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Cheap flights from London Heathrow Airport to Florida Keys from £310

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
3 Jan — 10 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 4 December 2025.

Wed 24/1207:40LHR - MIA
1 stop15h 55mUnited Airlines
Thu 15/113:45MIA - LHR
1 stop11h 55mUnited Airlines
Deal found 2/12£451
Thu 11/1213:25LHR - MIA
1 stop14h 04mAir Canada
Fri 9/108:00MIA - LHR
1 stop18h 10mAir Canada
Deal found 2/12£452
Tue 23/1213:45LHR - MIA
1 stop32h 45mUnited Airlines
Tue 6/118:25MIA - LHR
1 stop31h 15mUnited Airlines
Deal found 2/12£453
Fri 12/1214:30LHR - MIA
1 stop32h 09mAir Canada
Wed 7/118:40MIA - LHR
1 stop36h 10mAir Canada
Deal found 2/12£454
Mon 15/1213:25LHR - MIA
2 stops32h 17mAir Canada
Thu 8/112:20MIA - LHR
2 stops13h 50mAir Canada
Deal found 2/12£454
Tue 9/1211:15LHR - MIA
Nonstop9h 50mBritish Airways
Thu 8/116:54MIA - LHR
1 stop12h 41mBritish Airways
Deal found 2/12£456
Sun 14/1213:25LHR - MIA
1 stop14h 04mAir Canada
Thu 25/1212:20MIA - LHR
2 stops13h 50mAir Canada
Deal found 2/12£457
Wed 24/1213:25LHR - MIA
1 stop14h 04mAir Canada
Mon 12/121:05MIA - LHR
2 stops29h 05mAir Canada
Deal found 2/12£457
Wed 24/1214:45LHR - MIA
1 stop23h 40mBritish Airways
Thu 8/116:44MIA - LHR
1 stop11h 36mBritish Airways
Deal found 1/12£458
Tue 16/1209:10LHR - MIA
1 stop15h 59mAustrian Airlines
Sat 17/112:35MIA - LHR
1 stop15h 35mAustrian Airlines
Deal found 2/12£459
Wed 24/1214:45LHR - MIA
1 stop23h 40mBritish Airways
Wed 14/122:50MIA - LHR
Nonstop8h 30mBritish Airways
Deal found 2/12£460
Mon 15/1210:15LHR - EYW
1 stop34h 52mAmerican Airlines
Tue 23/1213:46EYW - LHR
2 stops16h 29mAmerican Airlines
Deal found 30/11£563

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 4 December 2025.

Round-trip from

£450

One-way from

£310

Popular in

December

Cheapest in

September

Average price

£629
Scandinavian Airlines
  • Scandinavian Airlines
  • 10/1-18/1
  • 3 total stops
  • 56h 45m total
  • London to Florida Keys
Search Deals
British Airways
  • British Airways
  • 26/1
  • 2 total stops
  • 18h 11m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£17 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 4 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

Wed 4/3

08:55-17:40

1 stop13h 45m

Miami

Fri 13/3

18:10-07:00

Nonstop8h 50m

£455

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 4/3

14:00-19:25

Nonstop10h 25m

Miami

Wed 25/3

22:25-11:10

Nonstop8h 45m

£462

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 16/3

09:00-18:30

1 stop13h 30m

Miami

Tue 31/3

10:19-07:40

1 stop16h 21m

£463

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 18/2

09:00-17:30

1 stop13h 30m

Miami

Thu 5/3

19:50-13:00

1 stop12h 10m

£463

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 4/3

09:00-17:30

1 stop13h 30m

Miami

Mon 16/3

18:40-10:25

1 stop11h 45m

£464

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/3

09:00-17:30

1 stop13h 30m

Miami

Tue 17/3

18:40-11:05

1 stop12h 25m

£464

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/3

09:00-17:30

1 stop13h 30m

Miami

Wed 11/3

18:40-10:25

1 stop11h 45m

£464

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/3

14:45-20:10

Nonstop10h 25m

Miami

Fri 13/3

18:10-07:00

Nonstop8h 50m

£467

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 2/3

14:45-20:10

Nonstop10h 25m

Miami

Tue 17/3

18:10-07:00

Nonstop8h 50m

£467

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 3/3

14:45-20:10

Nonstop10h 25m

Miami

Wed 11/3

22:25-11:10

Nonstop8h 45m

£467

Flights are sorted by cheapest return flights first.

Deals found on 1/12

Showing 1-10 of 32 results
1
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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 £443). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £634). 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 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
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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
1,428 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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
1,334 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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
675 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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
2,081 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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
7,559 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Boarding

7.8

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 30m. Fly via Delta, United Airlines, or Virgin Atlantic 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 £178. Norse Atlantic UK flights start at £186 while deals on A.P.G. start at £219 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 £443). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £634). 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 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£455Average£547FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£497Average£796FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£522Average£561FlexibilityNo 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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