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Cheap flights from London Heathrow Airport to Florida Keys from £373

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
15 Aug — 22 Aug1
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 16 July 2026.

Wed 14/1013:45
LHR
-
MIA
1 stop14h 40m
TAP AIR PORTUGAL
Fri 30/1000:50
MIA
-
LHR
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 14/7£462
Fri 4/908:00
LHR
-
MIA
1 stop18h 55m
TAP AIR PORTUGAL
Sat 19/916:20
MIA
-
LHR
1 stop13h 00m
TAP AIR PORTUGAL
Deal found 14/7£462
Fri 4/906:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 13/916:20
MIA
-
LHR
1 stop25h 35m
TAP AIR PORTUGAL
Deal found 15/7£463
Thu 12/1118:30
LHR
-
MIA
1 stop25h 20m
TAP AIR PORTUGAL
Thu 10/1216:50
MIA
-
LHR
1 stop19h 40m
TAP AIR PORTUGAL
Deal found 16/7£464
Mon 7/919:50
LHR
-
MIA
1 stop23h 45m
TAP AIR PORTUGAL
Mon 5/1016:20
MIA
-
LHR
1 stop13h 00m
TAP AIR PORTUGAL
Deal found 14/7£465
Wed 26/811:20
LHR
-
MIA
1 stop17h 05m
TAP AIR PORTUGAL
Mon 7/916:20
MIA
-
LHR
1 stop15h 25m
TAP AIR PORTUGAL
Deal found 14/7£465
Wed 2/909:55
LHR
-
MIA
1 stop15h 05m
LEVEL
Wed 30/922:00
MIA
-
LHR
1 stop30h 10m
LEVEL
Deal found 14/7£466
Sat 5/906:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Sun 13/916:20
MIA
-
LHR
1 stop13h 00m
TAP AIR PORTUGAL
Deal found 11/7£467
Thu 27/806:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Wed 23/916:20
MIA
-
LHR
1 stop24h 40m
TAP AIR PORTUGAL
Deal found 13/7£467
Thu 15/1006:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Thu 22/1016:20
MIA
-
LHR
1 stop13h 40m
TAP AIR PORTUGAL
Deal found 15/7£468
Tue 22/913:45
LHR
-
MIA
1 stop29h 50m
TAP AIR PORTUGAL
Fri 2/1016:20
MIA
-
LHR
1 stop25h 35m
TAP AIR PORTUGAL
Deal found 12/7£469
Sun 6/916:50
LHR
-
MIA
2 stops27h 15m
Aer Lingus
Mon 21/916:55
MIA
-
LHR
2 stops18h 05m
Aer Lingus
Deal found 14/7£470

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 16 July 2026.

Round-trip from

£462

One-way from

£373

Popular in

December

Cheapest in

September

Average price

£597
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 14/10-30/10
  • 2 total stops
  • 28h 45m total
  • London to Florida Keys
Search Deals
United Airlines
  • United Airlines
  • 1/9
  • 2 total stops
  • 34h 59m total
  • London to Florida Keys
Search Deals
High demand for flights, 2% 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 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 16 July 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

Sat 10/10

18:45-14:35

1 stop24h 50m

Miami

Sun 18/10

16:20-22:55

1 stop25h 35m

£487

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 4/9

08:40-17:25

1 stop13h 45m

Miami

Tue 29/9

19:40-13:00

1 stop12h 20m

£512

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/11

09:00-17:30

1 stop13h 30m

Miami

Mon 9/11

19:50-13:00

1 stop12h 10m

£512

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 30/9

08:40-17:25

1 stop13h 45m

Miami

Fri 23/10

13:25-11:20

2 stops16h 55m

£514

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 26/10

09:00-18:30

1 stop13h 30m

Miami

Fri 30/10

08:58-05:55

2 stops16h 57m

£514

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 22/9

11:30-20:05

1 stop13h 35m

Miami

Tue 29/9

22:40-12:35

Nonstop8h 55m

£522

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 8/12

06:30-14:55

1 stop13h 25m

Miami

Tue 5/1

12:01-08:45

1 stop15h 44m

£530

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 17/12

06:35-16:55

1 stop15h 20m

Miami

Fri 15/1

14:30-09:10

1 stop13h 40m

£536

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 13/9

10:55-15:50

Nonstop9h 55m

Miami

Sun 27/9

07:06-10:20

1 stop22h 14m

£538
Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 11/9

10:55-15:50

Nonstop9h 55m

Miami

Mon 21/9

18:05-08:05

Nonstop9h 00m

£541

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 33 resultsSorted by cheapest first
1
2
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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £473). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £671). 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 73 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 16 July 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
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
KLM
7.8
Good
1,539 reviews
KLM
7.8
Good
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Virgin Atlantic
7.5
Good
693 reviews
KLM
7.8
Good
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
American Airlines
7.1
Good
11,816 reviews
KLM
7.8
Good
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Iberia
7.0
Good
3,254 reviews
KLM
7.8
Good
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
British Airways
6.7
Okay
8,121 reviews
KLM
7.8
Good
1,539 reviews
Check prices

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

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 45m. Fly via TAP AIR PORTUGAL or United Airlines 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 £249. Aer Lingus flights start at £291 while deals on Lufthansa start at £301 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 £473). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £671). 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

Browse thousands of different options on Cheapflights for your next trip

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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 16 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£470Average£556FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£470Average£721FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£554Average£554FlexibilityNo 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 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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