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$980+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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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 14 November 2025.

Sun 7/1209:55SYD - MIA
2 stops27h 48mAir New Zealand
Wed 10/1213:25MIA - SYD
2 stops29h 05mAir New Zealand
Deal found 13/11$1,704
Thu 4/1211:20SYD - MIA
2 stops25h 40mAmerican Airlines
Thu 8/115:55MIA - SYD
1 stop25h 05mAmerican Airlines
Deal found 11/11$1,729
Mon 15/1211:20SYD - MIA
1 stop26h 40mAmerican Airlines
Tue 23/1213:59MIA - SYD
2 stops27h 01mAmerican Airlines
Deal found 12/11$1,778
Tue 16/1221:25SYD - MIA
1 stop35h 03mAmerican Airlines
Mon 22/1221:50MIA - SYD
1 stop43h 10mAmerican Airlines
Deal found 12/11$1,788
Wed 17/1207:05SYD - MIA
2 stops23h 07mAmerican Airlines
Mon 29/1207:43MIA - SYD
1 stop33h 17mAmerican Airlines
Deal found 11/11$1,816
Sat 13/1211:20SYD - MIA
2 stops28h 22mAmerican Airlines
Tue 23/1217:39MIA - SYD
2 stops23h 21mAmerican Airlines
Deal found 12/11$1,853
Tue 2/1209:15SYD - MIA
2 stops52h 45mJapan Airlines
Tue 9/1207:06MIA - SYD
2 stops31h 44mJapan Airlines
Deal found 12/11$1,993
Sun 23/1107:45SYD - MIA
2 stops28h 07mAir New Zealand
Fri 28/1111:55MIA - SYD
2 stops28h 50mAir New Zealand
Deal found 13/11$2,101
Sun 16/1111:20SYD - MIA
2 stops40h 19mAir Canada
Thu 20/1108:00MIA - SYD
2 stops33h 35mAir Canada
Deal found 13/11$2,179
Mon 15/1211:20SYD - MIA
1 stop34h 00mAmerican Airlines
Wed 24/1216:22MIA - SYD
1 stop24h 38mAmerican Airlines
Deal found 12/11$2,202
Mon 15/1211:20SYD - MIA
1 stop36h 28mAmerican Airlines
Sat 27/1222:05MIA - SYD
1 stop40h 50mAmerican Airlines
Deal found 12/11$2,213

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 14 November 2025.

Return from

$1,704

One-way from

$980

Popular in

December

Cheapest in

March

Average price

$1,883
Air New Zealand
  • Air New Zealand
  • 7/12-10/12
  • 4 total stops
  • 56h 53m total
  • Sydney to Miami
Search Deals
Air New Zealand
  • Air New Zealand
  • 12/5
  • 2 total stops
  • 35h 52m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($300 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($61 potential savings vs. average return price).
Search Deals
Average for return flights in November 2025
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 14 November 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

Sat 13/12

11:20-21:46

2 stops26h 26m

Miami

Tue 23/12

18:34-09:00

1 stop22h 26m

$1,853

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 9/3

13:55-07:16

2 stops32h 21m

Miami

Mon 23/3

10:15-08:45

2 stops31h 30m

$1,923

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Mon 9/3

11:20-20:23

1 stop24h 03m

Miami

Mon 23/3

17:20-09:00

2 stops24h 40m

$2,118

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 7/3

11:20-19:16

2 stops47h 56m

Miami

Sat 21/3

08:00-08:35

2 stops33h 35m

$2,170

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sat 7/3

11:20-05:39

1 stop34h 19m

Miami

Sat 21/3

17:51-09:00

1 stop24h 09m

$2,197

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 1/5

21:40-20:20

2 stops36h 40m

Miami

Sun 10/5

19:30-19:45

2 stops34h 15m

$2,210

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 12/12

11:20-22:00

1 stop26h 40m

Miami

Sat 27/12

22:05-06:55

1 stop40h 50m

$2,287

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 26/11

11:20-20:16

2 stops48h 56m

Miami

Sat 29/11

08:00-09:35

3 stops33h 35m

$2,580

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 5/12

17:30-05:20

2 stops27h 50m

Miami

Sun 14/12

17:35-13:00

2 stops27h 25m

$2,594

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Fri 5/12

17:30-05:20

2 stops27h 50m

Miami

Mon 15/12

17:30-13:55

2 stops28h 25m

$2,594

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 21 results
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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 7 November 2025.

To ensure you get the cheapest price possible for a flight to Key Largo, you should look to book at least 72 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 27 hours 48 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 16 December 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 most popular airlines that fly to Key Largo?

The most popular airlines flying from Sydney to Key Largo are Qantas Airways, Air Canada and Delta.

Qantas Airways
Qantas Airways
From $1,607
Air Canada
Air Canada
From $1,425
Qatar Airways
Qatar Airways
From $2,045
United Airlines
United Airlines
From $996

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 14 November 2025.
Read reviews from past customers who have flown Air New Zealand, Delta, andQantas Airways 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
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Air New Zealand
8.0
Very Good
526 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Delta
7.9
Good
8,008 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Qantas Airways
7.5
Good
934 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
United Airlines
7.4
Good
9,016 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Air Canada
7.1
Good
10,444 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.4

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.

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 $423, however they can be found for as little as $313.

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

    For those looking to save time traveling to Key Largo, Brisbane offers the quickest one-way flight (23 hours 35 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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