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Cheap flights from London Heathrow Airport to Florida Keys from £363

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
7 Feb — 14 Feb1
1 adult
1 adult, Economy, 0 bags

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 8 January 2026.

Round-trip from

£397

One-way from

£363

Popular in

December

Cheapest in

September

Average price

£463
United Airlines
  • United Airlines
  • 20/2-14/3
  • 3 total stops
  • 34h 40m total
  • London to Florida Keys
Search Deals
Royal Air Maroc
  • Royal Air Maroc
  • 15/1
  • 1 total stop
  • 31h 10m total
  • London to Florida Keys
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 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 January 2026
Search Deals

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 8 January 2026.

Mon 23/209:25LHR - MIA
Nonstop10h 25mDelta
Tue 14/418:25MIA - LHR
Nonstop8h 40mDelta
Deal found 8/1£397
Fri 23/112:00LHR - MIA
2 stops17h 16mAir Canada
Mon 2/207:15MIA - LHR
2 stops18h 55mAir Canada
Deal found 7/1£398
Tue 10/214:35LHR - MIA
Nonstop10h 25mDelta
Mon 2/322:00MIA - LHR
Nonstop8h 45mDelta
Deal found 7/1£399
Fri 13/218:00LHR - MIA
1 stop31h 20mAir Canada
Wed 25/212:20MIA - LHR
1 stop13h 10mAir Canada
Deal found 8/1£400
Thu 15/114:35LHR - MIA
Nonstop10h 25mVirgin Atlantic
Thu 22/117:10MIA - LHR
Nonstop8h 50mVirgin Atlantic
Deal found 8/1£400
Sun 12/415:05LHR - MIA
1 stop31h 32mAir Canada
Sat 25/418:40MIA - LHR
1 stop37h 40mAir Canada
Deal found 7/1£401
Mon 13/407:25LHR - MIA
2 stops17h 48mMultiple Airlines
Fri 24/412:25MIA - LHR
1 stop16h 35mMultiple Airlines
Deal found 7/1£402
Fri 20/206:30LHR - EYW
2 stops20h 39mUnited Airlines
Fri 27/218:40EYW - LHR
2 stops20h 55mUnited Airlines
Deal found 6/1£402
Wed 13/511:30LHR - MIA
1 stop14h 15mDelta
Wed 20/519:30MIA - LHR
1 stop14h 05mDelta
Deal found 7/1£403
Mon 16/310:20LHR - MIA
1 stop13h 15mScandinavian Airlines
Mon 23/321:40MIA - LHR
2 stops14h 45mScandinavian Airlines
Deal found 6/1£403
Wed 14/111:15LHR - MIA
Nonstop10h 10mFinnair
Tue 27/118:00MIA - LHR
1 stop10h 40mFinnair
Deal found 6/1£404
Sat 17/111:30LHR - MIA
1 stop14h 00mVirgin Atlantic
Mon 26/117:10MIA - LHR
Nonstop8h 50mVirgin Atlantic
Deal found 7/1£405

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 January 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

Mon 4/5

12:15-22:55

2 stops15h 40m

Miami

Tue 12/5

09:16-06:55

2 stops16h 39m

£400

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 9/6

11:30-20:45

1 stop14h 15m

Miami

Thu 2/7

22:35-12:35

Nonstop9h 00m

£401

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 20/2

06:30-22:09

2 stops20h 39m

Key West

Fri 27/2

18:40-06:40

1 stop31h 00m

£402

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 8/4

12:15-23:22

2 stops16h 07m

Miami

Wed 29/4

14:20-10:40

2 stops15h 20m

£406

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 11/4

13:40-11:09

1 stop26h 29m

Miami

Fri 17/4

08:55-06:55

2 stops17h 00m

£406

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 19/2

06:15-15:10

1 stop13h 55m

Miami

Thu 26/2

17:10-06:50

Nonstop8h 40m

£407

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 8/6

09:55-14:30

Nonstop9h 35m

Miami

Tue 14/7

13:48-07:20

1 stop12h 32m

£409

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 20/2

06:15-15:10

1 stop13h 55m

Miami

Thu 5/3

17:10-06:50

Nonstop8h 40m

£409

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 14/4

11:20-15:55

Nonstop9h 35m

Miami

Tue 28/4

18:05-08:05

Nonstop9h 00m

£410

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 21/2

08:30-22:09

2 stops18h 39m

Key West

Sat 28/2

14:15-09:10

1 stop13h 55m

£410

Flights are sorted by cheapest return flights first.

Deals found on 7/1

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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £433). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £624). 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 January 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
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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
1,346 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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
1,519 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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
7,657 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

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 55m. Fly via United Airlines, Delta, 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 Norse Atlantic UK, which is currently one of the cheapest options available, starting at £174. Scandinavian Airlines flights start at £175 while deals on A.P.G. start at £216 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Florida Keys (average of £433). Flying from London Heathrow Airport to Florida Keys in July is currently the most expensive (average of £624). 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 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£448Average£504FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£489Average£788FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£514Average£553FlexibilityNo 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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