Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Florida Keys from £204

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
16 Jul — 23 Jul1
1 adult

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 11 July 2025.

Round-trip from

£349

One-way from

£204

Popular in

December

Cheapest in

September

Average price

£549
SWISS
  • SWISS
  • 9/9-21/9
  • 2 total stops
  • 34h 50m total
  • London to Florida Keys
Iberia
  • Iberia
  • 14/10
  • 1 total stop
  • 28h 10m total
  • London to Florida Keys
Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Heathrow to Florida Keys

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 11 July 2025.

Tue 9/908:45LHR - MIA
1 stop13h 45mSWISS
Sun 21/919:40MIA - LHR
1 stop21h 05mSWISS
Deal found 9/7£349
Fri 21/1106:40LHR - MIA
1 stop16h 25mScandinavian Airlines
Fri 5/1219:55MIA - LHR
1 stop15h 05mScandinavian Airlines
Deal found 10/7£350
Mon 25/806:30LHR - MIA
1 stop13h 10mMultiple Airlines
Tue 9/919:40MIA - LHR
1 stop17h 10mMultiple Airlines
Deal found 9/7£358
Thu 6/1112:15LHR - MIA
1 stop13h 40mIcelandair
Fri 14/1117:15MIA - LHR
1 stop12h 35mIcelandair
Deal found 9/7£371
Mon 8/910:45LHR - MIA
Nonstop10h 00mVirgin Atlantic
Thu 18/922:30MIA - LHR
Nonstop8h 45mVirgin Atlantic
Deal found 9/7£388
Wed 17/911:30LHR - MIA
1 stop13h 25mBritish Airways
Mon 22/917:00MIA - LHR
Nonstop8h 55mBritish Airways
Deal found 9/7£389
Thu 28/808:40LHR - MIA
1 stop13h 50mUnited Airlines
Thu 11/916:56MIA - LHR
1 stop13h 29mUnited Airlines
Deal found 10/7£394
Mon 10/1106:05LHR - EYW
2 stops17h 28mBritish Airways
Thu 13/1119:33EYW - LHR
1 stop11h 32mBritish Airways
Deal found 10/7£474
Mon 10/1108:50LHR - EYW
2 stops15h 54mVirgin Atlantic
Thu 13/1111:45EYW - LHR
2 stops14h 10mVirgin Atlantic
Deal found 10/7£489
Mon 25/813:40LHR - EYW
1 stop26h 13mFinnair
Mon 1/917:02EYW - LHR
1 stop34h 03mFinnair
Deal found 11/7£545
Fri 8/818:55LHR - EYW
2 stops27h 37mDelta
Fri 15/811:52EYW - LHR
2 stops14h 23mDelta
Deal found 9/7£563
Mon 25/806:30LHR - EYW
2 stops18h 42mKLM
Mon 1/918:20EYW - LHR
1 stop14h 10mKLM
Deal found 10/7£605

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 11 July 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

Tue 9/9

08:45-17:30

1 stop13h 45m

Miami

Sun 21/9

19:40-21:45

1 stop21h 05m

£349

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 21/11

06:40-18:05

1 stop16h 25m

Miami

Fri 5/12

19:55-16:00

1 stop15h 05m

£350

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 25/8

06:30-14:40

1 stop13h 10m

Miami

Tue 9/9

19:40-17:50

1 stop17h 10m

£358

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 6/11

12:15-20:55

1 stop13h 40m

Miami

Fri 14/11

17:15-10:50

1 stop12h 35m

£371

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 1/1

07:40-16:55

1 stop14h 15m

Miami

Thu 22/1

14:30-10:25

1 stop14h 55m

£385

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 8/9

10:45-15:45

Nonstop10h 00m

Miami

Thu 18/9

22:30-12:15

Nonstop8h 45m

£388

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 17/9

11:30-19:55

1 stop13h 25m

Miami

Mon 22/9

17:00-06:55

Nonstop8h 55m

£389

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 28/8

08:40-17:30

1 stop13h 50m

Miami

Sat 20/9

14:28-09:20

1 stop13h 52m

£394

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 10/11

06:05-18:33

2 stops17h 28m

Key West

Thu 13/11

19:33-12:05

1 stop11h 32m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 10/11

08:50-19:44

2 stops15h 54m

Key West

Thu 13/11

11:45-06:55

2 stops14h 10m

£489

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 21 results
1
2
3

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
No data available for this route at this time. Please check back soon.

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 11 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andFinnair 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.

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
8.0
Very Good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.
  • 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 Iberia, which is currently one of the cheapest options available, starting at £204. Vueling flights start at £254 while deals on KLM start at £1,177 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Florida Keys

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Heathrow to Florida Keys

Discover the top 2 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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£424Average£698FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£444Average£507FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.