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$676+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals to Key Largo

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 7 November 2025.

Tue 2/1211:20SYD - MIA
2 stops41h 14mAir Canada
Fri 12/1218:40MIA - SYD
1 stop44h 15mAir Canada
Deal found 5/11$1,296
Thu 4/1211:20SYD - MIA
2 stops27h 09mAir Canada
Thu 11/1208:00MIA - SYD
2 stops33h 35mAir Canada
Deal found 6/11$1,373
Mon 10/1111:20SYD - MIA
1 stop26h 39mAmerican Airlines
Sun 16/1117:35MIA - SYD
1 stop23h 25mAmerican Airlines
Deal found 5/11$1,611
Mon 10/1110:40SYD - MIA
2 stops26h 58mDelta
Sun 16/1107:40MIA - SYD
1 stop32h 50mDelta
Deal found 5/11$1,613
Sun 23/1111:20SYD - MIA
2 stops28h 20mMultiple Airlines
Sun 7/1205:30MIA - SYD
2 stops33h 55mMultiple Airlines
Deal found 5/11$1,617
Tue 2/1211:20SYD - MIA
1 stop20h 28mQantas Airways
Fri 12/1221:55MIA - SYD
1 stop43h 05mQantas Airways
Deal found 5/11$1,628
Mon 1/1211:20SYD - MIA
1 stop20h 28mQantas Airways
Sun 7/1217:35MIA - SYD
1 stop23h 25mQantas Airways
Deal found 6/11$1,674
Thu 4/1216:00SYD - MIA
2 stops46h 29mAir Canada
Thu 8/121:05MIA - SYD
2 stops65h 50mAir Canada
Deal found 5/11$1,685
Thu 4/1211:50SYD - MIA
1 stop19h 45mUnited Airlines
Thu 8/111:05MIA - SYD
2 stops30h 00mUnited Airlines
Deal found 5/11$1,713

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 7 November 2025.

Return from

$1,296

One-way from

$676

Popular in

December

Cheapest in

March

Average price

$1,954
Air Canada
  • Air Canada
  • 2/12-12/12
  • 4 total stops
  • 100h 44m total
  • Sydney to Miami
Search Deals
5/2
  • 5/2
  • 3 total stops
  • 50h 26m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($349 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($76 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 7 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

Thu 4/12

11:20-22:29

2 stops27h 09m

Miami

Thu 11/12

08:00-09:35

2 stops33h 35m

$1,373

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 10/12

11:20-22:00

1 stop26h 40m

Miami

Wed 7/1

19:55-09:00

1 stop45h 05m

$1,628

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 4/12

16:00-22:29

2 stops46h 29m

Miami

Thu 8/1

21:05-06:55

2 stops65h 50m

$1,685

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

$1,947

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 1/4

13:10-18:29

1 stop20h 19m

Miami

Thu 30/4

19:00-07:05

1 stop22h 05m

$1,984

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Sun 23/11

10:40-06:25

2 stops35h 45m

Miami

Sun 30/11

07:40-08:30

1 stop32h 50m

$2,208

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 4/12

12:10-21:50

1 stop25h 40m

Miami

Thu 8/1

18:15-09:15

1 stop23h 00m

$2,411

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 24/12

11:50-15:40

1 stop19h 50m

Miami

Mon 5/1

06:20-09:05

2 stops34h 45m

$2,490

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Wed 24/12

10:40-10:23

2 stops39h 43m

Miami

Mon 5/1

13:21-08:30

2 stops27h 09m

$2,498

SydneyMiami

SYD - MIA

SYDMIA

Sydney Kingsford Smith

Thu 5/2

14:00-00:26

3 stops50h 26m

$676

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 20 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 31 October 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 20 hours 19 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 $1,620
Air Canada
Air Canada
From $1,437
Qatar Airways
Qatar Airways
From $2,062
United Airlines
United Airlines
From $1,005

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 7 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

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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
8,000 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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
929 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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
9,007 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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
10,416 reviews
Air New Zealand
8.0
Very Good
526 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.4

Overall

8.0

Entertainment

7.5

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 $426, however they can be found for as little as $316.

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

    For those looking to save time traveling to Key Largo, Melbourne offers the quickest one-way flight (20 hours 15 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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