Find flights
Deals
When to book
Airlines
FAQs

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 30/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
18 Jul — 25 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 18 June 2026.

Wed 19/808:55
LHR
-
MIA
1 stop13h 55m
Delta
Fri 28/811:50
MIA
-
LHR
1 stop13h 55m
Delta
Deal found 17/6£500
Thu 9/711:30
LGW
-
MIA
2 stops17h 51m
British Airways
Sat 25/717:34
MIA
-
LGW
1 stop12h 06m
British Airways
Deal found 18/6£500
Mon 7/909:15
LCY
-
MIA
1 stop13h 15m
SWISS
Mon 5/1019:40
MIA
-
LCY
1 stop16h 50m
SWISS
Deal found 18/6£501
Thu 25/614:05
LHR
-
MIA
1 stop13h 06m
Multiple Airlines
Wed 8/711:12
MIA
-
LHR
1 stop28h 28m
Multiple Airlines
Deal found 18/6£501
Wed 9/905:40
LTN
-
MIA
2 stops18h 05m
Multiple Airlines
Wed 16/921:30
MIA
-
LTN
2 stops20h 10m
Multiple Airlines
Deal found 16/6£501
Sat 5/910:00
LGW
-
MIA
1 stop13h 45m
Air Europa
Fri 25/921:30
MIA
-
LGW
1 stop13h 55m
Air Europa
Deal found 18/6£501
Wed 9/909:15
LCY
-
MIA
1 stop13h 10m
SWISS
Wed 16/919:40
MIA
-
LCY
1 stop11h 55m
SWISS
Deal found 17/6£502
Wed 9/910:00
LGW
-
MIA
1 stop13h 45m
Air Europa
Fri 18/921:30
MIA
-
LGW
1 stop13h 55m
Air Europa
Deal found 17/6£502
Tue 18/806:30
LHR
-
MIA
1 stop13h 15m
Delta
Fri 28/811:50
MIA
-
LHR
1 stop13h 55m
Delta
Deal found 17/6£503
Thu 12/1110:00
LGW
-
MIA
1 stop12h 40m
Virgin Atlantic
Mon 16/1122:45
MIA
-
LGW
1 stop12h 00m
Virgin Atlantic
Deal found 16/6£503
Wed 15/709:40
LHR
-
MIA
1 stop14h 18m
Virgin Atlantic
Mon 20/711:30
MIA
-
LHR
1 stop16h 45m
Virgin Atlantic
Deal found 16/6£503
Wed 19/808:55
LHR
-
MIA
1 stop13h 55m
Delta
Sat 29/806:40
MIA
-
LHR
1 stop25h 25m
Delta
Deal found 16/6£504

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 18 June 2026.

Round-trip from

£500

One-way from

£424

Popular in

December

Cheapest in

September

Average price

£581
Delta
  • Delta
  • 19/8-28/8
  • 2 total stops
  • 27h 50m total
  • London to Key Largo
Search Deals
30/6
  • 30/6
  • 3 total stops
  • 44h 47m 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 18 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
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 1/10

15:35-20:15

Nonstop9h 40m

Miami

Sun 4/10

17:05-06:55

Nonstop8h 50m

£505

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 16/7

10:25-20:45

1 stop15h 20m

Miami

Thu 23/7

11:30-09:25

2 stops16h 55m

£524

LondonMiami

LTN - MIA

LTNMIA

London Luton

Tue 3/11

05:55-19:55

1 stop19h 00m

Miami

Thu 19/11

21:10-11:15

2 stops33h 05m

£527

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 16/7

10:25-20:45

1 stop15h 20m

Miami

Tue 21/7

23:00-16:00

1 stop12h 00m

£530

LondonMiami

LCY - MIA

LCYMIA

London City

Mon 9/11

18:55-15:00

1 stop25h 05m

Miami

Mon 16/11

17:59-16:35

2 stops17h 36m

£533

LondonMiami

LCY - MIA

LCYMIA

London City

Sat 19/9

08:25-19:01

2 stops15h 36m

Miami

Tue 29/9

11:25-09:30

2 stops17h 05m

£533

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 24/9

11:25-22:02

2 stops39h 37m

Miami

Mon 28/9

14:00-09:00

2 stops38h 00m

£535

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 17/7

11:45-23:37

1 stop16h 52m

Miami

Fri 24/7

18:05-08:05

Nonstop9h 00m

£540

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 23/7

07:30-19:26

2 stops16h 56m

Miami

Wed 29/7

13:10-06:55

1 stop12h 45m

£550

LondonMiami

LCY - MIA

LCYMIA

London City

Wed 8/7

10:00-23:37

2 stops18h 37m

Miami

Wed 15/7

11:30-08:50

2 stops16h 20m

£553

Flights are sorted by cheapest return flights first.

Deals found on 17/6

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 18 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 18 June 2026.

The most flights from LON to KE9 are scheduled on a Tuesday (24 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 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 18 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
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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
1,412 reviews
Finnair
7.6
Good
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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
690 reviews
Finnair
7.6
Good
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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
11,689 reviews
Finnair
7.6
Good
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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
8,054 reviews
Finnair
7.6
Good
1,412 reviews
Check prices

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Entertainment

6.9

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?

    British Airways, Virgin Atlantic, and Delta can get you from London to Key Largo in just under 9h 40m. Your travel time can differ by up to 7h 12m. 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 (£250), 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 (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 £362. On average you can expect to pay £1,636. The most popular route, (London Heathrow - Miami), can usually be booked for £360.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Orlando flights
Heathrow to Miami flights
Manchester to Orlando flights
Gatwick to Orlando flights
Gatwick to Miami flights
Stansted to Orlando flights
London City to Miami flights
Stansted to Miami flights
Heathrow to Tampa flights
London City to Orlando flights
Luton to Miami flights
Gatwick to Fort Lauderdale flights
Heathrow to Fort Lauderdale flights
Luton to Orlando flights
Edinburgh to Orlando flights
Gatwick to Tampa flights
Stansted to Tampa flights
Manchester to Miami flights
London City to Tampa flights
Edinburgh to Miami flights
Manchester to Fort Lauderdale flights
Luton to Tampa flights
Birmingham to Orlando flights
Stansted to Fort Lauderdale flights
Newcastle upon Tyne to Orlando flights
London City to Fort Lauderdale flights
Heathrow to Jacksonville flights
Southend to Miami flights
Heathrow to West Palm Beach flights
Birmingham to Miami flights
Luton to Fort Lauderdale flights
Heathrow to Melbourne flights
Edinburgh to Fort Lauderdale flights
Birmingham to Tampa flights
Manchester to Melbourne flights
Heathrow to Sarasota flights
Manchester to Tampa flights
Gatwick to West Palm Beach flights
Manchester to West Palm Beach flights
Edinburgh to Tampa flights
Gatwick to Jacksonville flights
Heathrow to Pensacola flights
London City to Jacksonville flights
Leeds to Miami flights
Heathrow to Fort Myers flights
Southampton to Miami flights
Gatwick to Melbourne flights
Birmingham to Fort Lauderdale flights
Manchester to Jacksonville flights
London City to West Palm Beach flights

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 18 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£272Average£414FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£298Average£380FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£300Average£366FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£309Average£659FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£311Average£372FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
A.P.G.Cheapest£324Average£395FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
TAP AIR PORTUGALCheapest£346Average£517FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air EuropaCheapest£355Average£473FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
United AirlinesCheapest£357Average£532FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£359Average£549FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.