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£326+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
17 May — 24 May1
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 17 April 2026.

Mon 25/509:55
LHR
-
MIA
Nonstop9h 35m
American Airlines
Tue 2/613:49
MIA
-
LHR
1 stop15h 26m
American Airlines
Deal found 12/4£497
Wed 18/1106:00
LHR
-
MIA
1 stop13h 50m
TAP AIR PORTUGAL
Thu 26/1116:50
MIA
-
LHR
1 stop13h 35m
TAP AIR PORTUGAL
Deal found 12/4£498
Wed 27/507:45
STN
-
MIA
1 stop17h 15m
Multiple Airlines
Wed 3/621:45
MIA
-
STN
1 stop14h 25m
Multiple Airlines
Deal found 12/4£499
Wed 1/715:50
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Wed 8/711:24
MIA
-
LHR
1 stop13h 56m
Virgin Atlantic
Deal found 12/4£499
Tue 21/410:00
LGW
-
MIA
1 stop13h 45m
Air Europa
Tue 28/421:30
MIA
-
LGW
1 stop30h 30m
Air Europa
Deal found 12/4£499
Tue 28/406:30
LHR
-
MIA
1 stop13h 15m
Virgin Atlantic
Tue 5/518:15
MIA
-
LHR
1 stop14h 00m
Virgin Atlantic
Deal found 12/4£500
Mon 2/1115:00
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Tue 10/1117:10
MIA
-
LHR
Nonstop8h 50m
Virgin Atlantic
Deal found 13/4£500
Fri 20/1110:00
LGW
-
MIA
1 stop15h 00m
LEVEL
Fri 27/1121:45
MIA
-
LGW
1 stop13h 25m
LEVEL
Deal found 13/4£500
Tue 21/412:40
STN
-
MIA
2 stops32h 20m
Multiple Airlines
Tue 28/419:45
MIA
-
STN
2 stops23h 05m
Multiple Airlines
Deal found 16/4£501
Sun 27/915:50
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Thu 15/1018:05
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 12/4£501
Mon 11/506:40
STN
-
MIA
1 stop18h 20m
Multiple Airlines
Wed 27/521:45
MIA
-
STN
1 stop16h 35m
Multiple Airlines
Deal found 12/4£502
Thu 7/506:30
LHR
-
MIA
1 stop13h 15m
Virgin Atlantic
Thu 14/522:35
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 13/4£502

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 858,174 searches and data was last updated on 17 April 2026.

Return from

£497

One-way from

£326

Popular in

December

Cheapest in

September

Average price

£523
American Airlines
  • American Airlines
  • 25/5-2/6
  • 1 total stop
  • 25h 01m total
  • London to Miami
Search Deals
4/9
  • 4/9
  • 3 total stops
  • 32h 25m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 858,174 searches and data was last updated on 17 April 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

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 27/5

12:20-20:45

1 stop13h 25m

Miami

Wed 24/6

16:15-08:35

1 stop11h 20m

£520

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 27/7

14:10-00:21

1 stop15h 11m

Miami

Sun 9/8

18:19-21:40

1 stop22h 21m

£529

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 9/9

06:30-16:35

1 stop15h 05m

Miami

Sun 13/9

21:25-21:40

1 stop19h 15m

£529

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 19/5

06:30-14:45

1 stop13h 15m

Miami

Mon 25/5

22:35-12:35

Nonstop9h 00m

£530

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 16/5

06:30-14:45

1 stop13h 15m

Miami

Fri 22/5

19:30-14:35

1 stop14h 05m

£533

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 9/9

11:30-20:05

1 stop13h 35m

Miami

Sun 13/9

17:30-06:50

1 stop32h 20m

£533

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 3/5

06:30-14:45

1 stop13h 15m

Miami

Tue 19/5

22:35-12:35

Nonstop9h 00m

£536

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 25/5

11:30-20:45

1 stop14h 15m

Miami

Tue 9/6

15:25-08:50

1 stop12h 25m

£536
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 20/5

10:55-15:50

Nonstop9h 55m

Miami

Thu 28/5

18:05-08:05

Nonstop9h 00m

£537

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 11/5

10:55-15:50

Nonstop9h 55m

Miami

Wed 27/5

18:05-08:05

Nonstop9h 00m

£537

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 London to Key Largo. Price data was last updated on 10 April 2026.

The price you pay for your flight to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Key Largo?

On average, a flight from London to Key Largo takes 13 hours 41 minutes. Flights to Key Largo from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Key Largo

The most flights from London to Key Largo are scheduled on a Wednesday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (24 on average).

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

The most popular airlines flying from London to Key Largo are Virgin Atlantic, British Airways and American Airlines.

British Airways
British Airways
From £300
Virgin Atlantic
Virgin Atlantic
From £370
Finnair
Finnair
From £355
American Airlines
American Airlines
From £369

What are the cheapest airlines that fly to Key Largo?

The cheapest airlines flying from London to Key Largo are Norse Atlantic UK, Icelandair and SWISS.

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 inches 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 17 April 2026.
Get a feel of what it's like to fly with Finnair,Virgin Atlantic, andNorse Atlantic UK to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.7
Good
1,389 reviews
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Virgin Atlantic
7.5
Good
687 reviews
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Norse Atlantic UK
7.3
Good
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
American Airlines
7.1
Good
11,595 reviews
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
British Airways
6.7
Okay
7,891 reviews
Finnair
7.7
Good
1,389 reviews
Check prices

Food

6.7

Overall

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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, Norse Atlantic UK 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 £67, however they can be found for as little as £66.

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

    For those looking to save time traveling to Key Largo, London offers the quickest one-way flight (9 hours 30 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 mi away from Miami).

See more FAQs

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How does Cheapflights help users find flights to Key Largo?

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

Cheapflights simply makes it quick and affordable to book flights to Key Largo by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Need flexible booking options for your flight to Key Largo ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights 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!

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