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£309+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
29 Mar — 5 Apr1
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 27 February 2026.

Wed 11/309:45
LHR
-
MIA
Nonstop9h 55m
British Airways
Tue 12/517:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 25/2£379
Tue 14/415:35
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 23/422:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 26/2£380
Tue 17/312:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Wed 25/318:15
MIA
-
LHR
1 stop12h 35m
Icelandair
Deal found 27/2£381
Tue 17/312:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Sun 29/318:15
MIA
-
LHR
1 stop12h 40m
Icelandair
Deal found 24/2£384
Mon 13/415:40
LGW
-
MIA
1 stop35h 15m
Icelandair
Sun 26/418:15
MIA
-
LGW
1 stop15h 25m
Icelandair
Deal found 26/2£386
Wed 15/415:40
LGW
-
MIA
1 stop35h 15m
Icelandair
Wed 29/418:15
MIA
-
LGW
1 stop15h 25m
Icelandair
Deal found 25/2£387
Tue 10/312:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Wed 25/318:15
MIA
-
LHR
1 stop12h 35m
Icelandair
Deal found 23/2£387
Tue 3/308:30
LGW
-
MIA
1 stop15h 25m
Multiple Airlines
Tue 24/321:10
MIA
-
LGW
1 stop17h 25m
Multiple Airlines
Deal found 24/2£391
Tue 15/1209:45
LHR
-
MIA
Nonstop9h 55m
British Airways
Mon 11/117:10
MIA
-
LHR
Nonstop8h 40m
British Airways
Deal found 26/2£392
Sat 2/515:40
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 14/517:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 24/2£393
Wed 15/421:25
LHR
-
MIA
1 stop29h 30m
Icelandair
Wed 22/418:15
MIA
-
LHR
1 stop21h 05m
Icelandair
Deal found 26/2£394
Wed 11/319:25
LGW
-
MIA
1 stop27h 30m
Multiple Airlines
Tue 24/321:10
MIA
-
LGW
1 stop17h 25m
Multiple Airlines
Deal found 24/2£396

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 27 February 2026.

Return from

£379

One-way from

£309

Popular in

December

Cheapest in

September

Average price

£464
British Airways
  • British Airways
  • 11/3-12/5
  • Nonstop
  • 18h 50m total
  • London to Miami
Search Deals
12/3
  • 12/3
  • 1 total stop
  • 27h 40m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 27 February 2026.
Use the filters below to find and compare flights to Key Largo that are best for you.

Fly from

Route

Depart

Return

Price

LondonMiami

LTN - MIA

LTNMIA

London Luton

Fri 17/4

05:40-20:00

1 stop19h 20m

Miami

Sun 26/4

21:45-18:05

1 stop15h 20m

£436

LondonMiami

LTN - MIA

LTNMIA

London Luton

Mon 13/4

07:05-20:00

1 stop17h 55m

Miami

Mon 27/4

21:45-18:05

1 stop15h 20m

£444

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 13/4

08:40-17:30

1 stop13h 50m

Miami

Tue 19/5

10:16-05:55

1 stop14h 39m

£475

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Tue 17/3

11:55-21:55

1 stop14h 00m

Miami

Fri 3/4

18:15-14:40

1 stop15h 25m

£491

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 10/4

09:10-20:00

1 stop15h 50m

Miami

Mon 13/4

21:45-11:25

1 stop32h 40m

£498

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 23/4

08:45-17:25

1 stop13h 40m

Miami

Tue 5/5

10:16-06:55

2 stops15h 39m

£506

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

£508

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 9/3

09:00-18:30

1 stop13h 30m

Miami

Sun 15/3

09:00-07:30

1 stop18h 30m

£509

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 16/4

14:30-20:00

1 stop34h 30m

Miami

Wed 10/6

21:45-12:15

1 stop33h 30m

£516

LondonMiami

SEN - MIA

SENMIA

London Southend

Wed 15/4

08:25-20:00

1 stop16h 35m

Miami

Sun 26/4

21:45-22:25

2 stops19h 40m

£523

Flights are sorted by cheapest return flights first.

Deals found on 23/2

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 20 February 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 7 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 6 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 Friday (30 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (20 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 KLM.

British Airways
British Airways
From £130
Virgin Atlantic
Virgin Atlantic
From £370
Finnair
Finnair
From £356
TAP AIR PORTUGAL
TAP AIR PORTUGAL
From £324

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 27 February 2026.
Get a feel of what it's like to fly with KLM, Finnair, andVirgin Atlantic 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.
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,461 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Finnair
7.6
Good
1,369 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
679 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Norse Atlantic UK
7.3
Good
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,772 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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, Delta 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 £249, however they can be found for as little as £20.

  • 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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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.

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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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