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$723+ Cheap flights to Key Largo

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.
— MIA
15 Jul — 22 Jul1
1 adult

Flights to Key Largo in 2025

Find the latest flights to Key Largo in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 July 2025.

Return 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 Miami
15/10
  • 15/10
  • 2 total stops
  • 39h 09m total
  • Sydney to Key Largo
Highest demand for flights based on searches. 12% potential increase in price ($481 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($119 potential savings vs. average return price).
Average for return flights in July 2025

Find flight deals to Key Largo

Cheapest flights to Key Largo
Explore the most affordable flight options available to Key Largo. Find the lowest fares based on data from user searches, 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

Locate flights to Key Largo that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 July 2025.
Use the filters below to find and compare flights to Key Largo that are best for you.

Fly from

Sydney

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 to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo 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 to Key Largo

When is the best time to book a flight 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.

To ensure you get the cheapest price possible for a flight to Key Largo, you should look to book at least 13 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to Key Largo?

On average, a flight from Sydney to Key Largo takes 21 hours 59 minutes. Flights to Key Largo from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly 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.

Users looking for the lowest fares to Key Largo should consider flying on Sunday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Tuesday afternoons, when prices are usually at their highest.

What are the cheapest airlines that fly to Key Largo?

The cheapest airlines flying from Sydney to Key Largo are Delta, United Airlines and Air Canada.

Rainfall in Key Largo by month

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

In terms of precipitation, rainfall in Key Largo ranges from 41.0 - 252.0 mm 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.

Temperature in Key Largo by month

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

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).

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 Air Tahiti Nui, Delta, andAir New Zealand to the United States. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.
8.0
Very Good

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.

Boarding

8.7

Overall

8.7

Crew

9.0

Entertainment

7.3

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.

FAQs about flying to Key Largo

  • Can I find cheaper flights to Key Largo if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Key Largo on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Key Largo?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to Key Largo.

  • How much is a return flight to Key Largo?

    A return flight to Key Largo will typically cost around $475, however they can be found for as little as $259.

  • Where does the fastest flight to Key Largo depart from?

    For those looking to save time traveling to Key Largo, Sydney Kingsford Smith offers the quickest one-way flight (21 hours 59 minutes).

  • Does Miami have car hire?

    Yes. Those touching down at Miami can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Miami?

    Yes. Miami has hotels nearby for those requiring accommodations. Miami International Airport Hotel is the closest property to Miami (0.0 km away from Miami).

See more FAQs

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Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Key Largo today and book when you’re ready!

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