Find flights
Airlines

$1,119+ Cheap flights to Key Largo

— MIA
19 Oct — 26 Oct1
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

Mon 5/1010:20 -
1 stop21h 54m
Mon 19/1008:15 -
2 stops33h 05m
Deal found 17/9$1,294
Thu 15/1010:20 -
2 stops50h 57m
Mon 26/1008:00 -
2 stops33h 35m
Deal found 17/9$1,307
Wed 4/1111:20 -
2 stops51h 51m
Wed 18/1108:00 -
2 stops33h 35m
Deal found 16/9$1,322
Mon 5/1010:20 -
2 stops50h 57m
Wed 21/1008:15 -
2 stops33h 05m
Deal found 16/9$1,328

Find flight deals to Key Largo

Return from

$1,294

One-way from

$1,119

Popular in

January

Cheapest in

February

Average price

$1,856
Air Canada
  • Air Canada
  • 5/10-19/10
  • 3 total stops
  • 54h 59m total
  • Sydney to Miami
Search Deals
Qatar Airways
  • Qatar Airways
  • 29/9-31/12
  • 1 total stop
  • 39h 50m total
  • Sydney to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($181 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($51 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 29/9

14:50-16:40

1 stop39h 50m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,119

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 29/9

13:15-10:30

3 stops35h 15m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,175

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 9/11

10:40-18:40

2 stops24h 00m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,262

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Fri 4/12

10:40-17:32

1 stop22h 52m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,264

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Thu 3/12

11:20-19:56

2 stops24h 36m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,266

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 29/9

09:15-00:55

2 stops29h 40m

Miami

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,269

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 5/10

10:20-17:14

1 stop21h 54m

Miami

Mon 19/10

08:15-08:20

2 stops33h 05m

$1,325

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Mon 12/10

10:20-22:17

2 stops26h 57m

Miami

Mon 19/10

08:15-08:20

2 stops33h 05m

$1,328

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Tue 24/11

11:20-12:35

2 stops41h 15m

Miami

Sun 6/12

08:00-09:35

3 stops33h 35m

$1,358

SydneyMiami

SYD Sydney Kingsford Smith - MIA Miami

SYDMIA

Sydney Kingsford Smith

Sun 8/11

11:20-12:16

3 stops40h 56m

Miami

Thu 12/11

13:22-09:35

2 stops28h 13m

$1,495

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 20 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

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 20 hours 27 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 American Airlines.

Qantas Airways
Qantas Airways
From $1,174
Air New Zealand
Air New Zealand
From $1,423
American Airlines
American Airlines
From $1,554
Air Canada
Air Canada
From $1,158

What are the cheapest airlines that fly to Key Largo?

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

Rainfall in Key Largo 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

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

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
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed
Air New Zealand
8.0
Very Good
669 reviews
Air New Zealand
8.0
Very Good
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed
Qantas Airways
7.5
Good
1,102 reviews
Air New Zealand
8.0
Very Good
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed
United Airlines
7.4
Good
10,232 reviews
Air New Zealand
8.0
Very Good
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed
Air Canada
7.1
Good
11,653 reviews
Air New Zealand
8.0
Very Good
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed
American Airlines
7.0
Good
12,087 reviews
Air New Zealand
8.0
Very Good
669 reviews
Check prices

Overall

8.0

Entertainment

7.4

Comfort

7.9

Food

7.5

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

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 $2,935, however they can be found for as little as $123.

  • 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 (20 hours 27 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to Key Largo by cabin class

First Class flights to Key Largo
Business Class flights to Key Largo
Prem Economy Class flights to Key Largo
Economy Class flights to Key Largo

Fly with Cheapflights

How does Cheapflights help users find flights to Key Largo?

Cheapflights makes it easy to find Key Largo flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets to Key Largo?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Key Largo.

Can Cheapflights find flights to Key Largo with no change fees?

Yes! Cheapflights helps users easily find flights to Key Largo with no change fees.

Can Cheapflights notify me if prices for flights to Key Largo become cheaper?

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.