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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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
11 Mar — 18 Mar1
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 9 February 2026.

Tue 3/314:30
LHR
-
MIA
Nonstop10h 00m
British Airways
Tue 24/323:00
MIA
-
LHR
Nonstop8h 30m
British Airways
Deal found 7/2£375
Tue 10/212:05
LHR
-
MIA
1 stop34h 25m
SWISS
Tue 24/219:50
MIA
-
LHR
1 stop12h 10m
SWISS
Deal found 4/2£377
Tue 1/1211:55
LGW
-
MIA
1 stop14h 00m
Icelandair
Fri 18/1217:15
MIA
-
LGW
1 stop12h 40m
Icelandair
Deal found 8/2£382
Thu 5/1111:55
LGW
-
MIA
1 stop14h 00m
Icelandair
Sun 8/1117:15
MIA
-
LGW
1 stop12h 40m
Icelandair
Deal found 8/2£383
Mon 6/409:15
LHR
-
MIA
1 stop16h 10m
Iberia
Mon 20/422:10
MIA
-
LHR
1 stop15h 05m
Iberia
Deal found 5/2£383
Tue 10/311:55
LGW
-
MIA
1 stop14h 00m
Icelandair
Wed 25/318:15
MIA
-
LGW
1 stop12h 40m
Icelandair
Deal found 5/2£383
Thu 7/515:35
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 14/522:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 5/2£386
Sat 21/1111:55
LGW
-
MIA
1 stop14h 00m
Icelandair
Fri 4/1217:15
MIA
-
LGW
1 stop12h 40m
Icelandair
Deal found 5/2£386
Fri 27/220:35
LHR
-
MIA
2 stops29h 57m
Multiple Airlines
Wed 4/313:21
MIA
-
LHR
2 stops16h 29m
Multiple Airlines
Deal found 5/2£388
Thu 5/1112:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Sun 22/1117:15
MIA
-
LHR
1 stop21h 15m
Icelandair
Deal found 7/2£391
Mon 23/212:00
LHR
-
MIA
1 stop15h 19m
United Airlines
Mon 2/314:15
MIA
-
LHR
1 stop16h 00m
United Airlines
Deal found 6/2£393
Sun 25/1018:40
LHR
-
MIA
1 stop28h 25m
Scandinavian Airlines
Mon 16/1119:55
MIA
-
LHR
1 stop32h 25m
Scandinavian Airlines
Deal found 5/2£394

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 9 February 2026.

Return from

£375

One-way from

£326

Popular in

December

Cheapest in

September

Average price

£458
British Airways
  • British Airways
  • 3/3-24/3
  • Nonstop
  • 18h 30m total
  • London to Miami
Search Deals
SWISS
  • SWISS
  • 28/4
  • 1 total stop
  • 13h 10m 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 (£13 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 9 February 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 17/3

12:15-21:55

1 stop13h 40m

Miami

Wed 25/3

18:15-10:50

1 stop12h 35m

£410

LondonMiami

LTN - MIA

LTNMIA

London Luton

Tue 17/3

07:30-20:30

2 stops41h 00m

Miami

Tue 24/3

22:45-21:45

2 stops19h 00m

£444

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Mon 13/4

15:40-21:55

1 stop35h 15m

Miami

Fri 24/4

18:15-14:40

1 stop15h 25m

£448

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 10/3

06:00-15:50

1 stop13h 50m

Miami

Fri 20/3

00:35-18:55

1 stop14h 20m

£451

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 26/2

10:00-19:30

1 stop14h 30m

Miami

Tue 10/3

22:45-16:25

1 stop13h 40m

£459

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 27/2

10:00-19:30

1 stop14h 30m

Miami

Wed 4/3

21:45-16:25

1 stop13h 40m

£459

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 28/2

10:00-19:30

1 stop14h 30m

Miami

Thu 5/3

21:45-16:25

1 stop13h 40m

£459

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 26/2

10:00-19:30

1 stop14h 30m

Miami

Thu 5/3

21:45-16:25

1 stop13h 40m

£459

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 28/2

10:00-19:30

1 stop14h 30m

Miami

Sun 8/3

22:45-16:25

1 stop13h 40m

£459

LondonMiami

STN - MIA

STNMIA

London Stansted

Wed 25/2

05:55-19:30

1 stop18h 35m

Miami

Tue 3/3

21:45-20:15

1 stop17h 30m

£462

Flights are sorted by cheapest return flights first.

Deals found on 6/2

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 6 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 39 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 14 hours 5 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 Saturday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 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 £298
Virgin Atlantic
Virgin Atlantic
From £366
Finnair
Finnair
From £353
TAP AIR PORTUGAL
TAP AIR PORTUGAL
From £322

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 9 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
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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
1,450 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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
1,357 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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
7.3
Good
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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
7,721 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

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 £247, 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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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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