Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Florida Keys from £423

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
22 Jul — 29 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 22 June 2026.

Mon 29/608:30
LHR
-
MIA
2 stops18h 41m
Air Canada
Mon 6/721:45
MIA
-
LHR
1 stop27h 50m
Air Canada
Deal found 20/6£504
Mon 7/912:15
LHR
-
MIA
Nonstop9h 45m
Iberia
Wed 16/914:00
MIA
-
LHR
1 stop11h 25m
Iberia
Deal found 20/6£505
Fri 11/912:15
LHR
-
MIA
Nonstop9h 45m
British Airways
Mon 14/917:00
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 20/6£505
Mon 29/612:15
LHR
-
MIA
Nonstop9h 40m
British Airways
Sat 18/719:30
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 21/6£506
Fri 26/612:15
LHR
-
MIA
Nonstop9h 40m
Multiple Airlines
Thu 9/717:00
MIA
-
LHR
Nonstop8h 55m
Multiple Airlines
Deal found 19/6£507
Thu 20/806:30
LHR
-
MIA
1 stop13h 15m
Delta
Fri 28/811:50
MIA
-
LHR
1 stop13h 55m
Delta
Deal found 17/6£508
Tue 18/806:30
LHR
-
MIA
1 stop13h 15m
Delta
Wed 26/811:50
MIA
-
LHR
1 stop13h 55m
Delta
Deal found 17/6£508
Sat 7/1112:05
LHR
-
EYW
2 stops29h 57m
United Airlines
Mon 7/1216:05
EYW
-
LHR
1 stop32h 50m
United Airlines
Deal found 18/6£508
Fri 3/710:05
LHR
-
MIA
1 stop17h 00m
American Airlines
Wed 8/719:30
MIA
-
LHR
Nonstop8h 55m
American Airlines
Deal found 20/6£509
Sun 28/612:15
LHR
-
MIA
Nonstop9h 40m
British Airways
Sun 12/719:10
MIA
-
LHR
1 stop12h 00m
British Airways
Deal found 21/6£510
Sun 28/609:15
LHR
-
MIA
1 stop13h 10m
British Airways
Sun 26/718:25
MIA
-
LHR
1 stop10h 55m
British Airways
Deal found 21/6£511
Thu 25/612:15
LHR
-
MIA
Nonstop9h 40m
Multiple Airlines
Wed 8/722:40
MIA
-
LHR
Nonstop8h 55m
Multiple Airlines
Deal found 18/6£511

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 22 June 2026.

Round-trip from

£504

One-way from

£423

Popular in

December

Cheapest in

September

Average price

£591
Air Canada
  • Air Canada
  • 3/7-15/7
  • 3 total stops
  • 48h 03m total
  • London to Florida Keys
Search Deals
British Airways
  • British Airways
  • 29/10
  • 2 total stops
  • 36h 19m 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 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 22 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

Thu 1/10

15:35-20:15

Nonstop9h 40m

Miami

Sun 4/10

17:05-06:55

Nonstop8h 50m

£506

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/11

12:05-13:02

2 stops29h 57m

Key West

Mon 7/12

16:05-05:55

1 stop32h 50m

£508

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 3/7

12:10-13:30

2 stops30h 20m

Key West

Thu 9/7

16:00-20:40

2 stops23h 40m

£508

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 3/7

12:00-20:21

1 stop13h 21m

Miami

Wed 15/7

19:30-09:25

Nonstop8h 55m

£514

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 5/7

12:15-16:55

Nonstop9h 40m

Miami

Sat 11/7

22:04-06:50

1 stop27h 46m

£519

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 12/12

11:05-11:51

2 stops53h 46m

Key West

Sat 26/12

17:56-09:10

1 stop34h 14m

£519

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 1/9

12:15-17:00

Nonstop9h 45m

Miami

Sat 5/9

18:19-21:40

1 stop22h 21m

£524

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 23/10

15:20-14:18

2 stops27h 58m

Key West

Wed 4/11

16:05-06:20

2 stops33h 15m

£538

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 23/10

08:00-14:18

1 stop35h 18m

Key West

Mon 2/11

16:05-12:00

1 stop14h 55m

£538

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 28/7

11:45-23:37

1 stop16h 52m

Miami

Sun 2/8

11:30-06:45

1 stop14h 15m

£548

Flights are sorted by cheapest return flights first.

Deals found on 21/6

Showing 1-10 of 31 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 £479). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £684). 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 22 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
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
1,530 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
690 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
11,728 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
3,245 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
8,064 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

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 British Airways 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 £253. Aer Lingus flights start at £296 while deals on Lufthansa start at £306 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 £479). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £684). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Florida Keys

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Orlando flights
Heathrow to Miami flights
Gatwick to Orlando flights
Gatwick to Miami flights
Stansted to Orlando flights
Stansted to Miami flights
Heathrow to Tampa flights
London City to Miami flights
London City to Orlando flights
Luton to Miami flights
Gatwick to Fort Lauderdale flights
Luton to Orlando flights
Gatwick to Tampa flights
Heathrow to Fort Lauderdale flights
Stansted to Tampa flights
London City to Tampa flights
Heathrow to West Palm Beach flights
Luton to Tampa flights
Southend to Miami flights
Stansted to Fort Lauderdale flights
Gatwick to West Palm Beach flights
Heathrow to Melbourne flights
Luton to Fort Lauderdale flights
London City to Fort Lauderdale flights
Heathrow to Jacksonville flights
Heathrow to Fort Myers flights
Heathrow to Sarasota flights
London City to West Palm Beach flights
Heathrow to Daytona Beach flights
Heathrow to Pensacola flights
Gatwick to Jacksonville flights
Gatwick to Fort Myers flights
Gatwick to Sarasota flights
Heathrow to Key West flights
Gatwick to Melbourne flights
London City to Jacksonville flights
Stansted to Fort Myers flights
Gatwick to Tallahassee flights
London City to Pensacola flights
Gatwick to Key West flights
London City to Fort Myers flights
Gatwick to Daytona Beach flights
London City to Daytona Beach flights
Gatwick to Pensacola flights
Heathrow to Valparaiso flights
Gatwick to Panama City flights
Heathrow to Panama City flights
Heathrow to Gainesville flights
London City to Melbourne flights

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 22 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£488Average£565FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£500Average£733FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£524Average£563FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.