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Cheap flights from London to Florida Keys from £359

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — EYW
25 Aug — 1 Sep1
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 26 July 2026.

Tue 13/1018:45
STN
-
MIA
2 stops33h 40m
Multiple Airlines
Tue 20/1016:20
MIA
-
STN
2 stops23h 35m
Multiple Airlines
Deal found 25/7£463
Mon 7/919:50
LHR
-
MIA
1 stop23h 45m
TAP AIR PORTUGAL
Sun 13/900:30
MIA
-
LHR
1 stop13h 20m
TAP AIR PORTUGAL
Deal found 24/7£463
Mon 7/915:00
LHR
-
MIA
2 stops28h 35m
Multiple Airlines
Mon 14/916:20
MIA
-
LHR
2 stops16h 55m
Multiple Airlines
Deal found 24/7£464
Tue 25/809:10
STN
-
MIA
2 stops34h 25m
Multiple Airlines
Sun 6/900:30
MIA
-
STN
2 stops27h 15m
Multiple Airlines
Deal found 26/7£464
Sat 5/912:45
LTN
-
MIA
2 stops30h 50m
Multiple Airlines
Sun 13/916:20
MIA
-
LTN
2 stops20h 55m
Multiple Airlines
Deal found 25/7£464
Wed 2/908:20
STN
-
MIA
2 stops35h 15m
Multiple Airlines
Fri 18/900:20
MIA
-
STN
2 stops25h 50m
Multiple Airlines
Deal found 24/7£465
Tue 20/1020:35
LTN
-
MIA
2 stops27h 10m
Multiple Airlines
Wed 4/1121:45
MIA
-
LTN
2 stops19h 10m
Multiple Airlines
Deal found 25/7£465
Thu 15/1006:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 25/1000:50
MIA
-
LHR
1 stop17h 50m
TAP AIR PORTUGAL
Deal found 24/7£465
Wed 16/917:05
LGW
-
MIA
2 stops26h 30m
Multiple Airlines
Wed 23/916:20
MIA
-
LGW
2 stops25h 45m
Multiple Airlines
Deal found 25/7£465
Wed 14/1011:20
LHR
-
MIA
1 stop17h 05m
TAP AIR PORTUGAL
Sun 25/1017:50
MIA
-
LHR
1 stop14h 50m
TAP AIR PORTUGAL
Deal found 24/7£466
Thu 27/808:00
LGW
-
MIA
2 stops35h 35m
Multiple Airlines
Wed 9/903:50
MIA
-
LGW
2 stops35h 25m
Multiple Airlines
Deal found 24/7£466
Thu 3/920:45
STN
-
MIA
2 stops30h 10m
Multiple Airlines
Wed 9/903:50
MIA
-
STN
2 stops23h 20m
Multiple Airlines
Deal found 26/7£467

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 26 July 2026.

Round-trip from

£463

One-way from

£359

Popular in

December

Cheapest in

September

Average price

£618
13/10-20/10
  • 13/10-20/10
  • 4 total stops
  • 57h 15m total
  • London to Florida Keys
Search Deals
British Airways
  • British Airways
  • 15/9
  • 2 total stops
  • 27h 37m total
  • London to Florida Keys
Search Deals
High demand for flights, 3% 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 July 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 26 July 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

LHR - MIA

LHRMIA

London Heathrow

Mon 24/8

08:40-17:30

1 stop13h 50m

Miami

Mon 14/9

19:40-17:50

1 stop17h 10m

£492

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 24/8

20:55-14:45

1 stop22h 50m

Miami

Mon 14/9

07:06-06:45

2 stops18h 39m

£501

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Mon 31/8

21:15-14:35

2 stops22h 20m

Miami

Mon 21/9

16:20-15:35

1 stop18h 15m

£504

LondonMiami

SEN - MIA

SENMIA

London Southend

Tue 13/10

20:25-19:45

3 stops28h 20m

Miami

Tue 20/10

21:35-23:20

2 stops20h 45m

£512

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 31/8

08:40-17:30

1 stop13h 50m

Miami

Mon 21/9

12:17-09:20

2 stops16h 03m

£515

LondonKey West

LGW - EYW

LGWEYW

London Gatwick

Wed 16/9

14:00-10:19

1 stop25h 19m

Key West

Fri 2/10

10:59-10:00

1 stop18h 01m

£516

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 20/8

12:10-17:25

1 stop34h 15m

Miami

Wed 2/9

19:59-20:40

1 stop19h 41m

£517

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 31/8

08:40-17:30

1 stop13h 50m

Miami

Sun 13/9

13:44-09:20

2 stops14h 36m

£518

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 9/1

18:40-14:45

1 stop25h 05m

Miami

Sat 30/1

16:40-11:15

1 stop13h 35m

£522
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 13/1

09:00-17:30

1 stop13h 30m

Miami

Sun 17/1

19:50-13:00

1 stop12h 10m

£522

Flights are sorted by cheapest return flights first.

Deals found on 24/7

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 £482). Flying from London to Florida Keys in December is currently the most expensive (average of £632). 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 35 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 26 July 2026.
Read reviews from past customers who have flown with Finnair,Virgin Atlantic, andAmerican Airlines 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
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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
1,423 reviews
Finnair
7.6
Good
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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
695 reviews
Finnair
7.6
Good
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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
11,845 reviews
Finnair
7.6
Good
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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.
Iberia
7.0
Good
3,257 reviews
Finnair
7.6
Good
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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
8,132 reviews
Finnair
7.6
Good
1,423 reviews
Check prices

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.2

Boarding

7.7

Comfort

7.4

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 13h 50m. Fly via SWISS, Virgin Atlantic, or TAP AIR PORTUGAL 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 £179. 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 £482). Flying from London to Florida Keys in December is currently the most expensive (average of £632). 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 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 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£474Average£561FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£474Average£753FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£560Average£560FlexibilityNo 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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