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Cheap flights from London Heathrow Airport to Florida Keys from £362

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
13 Jan — 20 Jan1
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 14 December 2025.

Wed 31/1207:35LHR - MIA
1 stop18h 10mFinnair
Wed 14/117:10MIA - LHR
Nonstop8h 40mFinnair
Deal found 12/12£478
Wed 31/1210:45LHR - MIA
1 stop15h 00mIberia
Tue 13/116:43MIA - LHR
1 stop11h 37mIberia
Deal found 13/12£481
Wed 31/1210:45LHR - MIA
1 stop15h 00mIberia
Mon 12/122:50MIA - LHR
Nonstop8h 30mIberia
Deal found 13/12£487
Wed 31/1209:15LHR - MIA
1 stop16h 30mIberia
Fri 30/122:00MIA - LHR
Nonstop8h 30mIberia
Deal found 13/12£487
Wed 31/1209:15LHR - MIA
1 stop16h 30mIberia
Fri 9/114:16MIA - LHR
1 stop11h 44mIberia
Deal found 13/12£488
Wed 31/1210:45LHR - MIA
1 stop15h 00mIberia
Wed 14/122:50MIA - LHR
Nonstop8h 30mIberia
Deal found 13/12£490
Wed 31/1209:15LHR - MIA
1 stop16h 30mIberia
Sat 10/121:45MIA - LHR
1 stop30h 35mIberia
Deal found 14/12£493
Wed 31/1206:15LHR - MIA
1 stop19h 30mAmerican Airlines
Mon 12/121:45MIA - LHR
1 stop16h 15mAmerican Airlines
Deal found 13/12£496
Wed 24/1213:35LHR - EYW
2 stops31h 54mUnited Airlines
Mon 29/1215:09EYW - LHR
1 stop13h 01mUnited Airlines
Deal found 12/12£829
Wed 24/1216:20LHR - EYW
1 stop24h 21mUnited Airlines
Sun 28/1216:29EYW - LHR
1 stop34h 01mUnited Airlines
Deal found 12/12£847
Thu 25/1208:00LHR - EYW
1 stop14h 13mUnited Airlines
Mon 29/1213:25EYW - LHR
2 stops16h 40mUnited Airlines
Deal found 12/12£859
Wed 24/1210:00LHR - EYW
2 stops29h 52mDelta
Wed 31/1207:25EYW - LHR
2 stops23h 00mDelta
Deal found 12/12£875

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 14 December 2025.

Round-trip from

£451

One-way from

£362

Popular in

December

Cheapest in

September

Average price

£637
Virgin Atlantic
  • Virgin Atlantic
  • 17/3-25/3
  • 1 total stop
  • 25h 09m total
  • London to Florida Keys
Search Deals
Air Canada
  • Air Canada
  • 19/4
  • 2 total stops
  • 18h 32m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 14 December 2025.
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

Mon 26/1

09:00-17:30

1 stop13h 30m

Miami

Mon 2/2

09:00-06:40

2 stops16h 40m

£464

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 26/1

19:30-18:35

1 stop28h 05m

Miami

Fri 30/1

20:40-16:00

1 stop14h 20m

£472

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 15/2

18:30-14:50

1 stop25h 20m

Miami

Mon 23/2

16:35-22:40

1 stop25h 05m

£472

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 19/1

08:30-22:15

2 stops18h 45m

Miami

Thu 29/1

11:00-06:40

2 stops14h 40m

£472

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 11/2

09:30-22:36

2 stops18h 06m

Miami

Thu 19/2

18:35-10:50

1 stop11h 15m

£473

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 5/5

08:45-17:30

1 stop13h 45m

Miami

Tue 12/5

09:16-06:55

2 stops16h 39m

£476

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 11/1

18:10-16:50

1 stop27h 40m

Miami

Sun 18/1

22:50-12:20

Nonstop8h 30m

£478

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 6/4

10:55-19:41

1 stop13h 46m

Key West

Mon 20/4

18:00-13:30

1 stop14h 30m

£482

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 29/4

08:00-23:10

1 stop20h 10m

Miami

Fri 8/5

16:35-10:20

1 stop12h 45m

£485

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 16/2

06:30-19:35

2 stops18h 05m

Miami

Mon 23/2

11:21-07:50

2 stops15h 29m

£493

Flights are sorted by cheapest return flights first.

Deals found on 12/12

Showing 1-10 of 32 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £440). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £629). 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 14 December 2025.
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
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,430 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Finnair
7.6
Good
1,336 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air France
7.4
Good
1,506 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,575 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 30m. Fly via United Airlines, Scandinavian Airlines, or TAP AIR PORTUGAL 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 Scandinavian Airlines, which is currently one of the cheapest options available, starting at £177. Norse Atlantic UK flights start at £185 while deals on A.P.G. start at £218 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £440). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £629). 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 14 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£452Average£543FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£494Average£792FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£518Average£558FlexibilityNo 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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