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Cheap flights from London to Key Largo from £444

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
28 Jul — 4 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Key Largo are usually found in September or January, booked 82 days in advance, depart on a Wednesday or Tuesday 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 28 June 2026.

Thu 3/910:55
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Wed 30/918:05
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 27/6£470
Tue 28/715:15
LHR
-
MIA
1 stop14h 40m
Delta
Thu 6/810:35
MIA
-
LHR
1 stop14h 50m
Delta
Deal found 27/6£473
Fri 11/910:25
LGW
-
MIA
1 stop12h 25m
Virgin Atlantic
Wed 23/920:10
MIA
-
LGW
1 stop14h 50m
Virgin Atlantic
Deal found 27/6£473
Thu 29/1006:30
LHR
-
MIA
1 stop13h 45m
Virgin Atlantic
Sat 7/1119:30
MIA
-
LHR
2 stops30h 20m
Virgin Atlantic
Deal found 27/6£473
Sat 5/906:30
LHR
-
MIA
1 stop13h 15m
Virgin Atlantic
Sun 13/918:05
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 28/6£474
Fri 25/909:25
LGW
-
MIA
1 stop13h 00m
SWISS
Mon 28/919:40
MIA
-
LGW
1 stop17h 10m
SWISS
Deal found 25/6£474
Fri 11/920:55
LHR
-
MIA
1 stop22h 50m
Virgin Atlantic
Wed 23/911:29
MIA
-
LHR
2 stops15h 11m
Virgin Atlantic
Deal found 26/6£475
Thu 24/1213:30
LHR
-
MIA
1 stop13h 35m
British Airways
Fri 15/122:00
MIA
-
LHR
Nonstop8h 30m
British Airways
Deal found 25/6£476
Sun 6/910:25
LGW
-
MIA
2 stops19h 22m
Virgin Atlantic
Mon 21/907:06
MIA
-
LGW
2 stops21h 34m
Virgin Atlantic
Deal found 26/6£476
Sat 12/910:55
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Sat 12/1217:59
MIA
-
LHR
1 stop11h 16m
Virgin Atlantic
Deal found 28/6£476
Sun 6/909:05
LGW
-
MIA
1 stop13h 20m
SWISS
Mon 21/919:40
MIA
-
LGW
1 stop17h 10m
SWISS
Deal found 25/6£476
Fri 2/1016:00
LHR
-
MIA
Nonstop9h 55m
Virgin Atlantic
Mon 12/1018:05
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 28/6£477

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 28 June 2026.

Round-trip from

£470

One-way from

£444

Popular in

December

Cheapest in

September

Average price

£592
Virgin Atlantic
  • Virgin Atlantic
  • 3/9-30/9
  • Nonstop
  • 18h 55m total
  • London to Key Largo
Search Deals
15/7
  • 15/7
  • 3 total stops
  • 44h 00m total
  • London to Key Largo
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 28 June 2026.
Use the filters below to find and compare flights from London to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 1/11

06:30-15:00

1 stop13h 30m

Miami

Fri 13/11

12:45-07:50

1 stop14h 05m

£479

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 22/10

18:40-20:00

1 stop30h 20m

Miami

Sat 31/10

21:40-09:20

1 stop31h 40m

£482

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 24/9

06:30-14:45

1 stop13h 15m

Miami

Mon 28/9

15:23-08:50

1 stop12h 27m

£495

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 22/10

20:50-20:00

1 stop28h 10m

Miami

Sat 31/10

21:40-09:10

1 stop31h 30m

£496

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 18/12

15:00-20:25

Nonstop10h 25m

Miami

Mon 28/12

22:15-11:55

Nonstop8h 40m

£506
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 1/12

14:30-19:30

Nonstop10h 00m

Miami

Sun 13/12

22:00-11:30

Nonstop8h 30m

£507

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 3/11

07:45-15:00

1 stop12h 15m

Miami

Thu 12/11

17:15-08:50

1 stop10h 35m

£508

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 27/8

07:45-14:45

1 stop12h 00m

Miami

Tue 22/9

16:55-08:50

1 stop10h 55m

£511

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 31/10

07:00-18:30

2 stops15h 30m

Miami

Sat 7/11

19:50-18:40

2 stops17h 50m

£513

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 30/10

10:00-20:30

1 stop14h 30m

Miami

Mon 9/11

21:45-16:25

1 stop13h 40m

£516

Flights are sorted by cheapest return flights first.

Deals found on 26/6

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

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

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 28 June 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 28 June 2026.

The most flights from LON to KE9 are scheduled on a Friday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).

How much does it cost for a return flight from London to Key Largo?

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 28 June 2026.
Read through reviews of airlines operating flights from London to Key Largo, such as Finnair,Virgin Atlantic, andNorse Atlantic UK. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Finnair
7.6
Good
1,415 reviews
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Virgin Atlantic
7.5
Good
690 reviews
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Norse Atlantic UK
7.2
Good
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
American Airlines
7.1
Good
11,779 reviews
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
British Airways
6.7
Okay
8,074 reviews
Finnair
7.6
Good
1,415 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.7

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

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?

    Delta, LEVEL, and Virgin Atlantic can get you from London to Key Largo in just under 10h 25m. Your travel time can differ by up to 19h 55m. London and Key Largo are separated by a distance of 4414 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 (£181), TAP AIR PORTUGAL (£254), and Aer Lingus (£297).

  • 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 Stansted - 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: Malaysia Airlines (92%), Gulf Air (92%), KLM (88%).

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

    The cheapest flight price from London to Key Largo is £358. On average you can expect to pay £1,653. The most popular route, (London Heathrow - Miami), can usually be booked for £113.

  • 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.

See more FAQs

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Alternative routes for London to Key Largo

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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 28 June 2026.
AirlineCheapestAverageFlexibilityOn-time
A.P.G.Cheapest£222Average£400FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
Norse Atlantic UKCheapest£275Average£440FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£302Average£385FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£304Average£371FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£314Average£667FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£314Average£595FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapest£316Average£374FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£356Average£526FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air EuropaCheapest£360Average£484FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
United AirlinesCheapest£361Average£540FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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