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Cheap flights from London Heathrow Airport to Florida Keys from £285

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 4 November 2025.

Wed 3/1221:05LHR - MIA
1 stop26h 00mScandinavian Airlines
Wed 10/1219:55MIA - LHR
1 stop16h 05mScandinavian Airlines
Deal found 3/11£400
Tue 2/1212:15LHR - MIA
1 stop13h 40mIcelandair
Wed 10/1217:15MIA - LHR
1 stop12h 35mIcelandair
Deal found 3/11£401
Thu 4/1219:55LHR - MIA
1 stop23h 55mTAP AIR PORTUGAL
Sun 14/1223:50MIA - LHR
1 stop12h 40mTAP AIR PORTUGAL
Deal found 2/11£404
Fri 14/1120:35LHR - MIA
1 stop29h 20mIcelandair
Wed 4/217:15MIA - LHR
1 stop21h 15mIcelandair
Deal found 2/11£405
Sun 7/1206:00LHR - MIA
1 stop21h 05mTAP AIR PORTUGAL
Sun 14/1223:50MIA - LHR
1 stop17h 50mTAP AIR PORTUGAL
Deal found 3/11£406
Sat 22/1117:00LHR - MIA
1 stop30h 05mScandinavian Airlines
Sun 18/120:40MIA - LHR
2 stops14h 45mScandinavian Airlines
Deal found 3/11£406
Mon 8/1206:40LHR - MIA
1 stop16h 25mScandinavian Airlines
Wed 24/1219:55MIA - LHR
1 stop20h 25mScandinavian Airlines
Deal found 3/11£407
Mon 1/1221:05LHR - MIA
2 stops26h 00mScandinavian Airlines
Mon 8/1219:55MIA - LHR
1 stop17h 35mScandinavian Airlines
Deal found 2/11£408
Sat 22/1117:00LHR - MIA
1 stop30h 05mScandinavian Airlines
Wed 3/1219:55MIA - LHR
2 stops17h 35mScandinavian Airlines
Deal found 3/11£410
Wed 3/1211:15LHR - EYW
1 stop16h 52mBritish Airways
Wed 10/1212:00EYW - LHR
1 stop13h 50mBritish Airways
Deal found 3/11£475
Thu 18/1208:55LHR - EYW
1 stop16h 11mVirgin Atlantic
Thu 25/1211:47EYW - LHR
1 stop16h 13mVirgin Atlantic
Deal found 3/11£492
Wed 3/1210:45LHR - EYW
1 stop14h 21mVirgin Atlantic
Wed 10/1215:02EYW - LHR
2 stops14h 48mVirgin Atlantic
Deal found 3/11£499

Cheap 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 4 November 2025.

Round-trip from

£400

One-way from

£285

Popular in

December

Cheapest in

September

Average price

£455
Scandinavian Airlines
  • Scandinavian Airlines
  • 3/12-10/12
  • 2 total stops
  • 42h 05m total
  • London to Florida Keys
Search Deals
4/2
  • 4/2
  • 1 total stop
  • 32h 40m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 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 November 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 4 November 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

Thu 12/3

19:50-19:35

2 stops27h 45m

Miami

Sat 21/3

20:55-18:50

2 stops17h 55m

£410

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 22/11

13:55-18:05

2 stops33h 10m

Miami

Sat 24/1

20:40-18:50

2 stops17h 10m

£433

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 14/4

13:05-21:55

1 stop13h 50m

Miami

Wed 22/4

18:15-20:20

1 stop21h 05m

£441

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 6/12

12:15-20:55

1 stop13h 40m

Miami

Wed 10/12

17:15-10:50

1 stop12h 35m

£444

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 18/4

13:05-21:55

1 stop13h 50m

Miami

Wed 22/4

18:15-20:20

1 stop21h 05m

£455

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 17/4

21:25-21:55

1 stop29h 30m

Miami

Wed 22/4

18:15-20:20

1 stop21h 05m

£457

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 13/4

21:25-21:55

1 stop29h 30m

Miami

Fri 24/4

18:15-11:55

1 stop12h 40m

£457

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 1/12

09:00-17:30

1 stop13h 30m

Miami

Mon 8/12

12:50-06:40

1 stop12h 50m

£460

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/2

09:00-17:30

1 stop13h 30m

Miami

Mon 23/2

12:22-09:10

2 stops15h 48m

£466

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 9/1

19:50-18:05

2 stops27h 15m

Miami

Tue 13/1

20:40-18:50

2 stops17h 10m

£470

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 35 results
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2
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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 £445). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £653). 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 4 November 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
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,405 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Finnair
7.6
Good
1,335 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
671 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
TAP AIR PORTUGAL
7.1
Good
2,046 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,494 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 50m. Fly via Scandinavian Airlines, Icelandair, or British Airways 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 United Airlines, which is currently one of the cheapest options available, starting at £308. British Airways flights start at £325 while deals on LEVEL start at £326 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 £445). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £653). 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 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£460Average£553FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£501Average£914FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£528Average£568FlexibilityNo 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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