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$447+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SYD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Sydney Kingsford Smith are usually found in February or May, booked 56 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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$945
(Air Canada)

One-way from

$447
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$1,463
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. 19% potential increase in price ($360 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($81 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This Air Canada deal was found by Cheapflights users on 3/30. 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.
Mon 5/127:55 amMIA - SYD
2 stops33h 25mAir Canada
Mon 5/269:20 amSYD - MIA
2 stops41h 58mAir Canada
Deal found 3/30$945
This Air Canada deal was found by Cheapflights users on 4/1. 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.
Wed 5/2812:06 pmMIA - SYD
2 stops29h 14mMultiple Airlines
Wed 6/49:20 amSYD - MIA
2 stops41h 58mMultiple Airlines
Deal found 4/1$961
This Fiji Airways deal was found by Cheapflights users on 4/1. 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 Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:00 pmMIA - SYD
2 stops26h 45mFiji Airways
Tue 5/131:15 pmSYD - MIA
2 stops23h 31mFiji Airways
Deal found 4/1$1,295
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 8/186:20 pmMIA - SYD
2 stops59h 25mAlaska Airlines
Thu 8/289:40 pmSYD - MIA
2 stops33h 26mAlaska Airlines
Deal found 4/1$1,310
This eDestinos deal was found by Cheapflights users on 3/31. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2610:15 pmMIA - SYD
1 stop54h 45mTurkish Airlines
Thu 9/48:55 pmSYD - MIA
1 stop37h 25mTurkish Airlines
Deal found 3/31$1,480
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Mon 10/136:15 pmMIA - SYD
1 stop22h 40mAir New Zealand
Wed 10/2911:45 amSYD - MIA
2 stops25h 05mAir New Zealand
Deal found 3/31$1,555
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Tue 7/88:06 pmMIA - SYD
1 stop20h 59mQantas Airways
Sun 7/209:10 amSYD - MIA
1 stop21h 05mQantas Airways
Deal found 3/31$1,678

Cheapflights Fare Finder

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 April 2, 2025.
Use the filters below to find and compare flights from Key Largo to Sydney that are best for you.

Fly from

Key Largo

Fly to

Sydney

Route

Depart

Return

Price

MiamiSydney

MIA - SYD

MIASYD

Miami

Mon 5/12

7:55 am-7:20 am

2 stops33h 25m

Sydney Kingsford Smith

Mon 5/26

9:20 am-1:18 pm

2 stops41h 58m

$945

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 5/28

12:06 pm-7:20 am

2 stops29h 14m

Sydney Kingsford Smith

Wed 6/4

9:20 am-1:18 pm

2 stops41h 58m

$961

MiamiSydney

MIA - SYD

MIASYD

Miami

Sat 5/3

7:00 pm-11:45 am

2 stops26h 45m

Sydney Kingsford Smith

Tue 5/13

1:15 pm-10:46 pm

2 stops23h 31m

$1,295

MiamiSydney

MIA - SYD

MIASYD

Miami

Mon 8/18

6:20 pm-7:45 pm

2 stops59h 25m

Sydney Kingsford Smith

Thu 8/28

9:40 pm-5:06 pm

2 stops33h 26m

$1,310

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 8/26

10:15 pm-7:00 pm

1 stop54h 45m

Sydney Kingsford Smith

Thu 9/4

8:55 pm-8:20 pm

1 stop37h 25m

$1,480

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 8/12

4:53 pm-8:45 am

2 stops25h 52m

Sydney Kingsford Smith

Wed 8/27

10:20 am-4:58 pm

1 stop20h 38m

$1,555

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 7/8

8:06 pm-7:05 am

1 stop20h 59m

Sydney Kingsford Smith

Sun 7/20

9:10 am-4:15 pm

1 stop21h 05m

$1,678

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 4/22

7:40 pm-5:10 pm

1 stop31h 30m

Sydney Kingsford Smith

Wed 4/30

8:45 pm-4:50 pm

1 stop34h 05m

$1,759

MiamiSydney

MIA - SYD

MIASYD

Miami

Wed 4/30

9:40 pm-12:15 pm

2 stops48h 35m

$447

MiamiSydney

MIA - SYD

MIASYD

Miami

Tue 5/27

6:21 pm-7:45 pm

2 stops35h 24m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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.

Cheapflights Insights

Everything you need to know about your flight from Key Largo to Sydney

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 March 28, 2025.

The best time to book flights from Key Largo to Sydney is 56 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 $1,046). 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 April 2, 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 April 2, 2025.
Read through reviews of airlines operating flights from Key Largo to Sydney, such as ANA, Alaska Airlines and Fiji Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very good
830 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Alaska Airlines
8.0
Very good
9,820 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Fiji Airways
8.0
Very good
180 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Air New Zealand
7.9
Good
458 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Qantas Airways
7.5
Good
813 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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 $608. However, be on the lookout for offers from Fiji Airways and Qantas Airways, 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 $1,046). 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$296Average$1,627FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$1,222FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$864Average$1,242FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$946Average$1,055FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,191Average$1,381FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,311Average$1,717FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,312Average$1,905FlexibilityNo cancel feeOn-time74%

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