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Cheap flights from London to Key Largo from £424

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 14/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
13 Jul — 20 Jul1
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 13 June 2026.

Mon 20/717:50
LCY
-
MIA
1 stop25h 55m
Virgin Atlantic
Mon 27/711:30
MIA
-
LCY
2 stops17h 00m
Virgin Atlantic
Deal found 12/6£523
Sat 11/719:30
LHR
-
MIA
2 stops28h 57m
British Airways
Tue 21/713:30
MIA
-
LHR
1 stop12h 25m
British Airways
Deal found 8/6£523
Thu 3/905:40
LTN
-
MIA
2 stops19h 45m
Multiple Airlines
Wed 16/919:45
MIA
-
LTN
2 stops21h 55m
Multiple Airlines
Deal found 10/6£523
Tue 7/717:00
LGW
-
MIA
2 stops35h 37m
Air France
Tue 28/720:10
MIA
-
LGW
1 stop14h 50m
Air France
Deal found 9/6£523
Thu 17/908:25
LCY
-
MIA
2 stops19h 36m
Virgin Atlantic
Wed 30/911:49
MIA
-
LCY
2 stops15h 06m
Virgin Atlantic
Deal found 11/6£524
Wed 9/908:20
STN
-
MIA
1 stop15h 25m
Multiple Airlines
Tue 22/921:30
MIA
-
STN
1 stop13h 30m
Multiple Airlines
Deal found 10/6£524
Mon 7/909:30
LHR
-
MIA
2 stops34h 16m
Air Canada
Wed 23/908:15
MIA
-
LHR
1 stop17h 15m
Air Canada
Deal found 10/6£524
Tue 14/707:45
LCY
-
MIA
1 stop12h 00m
Virgin Atlantic
Tue 28/711:30
MIA
-
LCY
2 stops14h 45m
Virgin Atlantic
Deal found 12/6£525
Tue 7/708:55
LHR
-
MIA
1 stop13h 55m
Delta
Mon 13/718:05
MIA
-
LHR
Nonstop9h 00m
Delta
Deal found 8/6£525
Thu 1/1005:40
LTN
-
MIA
2 stops20h 09m
Multiple Airlines
Sat 10/1013:10
MIA
-
LTN
2 stops18h 10m
Multiple Airlines
Deal found 10/6£525
Wed 17/620:40
LGW
-
MIA
1 stop23h 25m
Iberia
Sun 28/616:55
MIA
-
LGW
1 stop12h 55m
Iberia
Deal found 10/6£525
Tue 7/707:45
LCY
-
MIA
1 stop12h 00m
Virgin Atlantic
Tue 28/716:55
MIA
-
LCY
1 stop10h 55m
Virgin Atlantic
Deal found 9/6£526

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 13 June 2026.

Round-trip from

£523

One-way from

£424

Popular in

December

Cheapest in

September

Average price

£570
Virgin Atlantic
  • Virgin Atlantic
  • 20/7-27/7
  • 3 total stops
  • 42h 55m total
  • London to Key Largo
Search Deals
14/8
  • 14/8
  • 3 total stops
  • 36h 10m 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 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 13 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

Fri 14/8

09:55-01:07

2 stops20h 12m

Miami

Tue 25/8

08:50-06:45

2 stops16h 55m

£523

LondonMiami

LCY - MIA

LCYMIA

London City

Mon 7/12

17:50-15:00

1 stop26h 10m

Miami

Mon 14/12

17:59-16:35

2 stops17h 36m

£524
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 4/7

15:50-20:45

Nonstop9h 55m

Miami

Sat 11/7

22:35-12:35

Nonstop9h 00m

£526

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 23/8

08:55-20:45

1 stop16h 50m

Miami

Sun 30/8

07:03-07:15

1 stop19h 12m

£526

LondonMiami

LCY - MIA

LCYMIA

London City

Fri 10/7

07:45-23:35

2 stops20h 50m

Miami

Mon 13/7

11:30-09:30

2 stops17h 00m

£529

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 11/8

07:45-14:45

1 stop12h 00m

Miami

Tue 18/8

11:50-07:15

2 stops14h 25m

£529

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 7/7

10:00-23:37

2 stops18h 37m

Miami

Thu 16/7

16:55-18:30

1 stop20h 35m

£529

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Mon 5/10

10:25-21:00

2 stops15h 35m

Miami

Sat 17/10

11:15-09:20

2 stops17h 05m

£530

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 8/10

06:50-18:52

2 stops17h 02m

Miami

Sun 11/10

13:25-11:20

2 stops16h 55m

£533

LondonMiami

STN - MIA

STNMIA

London Stansted

Sat 12/9

15:25-19:45

2 stops33h 20m

Miami

Sat 3/10

21:35-23:20

2 stops20h 45m

£535

Flights are sorted by cheapest return flights first.

Deals found on 12/6

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 13 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 13 June 2026.

The most flights from LON to KE9 are scheduled on a Monday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 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 13 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
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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
7.7
Good
1,408 reviews
Finnair
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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
689 reviews
Finnair
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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
11,650 reviews
Finnair
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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
8,047 reviews
Finnair
7.7
Good
1,408 reviews
Check prices

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Overall

7.7

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?

    Delta, Virgin Atlantic, and KLM can get you from London to Key Largo in just under 9h 55m. Your travel time can differ by up to 16h 15m. 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 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 (93%), Gulf Air (92%), KLM (85%).

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

    The cheapest flight price from London to Key Largo is £367. On average you can expect to pay £1,648. The most popular route, (London Heathrow - Miami), can usually be booked for £345.

  • 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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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 13 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£267Average£418FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£297Average£379FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£299Average£365FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£309Average£658FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£311Average£371FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
A.P.G.Cheapest£323Average£394FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
TAP AIR PORTUGALCheapest£346Average£513FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air EuropaCheapest£354Average£472FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
United AirlinesCheapest£356Average£533FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£359Average£548FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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