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Cheap flights from London to Key Largo from £169

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
5 May — 12 May1
1 adult

Cheapflights Tip: The best prices from London to Key Largo are usually found in September or March, booked 90 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap 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 30 April 2025.

Round-trip from

£340

One-way from

£169

Popular in

December

Cheapest in

September

Average price

£485
Norse Atlantic UK
  • Norse Atlantic UK
  • 13/6-22/6
  • Nonstop
  • 18h 00m total
  • London to Key Largo
Norse Atlantic UK
  • Norse Atlantic UK
  • 7/5
  • Nonstop
  • 9h 20m total
  • London to Key Largo
Highest demand for flights based on searches. 1% potential increase in price (£4 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in April 2025

Find flight deals from London to Key Largo

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 30 April 2025.

Fri 13/610:00LGW - MIA
Nonstop9h 20mNorse Atlantic UK
Sun 22/617:15MIA - LGW
Nonstop8h 40mNorse Atlantic UK
Deal found 29/4£340
Thu 27/1111:55LGW - MIA
1 stop14h 00mIcelandair
Fri 12/1217:15MIA - LGW
1 stop12h 40mIcelandair
Deal found 28/4£365
Tue 6/515:05LGW - MIA
1 stop13h 38mBritish Airways
Wed 14/517:03MIA - LGW
1 stop12h 37mBritish Airways
Deal found 29/4£369
Fri 13/610:00LGW - MIA
Nonstop9h 20mMultiple Airlines
Fri 8/800:25MIA - LGW
1 stop28h 20mMultiple Airlines
Deal found 28/4£371
Thu 25/908:40LHR - MIA
1 stop13h 50mSWISS
Mon 29/919:40MIA - LHR
1 stop17h 10mSWISS
Deal found 29/4£371
Thu 25/909:25LCY - MIA
1 stop13h 05mSWISS
Mon 29/919:40MIA - LCY
1 stop16h 35mSWISS
Deal found 29/4£373
Sat 20/906:30LHR - MIA
1 stop13h 10mLufthansa
Sat 20/917:51MIA - LHR
1 stop31h 04mLufthansa
Deal found 29/4£373
Thu 18/908:40LHR - MIA
1 stop13h 50mMultiple Airlines
Thu 25/916:40MIA - LHR
1 stop13h 00mMultiple Airlines
Deal found 29/4£374
Thu 18/909:25LCY - MIA
1 stop13h 05mMultiple Airlines
Thu 25/916:40MIA - LCY
1 stop18h 45mMultiple Airlines
Deal found 29/4£380
Wed 29/1006:00LHR - MIA
1 stop20h 50mTAP AIR PORTUGAL
Wed 19/1123:35MIA - LHR
1 stop14h 20mTAP AIR PORTUGAL
Deal found 30/4£380
Tue 4/1110:00LGW - MIA
1 stop14h 25mAir Europa
Tue 18/1121:45MIA - LGW
1 stop13h 40mAir Europa
Deal found 28/4£380
Fri 9/514:05LHR - MIA
1 stop15h 13mAir Canada
Mon 12/507:55MIA - LHR
1 stop21h 05mAir Canada
Deal found 29/4£388

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 30 April 2025.
Use the filters below to find and compare flights from London to Key Largo that are best for you.

Fly from

London

Fly to

Key Largo

Route

Depart

Return

Price

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 13/6

10:00-14:20

Nonstop9h 20m

Miami

Sun 22/6

17:15-06:55

Nonstop8h 40m

£340

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Fri 13/6

10:00-14:20

Nonstop9h 20m

Miami

Fri 8/8

00:25-09:45

1 stop28h 20m

£371

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 25/9

08:40-17:30

1 stop13h 50m

Miami

Mon 29/9

19:40-17:50

1 stop17h 10m

£371

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 20/9

06:30-14:40

1 stop13h 10m

Miami

Sat 20/9

17:51-05:55

1 stop31h 04m

£373

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 25/9

09:25-17:30

1 stop13h 05m

Miami

Mon 29/9

19:40-17:15

1 stop16h 35m

£373

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 18/9

08:40-17:30

1 stop13h 50m

Miami

Thu 25/9

16:40-10:40

1 stop13h 00m

£374

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 18/9

09:25-17:30

1 stop13h 05m

Miami

Thu 25/9

16:40-16:25

1 stop18h 45m

£380

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 20/9

18:45-14:45

1 stop25h 00m

Miami

Fri 26/9

00:25-17:45

1 stop12h 20m

£381

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sun 11/5

14:45-23:43

1 stop13h 58m

Miami

Wed 21/5

14:47-08:35

1 stop12h 48m

£393

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Tue 16/9

18:35-17:30

1 stop27h 55m

Miami

Fri 26/9

19:40-17:50

1 stop17h 10m

£394

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 57 results
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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

How far ahead should I book a flight from London to Key Largo?

Use this chart to determine the optimal time to book a return flight from London to Key Largo. Price data was last updated on 25 April 2025.

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Key Largo?

Currently, January is the cheapest month in which you can book a flight from London to Key Largo (average of £559). Flying from London to Key Largo in July is currently the most expensive (average of £760). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 30 April 2025.

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.

What is the cheapest day to fly from London to Key Largo?

Use this chart to determine the cheapest time to fly return from London to Key Largo. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Key Largo flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 30 April 2025.

The most flights from LON to KE9 are scheduled on a Monday (30 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 41.0 - 252.0 inches per month. September is typically the wettest month, when rainfall can reach 252.0 mm. January is typically the driest time to visit Key Largo when rainfall is around 41.0 mm.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

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 30 April 2025.
Read reviews from past customers who have flown Delta, EL AL and KLM from London to Key Largo. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
8.0
Very Good

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.
  • 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 (£169), Vueling (£205), and TAP AIR PORTUGAL (£262).

  • What are the most popular routes from London to Key Largo?

  • 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: Singapore Airlines (84%), Finnair (83%), Air France (82%).

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

    The cheapest flight price from London to Key Largo is £395. On average you can expect to pay £1,835. The most popular route, (London Heathrow - Miami), can usually be booked for £371.

  • 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.

  • What is the cheapest month to book a flight from London to Key Largo?

    Currently, January is the cheapest month in which you can book a flight from London to Key Largo (average of £559). Flying from London to Key Largo in July is currently the most expensive (average of £760). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£263Average£426FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
DeltaCheapest£282Average£523FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£330Average£437FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£342Average£505FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£344Average£523FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
SWISSCheapest£346Average£485FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapest£348Average£462FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest£360Average£533FlexibilityNo cancel feeOn-time77%
Search Air France flights
IcelandairCheapest£361Average£547FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£368Average£510FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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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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