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Cheap flights from London Heathrow Airport to Florida Keys from £325

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
10 Mar — 17 Mar1
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 8 February 2026.

Tue 3/314:30
LHR
-
MIA
Nonstop10h 00m
British Airways
Tue 24/323:00
MIA
-
LHR
Nonstop8h 30m
British Airways
Deal found 7/2£375
Tue 10/212:05
LHR
-
MIA
1 stop34h 25m
SWISS
Tue 24/219:50
MIA
-
LHR
1 stop12h 10m
SWISS
Deal found 4/2£377
Mon 6/409:15
LHR
-
MIA
1 stop16h 10m
Iberia
Mon 20/422:10
MIA
-
LHR
1 stop15h 05m
Iberia
Deal found 5/2£383
Thu 7/515:35
LHR
-
MIA
Nonstop9h 35m
British Airways
Thu 14/522:40
MIA
-
LHR
Nonstop8h 55m
British Airways
Deal found 5/2£386
Fri 27/220:35
LHR
-
MIA
2 stops29h 57m
Multiple Airlines
Wed 4/313:21
MIA
-
LHR
2 stops16h 29m
Multiple Airlines
Deal found 5/2£388
Thu 5/1112:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Sun 22/1117:15
MIA
-
LHR
1 stop21h 15m
Icelandair
Deal found 7/2£391
Mon 23/212:00
LHR
-
MIA
1 stop15h 19m
United Airlines
Mon 2/314:15
MIA
-
LHR
1 stop16h 00m
United Airlines
Deal found 6/2£393
Sun 25/1018:40
LHR
-
MIA
1 stop28h 25m
Scandinavian Airlines
Mon 16/1119:55
MIA
-
LHR
1 stop32h 25m
Scandinavian Airlines
Deal found 5/2£394
Thu 16/413:05
LHR
-
MIA
1 stop13h 50m
Icelandair
Fri 24/418:15
MIA
-
LHR
1 stop21h 05m
Icelandair
Deal found 7/2£394
Thu 12/312:15
LHR
-
MIA
1 stop13h 40m
Icelandair
Wed 15/418:15
MIA
-
LHR
1 stop12h 40m
Icelandair
Deal found 7/2£397
Tue 10/312:50
LHR
-
EYW
1 stop28h 33m
Lufthansa
Sun 22/316:05
EYW
-
LHR
1 stop33h 50m
Lufthansa
Deal found 7/2£491
Mon 23/312:05
LHR
-
EYW
2 stops29h 18m
United Airlines
Mon 30/318:22
EYW
-
LHR
2 stops21h 18m
United Airlines
Deal found 6/2£519

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 8 February 2026.

Round-trip from

£375

One-way from

£325

Popular in

December

Cheapest in

September

Average price

£455
British Airways
  • British Airways
  • 3/3-24/3
  • Nonstop
  • 18h 30m total
  • London to Florida Keys
Search Deals
British Airways
  • British Airways
  • 28/4
  • 2 total stops
  • 21h 43m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£14 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 February 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 8 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Florida Keys that are best for you.

Fly from

Heathrow

Fly to

Florida Keys

Route

Depart

Return

Price

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 11/3

11:15-17:15

Nonstop10h 00m

Miami

Wed 25/3

23:00-11:30

Nonstop8h 30m

£438

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 10/3

06:00-15:50

1 stop13h 50m

Miami

Fri 20/3

00:35-18:55

1 stop14h 20m

£451

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 1/5

12:00-21:55

1 stop14h 55m

Miami

Wed 6/5

16:30-15:35

1 stop18h 05m

£463

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 14/4

13:45-14:30

1 stop29h 45m

Miami

Tue 28/4

16:30-22:00

1 stop24h 30m

£463

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 10/3

09:00-18:30

1 stop13h 30m

Miami

Tue 17/3

09:00-06:40

2 stops17h 40m

£464

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 15/4

08:40-17:25

1 stop13h 45m

Miami

Thu 23/4

09:15-06:55

2 stops16h 40m

£474

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 13/4

08:40-17:30

1 stop13h 50m

Miami

Thu 23/4

08:55-05:55

2 stops16h 00m

£474

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 1/3

16:15-16:50

1 stop29h 35m

Miami

Mon 9/3

19:35-20:40

1 stop21h 05m

£477

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 8/4

06:30-16:40

1 stop15h 10m

Miami

Mon 13/4

09:55-06:25

1 stop15h 30m

£479

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 9/3

11:25-21:45

1 stop14h 20m

Miami

Mon 23/3

23:00-11:30

Nonstop8h 30m

£480

Flights are sorted by cheapest return flights first.

Deals found on 5/2

Showing 1-10 of 38 results
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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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £445). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £615). 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 8 February 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
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,450 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Finnair
7.6
Good
1,357 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,531 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,720 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 10h. Fly via British Airways, 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 Norse Atlantic UK, which is currently one of the cheapest options available, starting at £173. A.P.G. flights start at £214 while deals on TAP AIR PORTUGAL start at £248 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 £445). Flying from London Heathrow Airport to Florida Keys in June is currently the most expensive (average of £615). 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 8 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£444Average£534FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£485Average£777FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£509Average£548FlexibilityNo 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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