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Cheap flights from London to Florida Keys from £339

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — EYW
17 Jul — 24 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 17 June 2026.

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£500
Sat 5/910:55
LHR
-
MIA
Nonstop9h 55m
Delta
Tue 15/922:35
MIA
-
LHR
Nonstop9h 00m
Delta
Deal found 16/6£500
Tue 23/612:20
LGW
-
MIA
1 stop31h 43m
British Airways
Thu 2/723:13
MIA
-
LGW
1 stop28h 27m
British Airways
Deal found 17/6£500
Wed 9/909:15
LCY
-
MIA
1 stop13h 10m
SWISS
Wed 16/919:40
MIA
-
LCY
1 stop11h 55m
SWISS
Deal found 17/6£501
Tue 21/719:45
LHR
-
MIA
2 stops28h 08m
Virgin Atlantic
Tue 4/806:00
MIA
-
LHR
1 stop19h 25m
Virgin Atlantic
Deal found 17/6£501
Wed 9/910:00
LGW
-
MIA
1 stop13h 45m
Air Europa
Mon 21/921:30
MIA
-
LGW
1 stop13h 55m
Air Europa
Deal found 17/6£501
Thu 25/612:15
LHR
-
MIA
Nonstop9h 40m
Finnair
Sat 11/719:30
MIA
-
LHR
Nonstop8h 55m
Finnair
Deal found 16/6£502
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£502
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£502
Wed 15/720:05
LHR
-
MIA
1 stop19h 19m
Virgin Atlantic
Thu 23/722:35
MIA
-
LHR
Nonstop9h 00m
Virgin Atlantic
Deal found 17/6£503
Sat 7/1112:05
LHR
-
EYW
2 stops29h 57m
United Airlines
Mon 7/1216:05
EYW
-
LHR
2 stops38h 00m
United Airlines
Deal found 16/6£503
Wed 23/910:25
LGW
-
MIA
1 stop12h 25m
Virgin Atlantic
Sun 4/1006:00
MIA
-
LGW
2 stops22h 25m
Virgin Atlantic
Deal found 16/6£503

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 17 June 2026.

Round-trip from

£500

One-way from

£339

Popular in

December

Cheapest in

September

Average price

£580
9/9-16/9
  • 9/9-16/9
  • 4 total stops
  • 38h 15m total
  • London to Florida Keys
Search Deals
29/10
  • 29/10
  • 1 total stop
  • 24h 39m 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 17 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

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/11

12:05-13:02

2 stops29h 57m

Key West

Mon 7/12

16:05-05:55

1 stop32h 50m

£503

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 14/11

06:35-13:02

2 stops35h 27m

Key West

Wed 18/11

14:30-10:50

2 stops15h 20m

£506

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sat 5/9

10:25-23:37

2 stops18h 12m

Miami

Mon 14/9

15:23-16:00

2 stops19h 37m

£511

LondonMiami

LCY - MIA

LCYMIA

London City

Sat 19/9

08:25-21:13

2 stops17h 48m

Miami

Fri 25/9

11:25-07:55

2 stops15h 30m

£523

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

£523

LondonMiami

LCY - MIA

LCYMIA

London City

Wed 4/11

09:20-23:14

2 stops18h 54m

Miami

Tue 8/12

17:00-08:50

1 stop10h 50m

£524

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

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/11

18:00-13:02

1 stop24h 02m

Key West

Mon 7/12

16:05-05:55

1 stop32h 50m

£528

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

£528

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 23/10

08:00-14:18

1 stop35h 18m

Key West

Mon 2/11

16:05-12:00

1 stop14h 55m

£531

Flights are sorted by cheapest return flights first.

Deals found on 13/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 £445). Flying from London to Florida Keys in December is currently the most expensive (average of £661). 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 17 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
7.6
Good
1,412 reviews
Check prices

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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
11,674 reviews
Finnair
7.6
Good
1,412 reviews
Check prices

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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

Entertainment

6.9

Comfort

7.4

Overall

7.6

Food

6.7

Boarding

7.7

Crew

8.2

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 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 17h 48m. Fly via United Airlines, Virgin Atlantic, or Delta to get the fastest option. Airlines will cover a distance of 4435 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 £178. 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 £445). Flying from London to Florida Keys in December is currently the most expensive (average of £661). 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 17 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£482Average£557FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£493Average£723FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£517Average£556FlexibilityNo 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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