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$827+ 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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
7 Jun — 14 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to Key Largo in 2026

Enter your travel dates to find the best prices.

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 8 May 2026.

Mon 11/509:15
SYD
-
MIA
2 stops23h 19m
Delta
Sun 24/508:05
MIA
-
SYD
2 stops32h 45m
Delta
Deal found 7/5$1,232
Thu 27/809:15
SYD
-
MIA
2 stops27h 36m
Delta
Sun 13/918:30
MIA
-
SYD
1 stop22h 20m
Delta
Deal found 7/5$1,236
Tue 11/809:15
SYD
-
MIA
2 stops26h 19m
Delta
Sat 15/810:35
MIA
-
SYD
2 stops30h 15m
Delta
Deal found 7/5$1,306
Fri 28/809:15
SYD
-
MIA
1 stop22h 52m
Delta
Mon 14/918:30
MIA
-
SYD
1 stop22h 20m
Delta
Deal found 7/5$1,308
Sat 29/809:15
SYD
-
MIA
1 stop22h 52m
Delta
Tue 15/914:03
MIA
-
SYD
2 stops26h 47m
Delta
Deal found 7/5$1,313
Sat 29/809:15
SYD
-
MIA
1 stop22h 52m
Delta
Sat 12/918:30
MIA
-
SYD
1 stop22h 20m
Delta
Deal found 7/5$1,376
Fri 28/809:15
SYD
-
MIA
1 stop22h 52m
Delta
Sat 12/918:30
MIA
-
SYD
1 stop22h 20m
Delta
Deal found 7/5$1,377
Fri 28/809:15
SYD
-
MIA
2 stops25h 53m
Delta
Thu 10/914:03
MIA
-
SYD
2 stops26h 47m
Delta
Deal found 7/5$1,382
Wed 13/510:20
SYD
-
MIA
1 stop20h 46m
United Airlines
Wed 10/618:35
MIA
-
SYD
1 stop22h 20m
United Airlines
Deal found 6/5$1,428
Mon 11/509:30
SYD
-
MIA
3 stops26h 39m
United Airlines
Sun 24/517:08
MIA
-
SYD
2 stops23h 52m
United Airlines
Deal found 6/5$1,429
Mon 1/609:30
SYD
-
MIA
2 stops27h 10m
Air New Zealand
Mon 8/616:53
MIA
-
SYD
2 stops24h 07m
Air New Zealand
Deal found 8/5$1,446

Find flight deals to Key Largo

Find the latest flights to Key Largo in 2026, 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 8 May 2026.

Return from

$1,236

One-way from

$827

Popular in

January

Cheapest in

February

Average price

$1,875
Delta
  • Delta
  • 27/8-14/9
  • 2 total stops
  • 45h 12m total
  • Sydney to Miami
Search Deals
18/8
  • 18/8
  • 3 total stops
  • 39h 16m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($265 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($77 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

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 8 May 2026.
Use the filters below to find and compare flights to Key Largo that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 27/8

09:15-21:08

2 stops25h 53m

Miami

Mon 14/9

14:30-06:50

2 stops26h 20m

$1,236

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 7/6

10:20-07:39

1 stop35h 19m

Miami

Sun 21/6

18:35-06:55

1 stop22h 20m

$1,511
Fastest return journey

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 10/8

09:15-18:07

1 stop22h 52m

Miami

Mon 7/9

18:30-06:50

1 stop22h 20m

$1,730

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 5/8

09:30-20:33

2 stops25h 03m

Miami

Tue 1/9

13:30-06:55

3 stops27h 25m

$1,874

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Tue 9/6

10:20-17:31

1 stop21h 11m

Miami

Tue 16/6

15:44-07:00

2 stops49h 16m

$1,884

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 3/6

10:20-22:40

2 stops26h 20m

Miami

Wed 24/6

15:44-06:55

2 stops25h 11m

$1,884

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 31/5

09:15-00:47

2 stops29h 32m

Miami

Sun 7/6

08:17-06:50

2 stops32h 33m

$1,954

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 2/9

09:15-22:48

2 stops27h 33m

Miami

Tue 15/9

14:03-06:50

2 stops26h 47m

$2,037

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 2/9

09:30-18:58

2 stops23h 28m

Miami

Thu 10/9

13:30-07:00

2 stops27h 30m

$2,121
Cheapest one-way

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 14/5

09:15-19:58

2 stops24h 43m

$882

Flights are sorted by cheapest return flights first.

Deals found on 6/5

Showing 1-10 of 15 resultsSorted by cheapest first
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

How long is the flight to Key Largo?

On average, a flight from Sydney to Key Largo takes 21 hours 51 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.

What are the most popular airlines that fly to Key Largo?

The most popular airlines flying from Sydney to Key Largo are Qantas Airways, Air New Zealand and United Airlines.

Qantas Airways
Qantas Airways
From $1,211
Air New Zealand
Air New Zealand
From $1,329
American Airlines
American Airlines
From $1,531
Air Canada
Air Canada
From $1,208

What are the cheapest airlines that fly to Key Largo?

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

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 8 May 2026.
Read reviews from past customers who have flown Air New Zealand,Qantas Airways, andUnited Airlines to the United States. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
640 reviews
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,033 reviews
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
United Airlines
7.4
Good
9,694 reviews
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
American Airlines
7.1
Good
11,667 reviews
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
11,002 reviews
Air New Zealand
8.0
Very Good
640 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

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, United Airlines 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 $88, however they can be found for as little as $83.

  • 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 51 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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