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Cheap flights from London to Florida Keys 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — EYW
8 Jul — 15 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Florida Keys

Enter your travel dates to find the best prices.

Cheapest flights from London to Florida Keys
Explore the most affordable flight options available from London to Florida Keys. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 June 2026.

Fri 27/1109:00
LHR
-
MIA
1 stop13h 30m
SWISS
Sun 6/1216:40
MIA
-
LHR
2 stops19h 00m
SWISS
Deal found 8/6£529
Fri 3/710:45
LGW
-
MIA
1 stop14h 05m
British Airways
Mon 6/715:41
MIA
-
LGW
1 stop11h 59m
British Airways
Deal found 5/6£530
Tue 7/707:45
LCY
-
MIA
1 stop12h 00m
Virgin Atlantic
Tue 14/711:30
MIA
-
LCY
2 stops17h 00m
Virgin Atlantic
Deal found 6/6£531
Tue 18/808:30
STN
-
MIA
2 stops17h 18m
Multiple Airlines
Tue 15/921:35
MIA
-
STN
2 stops20h 55m
Multiple Airlines
Deal found 7/6£531
Wed 8/709:20
LCY
-
MIA
2 stops19h 15m
Virgin Atlantic
Mon 13/711:30
MIA
-
LCY
2 stops16h 20m
Virgin Atlantic
Deal found 5/6£531
Thu 17/909:30
LHR
-
MIA
2 stops17h 47m
Multiple Airlines
Mon 21/913:10
MIA
-
LHR
1 stop12h 25m
Multiple Airlines
Deal found 8/6£531
Tue 21/710:35
LGW
-
MIA
2 stops16h 24m
Virgin Atlantic
Tue 28/723:00
MIA
-
LGW
1 stop12h 00m
Virgin Atlantic
Deal found 3/6£531
Tue 7/709:15
LCY
-
MIA
1 stop13h 10m
SWISS
Tue 14/719:40
MIA
-
LCY
1 stop11h 55m
SWISS
Deal found 7/6£532
Sat 29/805:40
LTN
-
MIA
2 stops21h 31m
Multiple Airlines
Sat 5/913:10
MIA
-
LTN
2 stops18h 10m
Multiple Airlines
Deal found 6/6£532
Wed 7/1007:00
LHR
-
MIA
2 stops15h 25m
SWISS
Thu 15/1019:40
MIA
-
LHR
1 stop15h 45m
SWISS
Deal found 8/6£532
Fri 11/910:25
LGW
-
MIA
2 stops17h 48m
Virgin Atlantic
Fri 25/915:23
MIA
-
LGW
2 stops19h 37m
Virgin Atlantic
Deal found 4/6£532
Thu 9/710:00
LCY
-
MIA
2 stops19h 55m
Virgin Atlantic
Thu 16/716:55
MIA
-
LCY
1 stop20h 35m
Virgin Atlantic
Deal found 5/6£533

Find flight deals from London to Florida Keys

Keep the following information in mind while searching for London to Florida Keys flight deals. Data was last updated 8 June 2026.

Round-trip from

£530

One-way from

£424

Popular in

December

Cheapest in

September

Average price

£573
British Airways
  • British Airways
  • 3/7-6/7
  • 2 total stops
  • 26h 04m total
  • London to Florida Keys
Search Deals
9/7
  • 9/7
  • 2 total stops
  • 19h 43m total
  • London to Florida Keys
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 Florida Keys 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 8 June 2026.
Use the filters below to find and compare flights from London to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 9/7

