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Cheap flights from London to Key Largo from £362

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 17/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
2 Feb — 9 Feb1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Key Largo are usually found in September or May, booked 52 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from London to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from London to Key Largo
Explore the most affordable flight options available from London to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 January 2026.

Mon 19/109:35STN - MIA
2 stops34h 15mMultiple Airlines
Mon 26/116:35MIA - STN
2 stops22h 25mMultiple Airlines
Deal found 2/1£414
Sun 4/1011:20LHR - MIA
Nonstop9h 55mDelta
Mon 19/1018:05MIA - LHR
Nonstop9h 00mDelta
Deal found 2/1£414
Fri 27/210:00LGW - MIA
1 stop14h 30mAir Europa
Sun 8/322:45MIA - LGW
1 stop30h 15mAir Europa
Deal found 2/1£414
Wed 16/909:15LCY - MIA
1 stop13h 10mSWISS
Mon 28/919:40MIA - LCY
1 stop18h 00mSWISS
Deal found 3/1£414
Wed 14/1010:00LHR - MIA
1 stop16h 50mUnited Airlines
Mon 19/1014:30MIA - LHR
1 stop11h 45mUnited Airlines
Deal found 2/1£414
Mon 4/510:00LGW - MIA
1 stop13h 45mAir Europa
Mon 18/521:30MIA - LGW
1 stop13h 55mAir Europa
Deal found 3/1£414
Fri 20/212:05LHR - MIA
1 stop28h 11mLufthansa
Sat 7/316:49MIA - LHR
2 stops32h 51mLufthansa
Deal found 3/1£415
Sun 1/210:40LGW - MIA
1 stop33h 10mTAP AIR PORTUGAL
Sun 15/223:50MIA - LGW
2 stops15h 45mTAP AIR PORTUGAL
Deal found 2/1£415
Fri 9/112:00LHR - MIA
2 stops16h 59mMultiple Airlines
Thu 22/112:20MIA - LHR
1 stop15h 10mMultiple Airlines
Deal found 2/1£416
Tue 13/111:55LGW - MIA
1 stop14h 00mIcelandair
Fri 23/117:15MIA - LGW
1 stop12h 40mIcelandair
Deal found 2/1£416
Tue 13/119:15LCY - MIA
1 stop23h 40mBritish Airways
Thu 29/115:35MIA - LCY
1 stop12h 15mBritish Airways
Deal found 3/1£417
Mon 13/719:25LHR - MIA
1 stop25h 40mBritish Airways
Thu 23/717:00MIA - LHR
Nonstop8h 55mBritish Airways
Deal found 2/1£417

Find flight deals from London to Key Largo

Keep the following information in mind while searching for London to Key Largo flight deals. Data was last updated 3 January 2026.

Round-trip from

£414

One-way from

£362

Popular in

December

Cheapest in

September

Average price

£464
19/1-26/1
  • 19/1-26/1
  • 4 total stops
  • 56h 40m total
  • London to Key Largo
Search Deals
22/1
  • 22/1
  • 1 total stop
  • 16h 50m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£19 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 round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Key Largo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 January 2026.
Use the filters below to find and compare flights from London to Key Largo that are best for you.

