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Cheap flights from London to Key Largo from £436

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
11 Aug — 18 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 12 July 2026.

Thu 1/1006:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 11/1016:20
MIA
-
LHR
1 stop25h 35m
TAP AIR PORTUGAL
Deal found 7/7£465
Sun 11/1022:05
STN
-
MIA
2 stops21h 30m
Multiple Airlines
Fri 23/1000:20
MIA
-
STN
2 stops28h 35m
Multiple Airlines
Deal found 11/7£466
Wed 7/1009:40
LTN
-
MIA
1 stop15h 20m
Multiple Airlines
Wed 14/1022:00
MIA
-
LTN
1 stop19h 40m
Multiple Airlines
Deal found 10/7£466
Fri 18/906:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sat 26/916:20
MIA
-
LHR
1 stop15h 25m
TAP AIR PORTUGAL
Deal found 10/7£466
Tue 8/908:00
LTN
-
MIA
1 stop15h 45m
Multiple Airlines
Tue 22/921:30
MIA
-
LTN
1 stop21h 15m
Multiple Airlines
Deal found 12/7£467
Wed 2/913:45
LHR
-
MIA
1 stop14h 40m
TAP AIR PORTUGAL
Sun 13/900:30
MIA
-
LHR
1 stop16h 30m
TAP AIR PORTUGAL
Deal found 9/7£467
Wed 2/908:20
STN
-
MIA
2 stops20h 05m
Multiple Airlines
Sun 13/900:30
MIA
-
STN
2 stops27h 15m
Multiple Airlines
Deal found 9/7£468
Thu 10/906:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 20/916:20
MIA
-
LHR
1 stop15h 25m
TAP AIR PORTUGAL
Deal found 8/7£468
Fri 30/1010:40
LGW
-
MIA
1 stop16h 05m
TAP AIR PORTUGAL
Wed 11/1116:50
MIA
-
LGW
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 8/7£468
Wed 28/1012:15
LTN
-
MIA
2 stops31h 35m
Multiple Airlines
Mon 2/1116:50
MIA
-
LTN
2 stops19h 45m
Multiple Airlines
Deal found 7/7£468
Sat 5/906:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 13/916:20
MIA
-
LHR
1 stop13h 00m
TAP AIR PORTUGAL
Deal found 11/7£468
Wed 2/916:25
LGW
-
MIA
1 stop27h 10m
TAP AIR PORTUGAL
Mon 14/916:20
MIA
-
LGW
1 stop12h 25m
TAP AIR PORTUGAL
Deal found 9/7£468

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 12 July 2026.

Round-trip from

£465

One-way from

£436

Popular in

December

Cheapest in

September

Average price

£594
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 1/10-11/10
  • 2 total stops
  • 39h 10m total
  • London to Key Largo
Search Deals
28/9
  • 28/9
  • 3 total stops
  • 27h 35m 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 12 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

LTN - MIA

LTNMIA

London Luton

Tue 15/9

13:40-18:45

1 stop34h 05m

Miami

Thu 17/9

21:30-11:50

1 stop33h 20m

£494

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Mon 26/10

16:35-15:50

1 stop27h 15m

Miami

Fri 30/10

00:50-09:50

1 stop29h 00m

£494

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 2/10

10:00-18:45

1 stop13h 45m

Miami

Mon 12/10

21:30-16:25

1 stop13h 55m

£515

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 5/9

08:45-17:25

1 stop13h 40m

Miami

Sat 12/9

08:25-06:55

2 stops17h 30m

£515

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 26/8

08:40-17:25

1 stop13h 45m

Miami

Wed 9/9

12:17-10:40

2 stops17h 23m

£516

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 26/10

09:00-18:30

1 stop13h 30m

Miami

Fri 30/10

08:58-05:55

2 stops16h 57m

£516

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 21/8

11:30-20:05

1 stop13h 35m

Miami

Fri 4/9

13:45-06:50

1 stop12h 05m

£522

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 1/10

06:50-18:52

2 stops17h 02m

Miami

Mon 12/10

13:25-13:00

2 stops18h 35m

£527

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 22/11

09:30-21:39

2 stops17h 09m

Miami

Sat 12/12

13:25-09:10

2 stops14h 45m

£539

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 13/9

09:55-14:30

Nonstop9h 35m

Miami

Sun 27/9

13:40-06:55

1 stop12h 15m

£542

Flights are sorted by cheapest return flights first.

Deals found on 7/7

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 12 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 12 July 2026.

The most flights from LON to KE9 are scheduled on a Monday (24 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (14 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 12 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
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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
1,418 reviews
Finnair
7.6
Good
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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
693 reviews
Finnair
7.6
Good
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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
11,806 reviews
Finnair
7.6
Good
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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
8,104 reviews
Finnair
7.6
Good
1,418 reviews
Check prices

Food

6.7

Overall

7.6

Entertainment

6.9

Crew

8.2

Comfort

7.4

Boarding

7.7

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?

    TAP AIR PORTUGAL, Air Europa, and United Airlines can get you from London to Key Largo in just under 13h 40m. Your travel time can differ by up to 13h 35m. 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 (£178), TAP AIR PORTUGAL (£250), and Aer Lingus (£292).

  • 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 (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 £338. On average you can expect to pay £2,054. The most popular route, (London Heathrow - Miami), can usually be booked for £402.

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 12 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£264Average£400FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£297Average£392FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
DeltaCheapest£309Average£658FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£309Average£592FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapest£311Average£372FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
A.P.G.Cheapest£323Average£394FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
SWISSCheapest£343Average£464FlexibilityNo cancel feeOn-time79%
Search SWISS flights
United AirlinesCheapest£356Average£539FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£359Average£529FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£360Average£532FlexibilityNo 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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