10:00-00:55

2 stops19h 55m

Miami

Thu 16/7

16:55-18:30

1 stop20h 35m

£533

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 7/10

10:25-23:09

2 stops17h 44m

Miami

Wed 14/10

11:15-09:25

2 stops17h 10m

£534

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 9/9

10:25-17:50

1 stop12h 25m

Miami

Mon 14/9

15:23-16:00

2 stops19h 37m

£537

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 29/7

06:30-18:58

2 stops17h 28m

Miami

Fri 7/8

08:50-06:20

1 stop16h 30m

£537

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 10/7

14:10-00:21

1 stop15h 11m

Miami

Mon 3/8

17:00-06:55

Nonstop8h 55m

£538

LondonMiami

LCY - MIA

LCYMIA

London City

Fri 10/7

20:15-14:45

1 stop23h 30m

Miami

Mon 13/7

11:30-09:30

2 stops17h 00m

£543

LondonMiami

LCY - MIA

LCYMIA

London City

Tue 21/7

07:45-14:45

1 stop12h 00m

Miami

Tue 28/7

11:30-08:50

2 stops16h 20m

£543

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 2/12

11:15-16:15

Nonstop10h 00m

Miami

Thu 17/12

18:05-08:15

Nonstop9h 10m

£546
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 9/7

12:15-16:55

Nonstop9h 40m

Miami

Thu 16/7

19:30-09:25

Nonstop8h 55m

£547

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 29/6

12:15-16:55

Nonstop9h 40m

Miami

Mon 20/7

22:40-12:35

Nonstop8h 55m

£550

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

Best time to book a flight from London to Florida Keys

Have a flexible travel schedule? Discover the best time to fly to Florida Keys 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 Florida Keys

What is the cheapest month to book a flight from London to Florida Keys?

Currently, September is the cheapest month in which you can book a flight from London to Florida Keys (average of £443). Flying from London to Florida Keys in December is currently the most expensive (average of £662). 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.

How far ahead should I book a flight from London to Florida Keys?

The best time to book flights from London to Florida Keys is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Florida Keys

Get insights into the airlines that provide service to Florida Keys. 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 Florida Keys. Reviews last updated 8 June 2026.
Read reviews from past customers who have flown with Finnair,Virgin Atlantic, andNorse Atlantic UK from London to Florida Keys. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Finnair
7.7
Good
1,404 reviews
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Virgin Atlantic
7.5
Good
689 reviews
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Norse Atlantic UK
7.2
Good
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
American Airlines
7.1
Good
11,645 reviews
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
British Airways
6.7
Okay
8,028 reviews
Finnair
7.7
Good
1,404 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Overall

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space

Related info for your journey

Find useful and relevant information for your journey from London to Florida Keys. 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 Florida Keys?

    There are many flights that can get you from London to Florida Keys in 15h 25m. Fly via SWISS, United Airlines, or Virgin Atlantic to get the fastest option. Airlines will cover a distance of 4414 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London to Florida Keys one-way?

    The cheapest airline one-way is Norse Atlantic UK, with whom users have recently found tickets for as low as £144. However, be on the lookout for offers from TAP AIR PORTUGAL and Aer Lingus, as they are both options that can get you from London to Florida Keys for a low price.

  • What are the most popular routes from London to Florida Keys?

    While some choose either London Gatwick - Miami or London City - Miami, London Heathrow - Miami is the most popular route from London to Florida Keys.

  • Can I find deals for flights from London to Florida Keys that include hotel bookings?

    Yes. In addition to deals on London to Florida Keys flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Florida Keys?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Florida Keys.

  • Can I find deals for business class flights from London to Florida Keys?

    Yes. Cheapflights offers flight deals from London to Florida Keys 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 Florida Keys?

    Currently, September is the cheapest month in which you can book a flight from London to Florida Keys (average of £443). Flying from London to Florida Keys in December is currently the most expensive (average of £662). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Florida Keys

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from London to Florida Keys

Discover the top 3 airlines that operate flights from London to Florida Keys. 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 8 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£484Average£560FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£496Average£752FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£520Average£559FlexibilityNo cancel feeOn-time71%
Search American Airlines 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 Florida Keys?

Cheapflights helps you search for flights from London to Florida Keys via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Florida Keys?

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 Florida Keys.

Can Cheapflights find flights from London to Florida Keys with no change fees?

Yes, we can. To see specific flights from London to Florida Keys with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Florida Keys become cheaper?

Of course! You can now track prices for flights from London to Florida Keys 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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