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Cheap flights from London Heathrow Airport to Florida Keys from £418

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
6 Jul — 13 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Florida Keys

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Florida Keys
Explore the most affordable flight options available from Heathrow to Florida Keys. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 June 2026.

Mon 17/815:20
LHR
-
MIA
2 stops24h 03m
Virgin Atlantic
Sat 5/911:50
MIA
-
LHR
1 stop17h 50m
Virgin Atlantic
Deal found 2/6£528
Thu 2/708:20
LHR
-
MIA
1 stop20h 01m
Virgin Atlantic
Thu 23/719:59
MIA
-
LHR
2 stops29h 46m
Virgin Atlantic
Deal found 2/6£528
Sat 4/712:00
LHR
-
MIA
1 stop13h 21m
British Airways
Fri 31/719:10
MIA
-
LHR
1 stop12h 00m
British Airways
Deal found 3/6£529
Fri 2/1007:30
LHR
-
MIA
2 stops16h 27m
United Airlines
Mon 12/1013:21
MIA
-
LHR
2 stops16h 59m
United Airlines
Deal found 4/6£530
Wed 23/1212:30
LHR
-
MIA
1 stop13h 24m
KLM
Mon 11/115:35
MIA
-
LHR
1 stop11h 30m
KLM
Deal found 5/6£531
Mon 5/1014:05
LHR
-
MIA
2 stops29h 42m
Air Canada
Thu 15/1008:15
MIA
-
LHR
1 stop20h 45m
Air Canada
Deal found 3/6£531
Wed 17/612:15
LHR
-
MIA
Nonstop9h 40m
Finnair
Wed 1/718:21
MIA
-
LHR
1 stop22h 19m
Finnair
Deal found 5/6£532
Wed 8/712:15
LHR
-
MIA
Nonstop9h 40m
Finnair
Sat 18/717:00
MIA
-
LHR
1 stop12h 30m
Finnair
Deal found 4/6£533
Fri 10/716:00
LHR
-
MIA
2 stops24h 35m
Lufthansa
Sat 25/713:10
MIA
-
LHR
2 stops15h 10m
Lufthansa
Deal found 4/6£534
Wed 8/708:40
LHR
-
MIA
1 stop13h 45m
United Airlines
Mon 13/713:10
MIA
-
LHR
1 stop12h 45m
United Airlines
Deal found 4/6£534
Thu 24/908:45
LHR
-
MIA
1 stop13h 40m
United Airlines
Thu 8/1019:40
MIA
-
LHR
1 stop12h 20m
United Airlines
Deal found 2/6£535
Wed 8/712:15
LHR
-
MIA
Nonstop9h 40m
Finnair
Sat 11/718:33
MIA
-
LHR
1 stop30h 52m
Finnair
Deal found 6/6£536

Find flight deals from Heathrow to Florida Keys

Keep the following information in mind while searching for Heathrow to Florida Keys flight deals. Data was last updated 6 June 2026.

Round-trip from

£528

One-way from

£418

Popular in

December

Cheapest in

September

Average price

£522
Virgin Atlantic
  • Virgin Atlantic
  • 17/8-5/9
  • 3 total stops
  • 41h 53m total
  • London to Florida Keys
Search Deals
24/6
  • 24/6
  • 3 total stops
  • 19h 31m total
  • London to Florida Keys
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 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 Heathrow 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 6 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport 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 21/9

07:00-17:30

2 stops15h 30m

Miami

Thu 1/10

19:40-16:25

1 stop15h 45m

£535

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 10/7

07:30-19:25

2 stops16h 55m

Miami

Mon 13/7

13:10-11:55

2 stops17h 45m

£542
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

£545

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 8/9

12:15-17:00

Nonstop9h 45m

Miami

Tue 15/9

19:05-09:00

Nonstop8h 55m

£545

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 8/11

06:30-15:00

1 stop13h 30m

Miami

Sat 28/11

08:05-08:45

1 stop19h 40m

£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

£548

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 22/10

15:35-20:15

Nonstop9h 40m

Miami

Sat 31/10

14:45-05:50

1 stop11h 05m

£548

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 4/7

12:00-20:21

1 stop13h 21m

Miami

Mon 20/7

17:00-06:55

Nonstop8h 55m

£549

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 30/8

15:35-20:10

Nonstop9h 35m

Miami

Thu 3/9

17:00-11:45

1 stop13h 45m

£563

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 7/8

19:50-10:23

1 stop19h 33m

Miami

Tue 25/8

07:02-06:45

1 stop18h 43m

£571

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Florida Keys

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

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £469). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £666). 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 Heathrow Airport to Florida Keys?

The best time to book flights from London Heathrow Airport to Florida Keys is 71 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 6 June 2026.
Read reviews from past customers who have flown with KLM,Virgin Atlantic, andAmerican Airlines from London Heathrow Airport to Florida Keys. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.5
Good
689 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
American Airlines
7.1
Good
11,650 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Iberia
7.0
Good
3,224 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
8,028 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow Airport to Florida Keys?

    There are many flights that can get you from London Heathrow Airport to Florida Keys in 9h 40m. Fly via SWISS, United Airlines, or British Airways to get the fastest option. The distance between London Heathrow Airport and Florida Keys is about 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 Heathrow Airport to Florida Keys one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £250. Aer Lingus flights start at £293 while deals on Lufthansa start at £303 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Florida Keys?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £469). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £666). 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 Heathrow 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 Heathrow to Florida Keys

Discover the top 3 airlines that operate flights from Heathrow 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 6 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£482Average£558FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£494Average£749FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£517Average£557FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Florida Keys?

When you search for this flight from Heathrow to Florida Keys, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Florida Keys for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Florida Keys, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from Heathrow to Florida Keys on Cheapflights with our Price Alert feature and get notified when better prices are available.

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