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Cheap flights from London Heathrow Airport to Florida Keys from £310

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 14/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
31 Mar — 7 Apr1
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 1 March 2026.

Tue 14/415:35
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 23/422:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 26/2£381
Sat 5/909:55
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 24/917:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£382
Thu 10/909:55
LHR
-
MIA
Nonstop9h 35m
British Airways
Mon 21/917:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£383
Tue 17/312:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Wed 25/318:15
MIA
-
LHR
1 stop12h 35m
Icelandair
Deal found 28/2£384
Sat 5/909:55
LHR
-
MIA
Nonstop9h 35m
British Airways
Tue 22/922:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£385
Thu 12/313:45
LHR
-
MIA
1 stop32h 45m
United Airlines
Sat 14/318:02
MIA
-
LHR
1 stop37h 58m
United Airlines
Deal found 28/2£386
Sat 2/506:00
LHR
-
MIA
1 stop13h 30m
TAP AIR PORTUGAL
Sun 10/516:30
MIA
-
LHR
1 stop12h 50m
TAP AIR PORTUGAL
Deal found 26/2£388
Fri 4/909:55
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 24/917:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£391
Fri 4/909:55
LHR
-
MIA
Nonstop9h 35m
British Airways
Wed 23/922:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£393
Mon 13/415:40
LHR
-
MIA
Nonstop9h 35m
British Airways
Fri 24/422:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/3£394
Mon 13/406:25
LHR
-
EYW
2 stops21h 33m
British Airways
Wed 13/515:58
EYW
-
LHR
1 stop15h 37m
British Airways
Deal found 1/3£468
Mon 13/406:25
LHR
-
EYW
2 stops21h 33m
British Airways
Mon 20/415:58
EYW
-
LHR
1 stop12h 02m
British Airways
Deal found 27/2£471

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 1 March 2026.

Round-trip from

£381

One-way from

£310

Popular in

December

Cheapest in

September

Average price

£494
British Airways
  • British Airways
  • 14/4-23/4
  • Nonstop
  • 18h 30m total
  • London to Florida Keys
Search Deals
14/3
  • 14/3
  • 2 total stops
  • 35h 20m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 1 March 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

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 13/4

06:25-22:58

2 stops21h 33m

Key West

Mon 20/4

11:24-09:00

1 stop16h 36m

£489

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 11/3

06:50-22:19

2 stops19h 29m

Key West

Wed 25/3

16:55-07:30

1 stop34h 35m

£490

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 15/4

11:30-20:25

1 stop13h 55m

Miami

Wed 29/4

19:05-09:00

Nonstop8h 55m

£494

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 20/5

08:55-17:50

1 stop13h 55m

Miami

Thu 28/5

18:05-08:05

Nonstop9h 00m

£495

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 14/4

15:35-20:10

Nonstop9h 35m

Miami

Tue 21/4

22:40-12:35

Nonstop8h 55m

£505

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 16/4

08:45-17:25

1 stop13h 40m

Miami

Tue 21/4

13:20-10:25

2 stops16h 05m

£506

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 19/3

09:00-18:30

1 stop13h 30m

Miami

Tue 31/3

12:20-05:55

1 stop12h 35m

£511

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 19/3

06:00-15:40

1 stop13h 40m

Miami

Mon 30/3

14:20-07:15

1 stop11h 55m

£511

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 13/4

15:40-20:15

Nonstop9h 35m

Miami

Mon 27/4

18:57-11:45

1 stop11h 48m

£514

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 13/4

16:40-13:31

2 stops25h 51m

Key West

Mon 20/4

18:22-16:40

2 stops17h 18m

£514

Flights are sorted by cheapest return flights first.

Deals found on 27/2

Showing 1-10 of 32 resultsSorted by cheapest first
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3
4

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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £449). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £621). 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 1 March 2026.
Read reviews from past customers who have flown with KLM, Finnair, andVirgin Atlantic 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
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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
7.7
Good
1,461 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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
Finnair
7.6
Good
1,371 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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
680 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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
Air France
7.4
Good
1,541 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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
7,774 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

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 13h 55m. Fly via British Airways, United Airlines, or Delta 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 Norse Atlantic UK, which is currently one of the cheapest options available, starting at £174. TAP AIR PORTUGAL flights start at £250 while deals on Aer Lingus start at £291 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £449). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £621). 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 1 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£448Average£539FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£489Average£760FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£514Average£553FlexibilityNo 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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