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£347+ 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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Key Largo in 2026

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 16 January 2026.

Return from

£390

One-way from

£347

Popular in

December

Cheapest in

September

Average price

£465
SWISS
  • SWISS
  • 26/1-9/2
  • 2 total stops
  • 29h 30m total
  • London to Miami
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21/1
  • 21/1
  • 1 total stop
  • 20h 20m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£21 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 January 2026
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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 16 January 2026.

Mon 26/109:15
LCY
-
MIA
1 stop13h 15m
SWISS
Mon 9/219:50
MIA
-
LCY
1 stop16h 15m
SWISS
Deal found 15/1£390
Wed 4/213:25
LHR
-
MIA
1 stop14h 04m
Air Canada
Mon 23/208:00
MIA
-
LHR
1 stop18h 10m
Air Canada
Deal found 15/1£390
Tue 17/311:20
LGW
-
MIA
1 stop27h 45m
British Airways
Thu 26/317:15
MIA
-
LGW
1 stop11h 45m
British Airways
Deal found 15/1£390
Wed 11/211:30
LHR
-
MIA
1 stop14h 00m
Delta
Mon 23/219:26
MIA
-
LHR
1 stop11h 14m
Delta
Deal found 14/1£391
Tue 27/110:00
LGW
-
MIA
1 stop14h 30m
Air Europa
Fri 30/121:45
MIA
-
LGW
1 stop13h 40m
Air Europa
Deal found 15/1£391
Mon 13/411:30
LHR
-
MIA
1 stop13h 55m
British Airways
Mon 27/417:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 15/1£392
Mon 13/712:20
LGW
-
MIA
1 stop13h 30m
Iberia
Thu 23/716:55
MIA
-
LGW
1 stop12h 55m
Iberia
Deal found 14/1£392
Thu 22/109:15
LCY
-
MIA
1 stop13h 15m
SWISS
Tue 27/119:50
MIA
-
LCY
1 stop16h 15m
SWISS
Deal found 14/1£392
Mon 13/407:25
LHR
-
MIA
2 stops17h 48m
Multiple Airlines
Fri 24/412:25
MIA
-
LHR
2 stops16h 35m
Multiple Airlines
Deal found 14/1£392
Mon 26/117:25
LGW
-
MIA
1 stop31h 05m
Air Europa
Mon 9/221:45
MIA
-
LGW
1 stop13h 40m
Air Europa
Deal found 14/1£392
Tue 24/1109:15
LCY
-
MIA
1 stop13h 15m
SWISS
Tue 1/1216:40
MIA
-
LCY
1 stop19h 25m
SWISS
Deal found 14/1£393
Fri 13/212:05
LHR
-
MIA
1 stop14h 54m
United Airlines
Fri 27/213:38
MIA
-
LHR
1 stop12h 02m
United Airlines
Deal found 15/1£393

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 16 January 2026.
Use the filters below to find and compare flights to Key Largo that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 10/3

08:55-18:40

1 stop13h 45m

Miami

Tue 7/4

17:40-10:15

1 stop11h 35m

£391

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 11/5

06:15-15:55

1 stop14h 40m

Miami

Sun 24/5

21:45-07:40

1 stop28h 55m

£394

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 5/2

12:30-11:57

1 stop28h 27m

Miami

Mon 9/2

16:40-09:00

1 stop11h 20m

£397

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/2

09:25-14:50

Nonstop10h 25m

Miami

Wed 11/2

21:25-11:10

Nonstop8h 45m

£399

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 9/2

14:45-20:10

Nonstop10h 25m

Miami

Thu 19/2

22:10-11:55

Nonstop8h 45m

£399

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 13/2

13:35-13:13

1 stop28h 38m

Miami

Fri 6/3

09:00-06:30

2 stops16h 30m

£400

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 18/2

10:00-19:30

1 stop14h 30m

Miami

Thu 26/2

21:45-16:25

1 stop13h 40m

£401

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Mon 16/2

10:00-19:30

1 stop14h 30m

Miami

Wed 25/2

21:45-16:25

1 stop13h 40m

£401

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Tue 17/3

10:00-20:30

1 stop14h 30m

Miami

Mon 23/3

22:45-16:25

1 stop13h 40m

£401

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 18/3

10:00-20:30

1 stop14h 30m

Miami

Wed 18/3

22:45-16:25

1 stop13h 40m

£401

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 60 results
1
2
3
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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 9 January 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 58 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 Tuesday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 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 Finnair.

British Airways
British Airways
From £303
Virgin Atlantic
Virgin Atlantic
From £372
Finnair
Finnair
From £359
TAP AIR PORTUGAL
TAP AIR PORTUGAL
From £327

What are the cheapest airlines that fly to Key Largo?

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

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 16 January 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
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,440 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Finnair
7.6
Good
1,349 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Norse Atlantic UK
7.2
Good
KLM
7.7
Good
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,680 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.2

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 £114, however they can be found for as little as £18.

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

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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.

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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