Smith flights.
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From Key Largo to Sydney Kingsford Smith
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One-way flight from Key Largo to Sydney Kingsford Smith
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Highest demand for flights based on searches. 20% potential increase in price ($393 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($76 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Key Largo to Sydney

Cheapest flights from Key Largo to Sydney
Explore the most affordable flight options available from Key Largo to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2012:21 pmMIA - SYD
2 stops28h 44mUnited Airlines
Wed 3/512:10 pmSYD - MIA
2 stops25h 31mUnited Airlines
Deal found 2/19$871
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:50 amMIA - SYD
1 stop31h 00mDelta
Wed 3/1210:05 amSYD - MIA
1 stop22h 23mDelta
Deal found 2/19$876
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:20 amMIA - SYD
3 stops34h 00mMultiple Airlines
Tue 4/156:00 amSYD - MIA
3 stops47h 30mMultiple Airlines
Deal found 2/19$1,227
This KAYAK deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:35 amMIA - SYD
2 stops45h 10mAir New Zealand
Thu 1/89:55 amSYD - MIA
2 stops41h 20mAir New Zealand
Deal found 2/19$1,252
This CrystalTravel deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2110:30 amMIA - SYD
2 stops41h 35mTurkish Airlines
Sun 4/68:55 pmSYD - MIA
2 stops37h 25mTurkish Airlines
Deal found 2/19$1,544
This Ovago deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 pmMIA - SYD
2 stops25h 30mFiji Airways
Tue 12/232:10 pmSYD - MIA
2 stops24h 10mFiji Airways
Deal found 2/19$1,574
This Alaska Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:55 pmMIA - SYD
3 stops33h 50mAlaska Airlines
Thu 3/139:40 pmSYD - MIA
2 stops34h 10mAlaska Airlines
Deal found 2/19$1,619
This American Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/53:30 pmMIA - SYD
2 stops25h 35mAmerican Airlines
Thu 6/269:10 amSYD - MIA
1 stop20h 45mAmerican Airlines
Deal found 2/18$1,644
This Gurufare deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/305:28 pmMIA - SYD
2 stops24h 52mQantas Airways
Wed 12/102:30 pmSYD - MIA
1 stop21h 40mQantas Airways
Deal found 2/19$1,701
This Air Canada deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:55 pmMIA - SYD
3 stops51h 40mAir Canada
Tue 11/1111:20 amSYD - MIA
2 stops27h 17mAir Canada
Deal found 2/19$1,924
This Cheapflightsfares deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/141:45 amMIA - SYD
2 stops39h 00mLATAM Airlines
Tue 7/112:10 pmSYD - MIA
1 stop33h 20mLATAM Airlines
Deal found 2/18$2,076
This Gotogate deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/227:30 pmMIA - SYD
1 stop31h 20mQatar Airways
Mon 2/249:40 pmSYD - MIA
1 stop52h 10mQatar Airways
Deal found 2/18$2,133

Find flights from Key Largo to Sydney within your budget

Customize your flight search to find flights from Key Largo to Sydney 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 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Key Largo

Fly to

Sydney

Route

Depart

Return

Price

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 4/15

4:48 pm-6:55 am

1 stop24h 07m

Sydney Kingsford Smith

Wed 4/30

9:30 am-11:44 pm

2 stops28h 14m

$871

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 3/4

7:50 am-6:50 am

1 stop31h 00m

Sydney Kingsford Smith

Wed 3/12

10:05 am-5:28 pm

1 stop22h 23m

$876

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 4/8

7:20 am-7:20 am

3 stops34h 00m

Sydney Kingsford Smith

Tue 4/15

6:00 am-3:30 pm

3 stops47h 30m

$1,227

MiamiSydney

MIA - SYD

MIASYD

Miami

Fri 3/21

10:30 am-7:05 pm

2 stops41h 35m

Sydney Kingsford Smith

Sun 4/6

8:55 pm-8:20 pm

2 stops37h 25m

$1,544

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 3/5

5:55 pm-7:45 pm

3 stops33h 50m

Sydney Kingsford Smith

Thu 3/13

9:40 pm-4:50 pm

2 stops34h 10m

$1,619

MiamiSydney

MIA - SYD

MIASYD

Miami

Sat 3/8

9:30 am-9:00 am

1 stop31h 30m

Sydney Kingsford Smith

Wed 3/12

11:15 am-6:36 pm

1 stop22h 21m

$1,653

MiamiSydney

MIA - SYD

MIASYD

Miami

Thu 3/13

6:05 pm-8:35 am

3 stops47h 30m

Sydney Kingsford Smith

Tue 3/25

10:25 am-1:22 pm

2 stops41h 57m

$2,038

MiamiSydney

MIA - SYD

MIASYD

Miami

Sun 3/23

1:40 am-6:30 am

2 stops37h 50m

Sydney Kingsford Smith

Mon 3/31

12:50 pm-11:56 am

3 stops38h 06m

$2,228

MiamiSydney

MIA - SYD

MIASYD

Miami

Fri 3/21

7:03 pm-5:40 pm

3 stops31h 37m

Sydney Kingsford Smith

Sun 4/6

9:10 am-5:39 am

3 stops34h 29m

$2,234

MiamiSydney

MIA - SYD

MIASYD

Miami

Thu 3/6

6:25 am-7:25 am

3 stops57h 00m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 19 results
1
2

Best time to book a flight from Key Largo to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Key Largo with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Key Largo to Sydney

Get recent, data-driven insights about flights from Key Largo to Sydney including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Sydney. Price data was last updated on February 14, 2025.

The best time to book flights from Key Largo to Sydney is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Key Largo to Sydney (average of $1,051). Flying from Key Largo to Sydney in December is currently the most expensive (average of $1,643). 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 KE9 to SYD?

Find hourly flight availability from Key Largo to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from Key Largo to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Sydney. Price data was last updated on March 31, 2024.

Travelers seeking maximum savings on their Key Largo to Sydney flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from Key Largo to Sydney, such as Air Tahiti Nui, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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.

Alaska Airlines
8.0
Very good
9,697 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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
8,219 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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
7.9
Good
461 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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
1,795 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Comfort

8.0

Overall

8.7

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 Key Largo to Sydney. 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 into for flights to Sydney from Key Largo?

    If you book a flight to Sydney from Key Largo, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney. There are 0 flights from Key Largo to Kingsford Smith per day from 7 different airlines.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $876. However, be on the lookout for offers from Qatar Airways and Air Canada, as they are both options that can get you from Key Largo to Sydney for a low price.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Sydney (average of $1,051). Flying from Key Largo to Sydney in December is currently the most expensive (average of $1,643). 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

Traveling to a place near Key Largo?

Book flights to Key Largo if you plan to visit one of these locations
Wollongong
Parramatta
Coogee
Manly

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Top 7 airlines flying from Key Largo to Sydney

Discover the top 7 airlines that operate flights from Key Largo to Sydney. 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 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$346Average$1,606FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$1,294FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$859Average$1,335FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,189Average$1,504FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,191Average$1,381FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,308Average$1,462FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,312Average$1,793FlexibilityNo cancel feeOn-time74%
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