Fly from

London

Fly to

Key Largo

Route

Depart

Return

Price

LondonMiami

LCY - MIA

LCYMIA

London City

Mon 9/2

20:05-14:50

1 stop23h 45m

Miami

Wed 25/2

12:03-08:50

2 stops15h 47m

£419

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 1/6

11:20-16:15

Nonstop9h 55m

Miami

Wed 10/6

14:03-06:45

1 stop11h 42m

£420

LondonMiami

LCY - MIA

LCYMIA

London City

Wed 21/1

09:10-18:00

1 stop13h 50m

Miami

Sun 25/1

17:36-08:50

2 stops34h 14m

£422

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 17/2

09:20-00:53

2 stops20h 33m

Miami

Tue 10/3

17:50-08:50

1 stop11h 00m

£423

LondonMiami

LCY - MIA

LCYMIA

London City

Mon 16/2

07:45-00:53

2 stops22h 08m

Miami

Mon 23/2

19:26-16:35

2 stops16h 09m

£424

LondonMiami

LCY - MIA

LCYMIA

London City

Sun 25/1

13:45-20:44

2 stops35h 59m

Miami

Wed 4/2

10:33-07:15

2 stops15h 42m

£424

LondonMiami

LCY - MIA

LCYMIA

London City

Wed 28/1

10:00-21:41

2 stops16h 41m

Miami

Wed 4/2

12:00-07:15

2 stops14h 15m

£424

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 13/1

07:45-00:51

2 stops22h 06m

Miami

Thu 29/1

16:50-09:30

1 stop11h 40m

£424

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 27/1

07:45-10:24

2 stops31h 39m

Miami

Sun 1/2

19:59-07:15

2 stops30h 16m

£424

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 17/2

09:20-20:44

2 stops16h 24m

Miami

Tue 24/2

13:28-09:30

2 stops15h 02m

£424

Flights are sorted by cheapest return flights first.

Deals found on 31/12

Showing 1-10 of 60 results
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Best time to book a flight from London to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from London 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 from London to Key Largo

How far ahead should I book a flight from London 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 26 December 2025.

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Key Largo?

Currently, May is the cheapest month in which you can book a flight from London to Key Largo (average of £229). Flying from London to Key Largo in July is currently the most expensive (average of £351). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to KE9?

Find hourly flight availability from London to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Key Largo as you normally would.

Weekly flight availability from London to Key Largo

Explore weekly flight availability from London to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 January 2026.

The most flights from LON to KE9 are scheduled on a Friday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 on average).

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 3 January 2026.
Read through reviews of airlines operating flights from London to Key Largo, such as KLM, Finnair, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,435 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Finnair
7.6
Good
1,343 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Norse Atlantic UK
7.2
Good
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,641 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Food

7.2

Overall

7.7

Entertainment

7.1

Comfort

7.6

Crew

8.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from London to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Key Largo?

    Virgin Atlantic, British Airways, and Delta can get you from London to Key Largo in just under 13h 50m. Your travel time can differ by up to 9h 55m. London and Key Largo are separated by a distance of 4435 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from London to Key Largo one-way?

    The cheapet airlines for a one-way flight from London to Key Largo are Norse Atlantic UK (£147), Scandinavian Airlines (£176), and A.P.G. (£215).

  • What are the most popular routes from London to Key Largo?

    When deciding which route to take from London to Key Largo consider London Heathrow - Miami, London Gatwick - Miami or London City - Miami as they are the most popular.

  • What are the most reliable airlines from London to Key Largo?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Key Largo on time: KLM (88%), Air France (88%), Delta (88%).

  • What are the cheapest flights from London to Key Largo?

    The cheapest flight price from London to Key Largo is £330. On average you can expect to pay £1,610. The most popular route, (London Heathrow - Miami), can usually be booked for £126.

  • Can I find deals for flights from London to Key Largo that include hotel bookings?

    Yes. In addition to deals on London to Key Largo flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Key Largo.

  • Can I find deals for business class flights from London to Key Largo?

    Yes. Cheapflights offers flight deals from London to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Key Largo?

    Currently, May is the cheapest month in which you can book a flight from London to Key Largo (average of £229). Flying from London to Key Largo in July is currently the most expensive (average of £351). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from London to Key Largo

Discover the top 10 airlines that operate flights from London to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£274Average£412FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
DeltaCheapest£295Average£622FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£296Average£390FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£298Average£468FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£310Average£364FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£328Average£485FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapest£341Average£463FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
A.P.G.Cheapest£342Average£543FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
United AirlinesCheapest£343Average£506FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air EuropaCheapest£353Average£452FlexibilityNo cancel feeOn-time83%
Search Air Europa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Key Largo?

Deals for London to Key Largo flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London 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 from London to Key Largo.

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

Need flexible booking options for your flight to Key Largo from London? 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 from London to Key Largo become cheaper?

Of course! You can now track prices for flights from London to Key Largo and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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