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Cheap flights from London Heathrow Airport to Florida Keys from £331

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
22 Apr — 29 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 23 March 2026.

Wed 29/409:55
LHR
-
MIA
1 stop15h 05m
Multiple Airlines
Sun 3/521:45
MIA
-
LHR
1 stop30h 25m
Multiple Airlines
Deal found 18/3£416
Wed 22/409:55
LHR
-
MIA
1 stop15h 05m
Multiple Airlines
Mon 27/421:45
MIA
-
LHR
1 stop17h 20m
Multiple Airlines
Deal found 21/3£418
Mon 4/515:15
LHR
-
MIA
1 stop14h 39m
Delta
Tue 2/611:37
MIA
-
LHR
1 stop16h 13m
Delta
Deal found 21/3£420
Fri 8/509:20
LHR
-
MIA
1 stop17h 07m
Delta
Wed 27/512:40
MIA
-
LHR
1 stop13h 30m
Delta
Deal found 21/3£421
Mon 13/421:25
LHR
-
MIA
1 stop29h 30m
Icelandair
Wed 22/418:15
MIA
-
LHR
1 stop21h 05m
Icelandair
Deal found 19/3£424
Wed 15/421:25
LHR
-
MIA
1 stop29h 30m
Icelandair
Wed 22/418:15
MIA
-
LHR
1 stop21h 05m
Icelandair
Deal found 18/3£424
Thu 16/413:05
LHR
-
MIA
1 stop13h 50m
Icelandair
Wed 29/418:15
MIA
-
LHR
1 stop21h 05m
Icelandair
Deal found 18/3£427
Tue 5/506:00
LHR
-
MIA
1 stop13h 30m
TAP AIR PORTUGAL
Tue 26/503:50
MIA
-
LHR
1 stop13h 10m
TAP AIR PORTUGAL
Deal found 21/3£428
Tue 15/906:15
LHR
-
EYW
2 stops17h 12m
British Airways
Tue 22/913:59
EYW
-
LHR
1 stop14h 01m
British Airways
Deal found 21/3£518
Wed 6/509:55
LHR
-
EYW
1 stop18h 03m
British Airways
Wed 13/511:24
EYW
-
LHR
1 stop18h 41m
British Airways
Deal found 22/3£566
Thu 3/1218:45
LHR
-
EYW
2 stops29h 49m
British Airways
Mon 7/1216:10
EYW
-
LHR
1 stop14h 55m
British Airways
Deal found 19/3£576
Wed 6/506:15
LHR
-
EYW
2 stops18h 25m
Virgin Atlantic
Wed 13/518:19
EYW
-
LHR
2 stops37h 16m
Virgin Atlantic
Deal found 22/3£579

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 March 2026.

Round-trip from

£416

One-way from

£331

Popular in

December

Cheapest in

September

Average price

£534
29/4-3/5
  • 29/4-3/5
  • 2 total stops
  • 45h 30m total
  • London to Florida Keys
Search Deals
Avianca
  • Avianca
  • 9/4
  • 1 total stop
  • 30h 25m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£12 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 23 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

Cheapest return flight

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 7/5

20:50-20:00

1 stop28h 10m

Miami

Wed 5/8

21:45-09:10

1 stop30h 25m

£470

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 16/4

20:50-20:00

1 stop28h 10m

Miami

Sun 19/4

21:45-09:10

1 stop30h 25m

£501

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 6/5

09:55-20:00

1 stop15h 05m

Miami

Mon 11/5

21:45-20:05

1 stop17h 20m

£502

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 6/5

09:55-20:00

1 stop15h 05m

Miami

Wed 13/5

21:45-20:05

1 stop17h 20m

£517

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 21/7

11:30-20:45

1 stop14h 15m

Miami

Tue 28/7

22:35-12:35

Nonstop9h 00m

£546

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 21/7

08:55-20:45

1 stop16h 50m

Miami

Tue 25/8

11:35-06:45

1 stop14h 10m

£546

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 5/5

06:30-14:45

1 stop13h 15m

Miami

Sun 13/9

18:05-08:05

Nonstop9h 00m

£548

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 7/5

06:30-14:45

1 stop13h 15m

Miami

Wed 5/8

22:35-12:35

Nonstop9h 00m

£554
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 20/5

10:55-15:50

Nonstop9h 55m

Miami

Thu 28/5

22:35-12:35

Nonstop9h 00m

£555

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 9/5

10:55-15:50

Nonstop9h 55m

Miami

Sun 17/5

18:05-08:05

Nonstop9h 00m

£560

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 41 resultsSorted by cheapest first
1
2
3
...
5

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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £466). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £628). 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 March 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
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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
1,477 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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
682 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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
11,485 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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
3,147 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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
7,809 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

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 18h 25m. Fly via LEVEL, British Airways, or Delta to get the fastest option. The distance between London Heathrow Airport and Florida Keys is about 4539 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 £185. TAP AIR PORTUGAL flights start at £253 while deals on Aer Lingus start at £294 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £466). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £628). 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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Southend to Orlando flights
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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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£465Average£545FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£495Average£767FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£520Average£559FlexibilityNo 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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