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Cheap flights from London to Key Largo from £262

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — MIA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Key Largo are usually found in September or May, booked 52 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Find 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 31 October 2025.

Mon 1/1221:05LHR - MIA
2 stops26h 00mScandinavian Airlines
Thu 4/1219:55MIA - LHR
2 stops39h 30mScandinavian Airlines
Deal found 30/10£399
Sat 22/1115:35LHR - MIA
2 stops31h 30mScandinavian Airlines
Wed 3/1219:55MIA - LHR
1 stop16h 05mScandinavian Airlines
Deal found 29/10£400
Wed 19/1108:15LHR - MIA
1 stop18h 35mTAP AIR PORTUGAL
Fri 28/1123:35MIA - LHR
1 stop12h 55mTAP AIR PORTUGAL
Deal found 29/10£401
Sat 6/1217:30LHR - MIA
1 stop29h 35mScandinavian Airlines
Tue 9/1219:55MIA - LHR
1 stop16h 45mScandinavian Airlines
Deal found 30/10£401
Mon 8/1206:40LHR - MIA
1 stop16h 25mScandinavian Airlines
Tue 23/1219:55MIA - LHR
1 stop15h 05mScandinavian Airlines
Deal found 30/10£403
Thu 4/1219:55LHR - MIA
1 stop30h 25mTAP AIR PORTUGAL
Mon 12/116:35MIA - LHR
1 stop25h 05mTAP AIR PORTUGAL
Deal found 30/10£404
Thu 4/1218:30LHR - MIA
1 stop25h 20mTAP AIR PORTUGAL
Sun 14/1223:50MIA - LHR
1 stop12h 40mTAP AIR PORTUGAL
Deal found 29/10£406
Fri 21/1119:00STN - MIA
2 stops27h 30mMultiple Airlines
Mon 1/1208:00MIA - STN
2 stops31h 55mMultiple Airlines
Deal found 29/10£407
Mon 3/1120:35LHR - MIA
1 stop29h 20mIcelandair
Wed 12/1117:15MIA - LHR
1 stop21h 15mIcelandair
Deal found 29/10£408
Fri 5/1214:00LGW - MIA
2 stops32h 30mMultiple Airlines
Mon 8/1208:00MIA - LGW
2 stops24h 50mMultiple Airlines
Deal found 30/10£409
Mon 17/1120:35LHR - MIA
1 stop29h 20mIcelandair
Wed 26/1117:15MIA - LHR
1 stop21h 15mIcelandair
Deal found 29/10£410
Tue 25/1108:30LGW - MIA
1 stop15h 25mMultiple Airlines
Tue 2/1221:10MIA - LGW
1 stop16h 25mMultiple Airlines
Deal found 28/10£411

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 31 October 2025.

Round-trip from

£398

One-way from

£272

Popular in

December

Cheapest in

September

Average price

£543
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 13/1-30/1
  • 3 total stops
  • 58h 45m total
  • London to Key Largo
Search Deals
24/1
  • 24/1
  • 1 total stop
  • 16h 40m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 31 October 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

LHR - MIA

LHRMIA

London Heathrow

Tue 10/3

19:50-19:35

2 stops27h 45m

Miami

Wed 18/3

20:55-18:50

2 stops17h 55m

£411

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Tue 25/11

08:30-18:55

1 stop15h 25m

Miami

Tue 2/12

21:10-18:35

1 stop16h 25m

£411

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 17/1

17:00-18:35

2 stops30h 35m

Miami

Wed 4/2

20:40-21:40

2 stops20h 00m

£414

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 7/3

08:30-18:55

1 stop15h 25m

Miami

Thu 12/3

21:10-19:25

1 stop18h 15m

£420

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 10/1

08:30-18:55

1 stop15h 25m

Miami

Sat 24/1

21:10-19:10

1 stop17h 00m

£423

LondonMiami

STN - MIA

STNMIA

London Stansted

Mon 2/2

09:35-14:50

2 stops34h 15m

Miami

Mon 9/2

16:35-20:00

2 stops22h 25m

£425

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 5/3

19:50-18:35

2 stops27h 45m

Miami

Sat 21/3

20:55-18:30

1 stop17h 35m

£436

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 6/12

11:55-20:55

1 stop14h 00m

Miami

Wed 17/12

17:15-10:55

1 stop12h 40m

£441

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 12/2

11:55-20:55

1 stop14h 00m

Miami

Wed 25/2

17:15-10:55

1 stop12h 40m

£441

LondonMiami

STN - MIA

STNMIA

London Stansted

Sat 22/11

21:00-15:00

1 stop23h 00m

Miami

Sun 30/11

16:05-12:30

1 stop15h 25m

£445

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 60 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 24 October 2025.

Booking 52 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, May is the cheapest month in which you can book a flight from London to Key Largo (average of £234). Flying from London to Key Largo in July is currently the most expensive (average of £359). 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 31 October 2025.

A simple way to save on the total cost of your ticket is to fly from London to Key Largo in the afternoon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the evening.

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 Monday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 31 October 2025.
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
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.5
Good
671 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Norse Atlantic UK
7.2
Good
Finnair
7.6
Good
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
TAP AIR PORTUGAL
7.1
Good
2,040 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,487 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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?

    Scandinavian Airlines, Icelandair, and United Airlines can get you from London to Key Largo in just under 13h 30m. Your travel time can differ by up to 14h 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 LEVEL (£284), British Airways (£287), and SWISS (£313).

  • 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: Gulf Air (80%), Malaysia Airlines (77%), KLM (73%).

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

    The cheapest flight price from London to Key Largo is £339. On average you can expect to pay £1,506. The most popular route, (London Heathrow - Miami), can usually be booked for £351.

  • 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, May is the cheapest month in which you can book a flight from London to Key Largo (average of £234). Flying from London to Key Largo in July is currently the most expensive (average of £359). 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

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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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£281Average£420FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
SWISSCheapest£305Average£479FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£319Average£382FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£319Average£415FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£333Average£489FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
A.P.G.Cheapest£349Average£556FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
United AirlinesCheapest£351Average£529FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£351Average£488FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air EuropaCheapest£361Average£463FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
British AirwaysCheapest£362Average£508FlexibilityNo cancel feeOn-time70%
Search British Airways 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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