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Cheap flights from London Heathrow Airport to Florida Keys from £329

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
23 May — 30 May1
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 23 April 2026.

Thu 19/1106:00
LHR
-
MIA
1 stop13h 50m
TAP AIR PORTUGAL
Sat 28/1116:50
MIA
-
LHR
1 stop13h 35m
TAP AIR PORTUGAL
Deal found 20/4£500
Wed 27/509:55
LHR
-
MIA
1 stop15h 05m
LEVEL
Mon 27/721:45
MIA
-
LHR
1 stop30h 25m
LEVEL
Deal found 21/4£503
Tue 21/718:05
LHR
-
MIA
1 stop35h 16m
Finnair
Tue 4/819:35
MIA
-
LHR
Nonstop8h 50m
Finnair
Deal found 21/4£503
Mon 18/512:15
LHR
-
MIA
Nonstop9h 45m
Finnair
Mon 25/519:40
MIA
-
LHR
Nonstop8h 45m
Finnair
Deal found 18/4£505
Mon 8/609:55
LHR
-
MIA
Nonstop9h 35m
American Airlines
Mon 22/613:49
MIA
-
LHR
1 stop15h 26m
American Airlines
Deal found 20/4£505
Tue 5/515:00
LHR
-
MIA
Nonstop10h 10m
British Airways
Tue 12/514:24
MIA
-
LHR
1 stop11h 01m
British Airways
Deal found 19/4£506
Wed 27/515:35
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 4/617:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 18/4£507
Tue 8/910:30
LHR
-
MIA
1 stop34h 30m
ITA Airways
Tue 22/919:45
MIA
-
LHR
1 stop14h 55m
ITA Airways
Deal found 20/4£508
Mon 11/512:15
LHR
-
MIA
Nonstop9h 45m
Finnair
Wed 27/519:40
MIA
-
LHR
Nonstop8h 45m
Finnair
Deal found 20/4£509
Tue 5/511:30
LHR
-
MIA
1 stop13h 55m
Iberia
Tue 12/521:15
MIA
-
LHR
Nonstop8h 50m
Iberia
Deal found 20/4£510
Wed 28/1010:45
LHR
-
EYW
1 stop12h 58m
Virgin Atlantic
Mon 2/1118:00
EYW
-
LHR
1 stop31h 25m
Virgin Atlantic
Deal found 21/4£594
Wed 28/1010:45
LHR
-
EYW
1 stop12h 58m
Air France
Mon 2/1118:00
EYW
-
LHR
2 stops31h 50m
Air France
Deal found 21/4£609

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 23 April 2026.

Round-trip from

£500

One-way from

£329

Popular in

December

Cheapest in

September

Average price

£526
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 5/5-25/1
  • 2 total stops
  • 28h 25m total
  • London to Florida Keys
Search Deals
20/5
  • 20/5
  • 1 total stop
  • 34h 50m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 23 April 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

Thu 4/6

20:50-20:00

1 stop28h 10m

Miami

Mon 8/6

21:45-09:10

1 stop30h 25m

£520

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 1/6

10:15-17:52

1 stop12h 37m

Miami

Mon 8/6

18:21-10:35

1 stop11h 14m

£547

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 21/5

06:30-14:45

1 stop13h 15m

Miami

Thu 28/5

15:35-08:50

1 stop12h 15m

£557

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 17/5

10:55-15:50

Nonstop9h 55m

Miami

Tue 16/6

11:30-10:40

1 stop18h 10m

£564

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 4/5

11:30-20:45

1 stop14h 15m

Miami

Mon 18/5

19:30-12:05

1 stop11h 35m

£567

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 30/5

06:30-14:45

1 stop13h 15m

Miami

Sat 13/6

22:35-12:35

Nonstop9h 00m

£569

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 27/7

06:15-19:27

2 stops18h 12m

Miami

Sun 16/8

21:50-21:40

1 stop18h 50m

£571

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 5/9

06:30-14:45

1 stop13h 15m

Miami

Sun 13/9

18:05-08:05

Nonstop9h 00m

£573

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 8/6

16:35-00:21

1 stop12h 46m

Miami

Thu 25/6

13:50-06:25

1 stop11h 35m

£574

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 3/7

10:55-15:50

Nonstop9h 55m

Miami

Sat 18/7

13:38-07:10

1 stop12h 32m

£581

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 39 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £443). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £631). 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.

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 23 April 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
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,508 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
687 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
American Airlines
7.1
Good
11,662 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Iberia
7.0
Good
3,193 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,909 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 12h 37m. Fly via LEVEL, British Airways, or Virgin Atlantic 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 £248. Aer Lingus flights start at £290 while deals on Lufthansa start at £302 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £443). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £631). 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 23 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£462Average£538FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£490Average£743FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£513Average£552FlexibilityNo 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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