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Cheap flights from London to Key Largo from £445

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
5 Aug — 12 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 36 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 6 July 2026.

Tue 22/915:10
STN
-
MIA
2 stops28h 25m
Multiple Airlines
Tue 29/916:20
MIA
-
STN
2 stops23h 35m
Multiple Airlines
Deal found 2/7£465
Wed 2/920:35
LTN
-
MIA
2 stops27h 10m
Multiple Airlines
Sun 13/921:30
MIA
-
LTN
2 stops17h 25m
Multiple Airlines
Deal found 2/7£465
Wed 30/912:15
STN
-
MIA
2 stops35h 30m
Multiple Airlines
Tue 6/1021:30
MIA
-
STN
2 stops18h 25m
Multiple Airlines
Deal found 1/7£466
Fri 11/910:55
LGW
-
MIA
1 stop14h 05m
LEVEL
Mon 21/922:00
MIA
-
LGW
1 stop31h 15m
LEVEL
Deal found 2/7£466
Sun 6/913:45
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Mon 7/916:20
MIA
-
LHR
1 stop15h 25m
TAP AIR PORTUGAL
Deal found 4/7£468
Tue 1/1212:15
LHR
-
MIA
1 stop13h 35m
Icelandair
Sun 6/1217:15
MIA
-
LHR
1 stop12h 35m
Icelandair
Deal found 3/7£469
Thu 1/1015:25
LGW
-
MIA
1 stop33h 35m
LEVEL
Wed 7/1022:00
MIA
-
LGW
1 stop16h 10m
LEVEL
Deal found 1/7£469
Fri 2/1009:55
LHR
-
MIA
1 stop15h 05m
LEVEL
Fri 23/1022:00
MIA
-
LHR
1 stop31h 10m
LEVEL
Deal found 3/7£469
Mon 31/819:55
STN
-
MIA
2 stops27h 50m
Multiple Airlines
Wed 9/921:30
MIA
-
STN
2 stops22h 15m
Multiple Airlines
Deal found 3/7£470
Mon 9/1120:35
LHR
-
MIA
1 stop29h 15m
Icelandair
Wed 18/1117:15
MIA
-
LHR
1 stop21h 15m
Icelandair
Deal found 1/7£470
Fri 6/1115:25
LGW
-
MIA
1 stop33h 30m
LEVEL
Sat 14/1121:40
MIA
-
LGW
1 stop29h 40m
LEVEL
Deal found 30/6£470
Tue 13/1012:45
LTN
-
MIA
2 stops30h 50m
Multiple Airlines
Tue 20/1016:20
MIA
-
LTN
2 stops17h 30m
Multiple Airlines
Deal found 5/7£472

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 6 July 2026.

Round-trip from

£465

One-way from

£445

Popular in

December

Cheapest in

September

Average price

£597
22/9-29/9
  • 22/9-29/9
  • 4 total stops
  • 52h 00m total
  • London to Key Largo
Search Deals
11/8
  • 11/8
  • 2 total stops
  • 30h 28m 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 (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 6 July 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

LGW - MIA

LGWMIA

London Gatwick

Thu 1/10

15:25-20:00

1 stop33h 35m

Miami

Mon 5/10

22:00-12:15

1 stop33h 15m

£469

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 15/10

14:30-20:00

1 stop34h 30m

Miami

Fri 23/10

22:00-10:20

1 stop31h 20m

£486

LondonMiami

LTN - MIA

LTNMIA

London Luton

Tue 1/9

08:00-20:05

1 stop17h 05m

Miami

Wed 30/9

16:55-13:55

1 stop16h 00m

£499

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 6/11

20:50-19:55

1 stop28h 05m

Miami

Thu 12/11

02:45-09:10

1 stop25h 25m

£499

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 2/9

08:40-17:25

1 stop13h 45m

Miami

Sun 13/9

19:59-20:40

1 stop19h 41m

£502

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 16/9

08:40-17:25

1 stop13h 45m

Miami

Wed 14/10

12:29-10:25

2 stops16h 56m

£503

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 3/9

10:00-18:45

1 stop13h 45m

Miami

Tue 8/9

21:30-09:00

1 stop30h 30m

£517

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 22/8

11:30-20:05

1 stop13h 35m

Miami

Mon 7/9

15:00-07:50

1 stop11h 50m

£519

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 25/9

07:30-18:52

2 stops16h 22m

Miami

Mon 5/10

08:54-06:55

2 stops17h 01m

£525

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 29/8

06:30-14:45

1 stop13h 15m

Miami

Sat 26/9

22:35-12:35

Nonstop9h 00m

£528

Flights are sorted by cheapest return flights first.

Deals found on 2/7

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 6 July 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 6 July 2026.

The most flights from LON to KE9 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 (20 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 6 July 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
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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
1,419 reviews
Finnair
7.6
Good
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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
691 reviews
Finnair
7.6
Good
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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
11,783 reviews
Finnair
7.6
Good
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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
8,096 reviews
Finnair
7.6
Good
1,419 reviews
Check prices

Food

6.7

Overall

7.6

Crew

8.2

Comfort

7.4

Boarding

7.7

Entertainment

6.9

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?

    LEVEL, United Airlines, and Air Europa can get you from London to Key Largo in just under 13h 45m. Your travel time can differ by up to 19h 50m. 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 (£179), TAP AIR PORTUGAL (£251), and Aer Lingus (£293).

  • 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: Malaysia Airlines (87%), Gulf Air (86%), KLM (81%).

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

    The cheapest flight price from London to Key Largo is £354. On average you can expect to pay £2,196. The most popular route, (London Heathrow - Miami), can usually be booked for £397.

  • 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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
A.P.G.Cheapest£219Average£395FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
Norse Atlantic UKCheapest£269Average£441FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£298Average£381FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£300Average£368FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£310Average£660FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£310Average£590FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapest£312Average£373FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£357Average£529FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£360Average£544FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£361Average£525FlexibilityNo cancel feeOn-time76%
Search Finnair 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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