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Cheap flights from Florida Keys to London Heathrow Airport from £147

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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
22 Jun — 29 Jun1
1 adult

Cheap flight deals from Florida Keys to Heathrow

Keep the following information in mind while searching for Florida Keys to Heathrow flight deals. Data was last updated 17 June 2025.

Round-trip from

£373

One-way from

£147
23/9-30/9
  • 23/9-30/9
  • 3 total stops
  • 39h 49m total
  • Florida Keys to London
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 30/7
  • 1 total stop
  • 13h 05m total
  • Florida Keys to London
Search Deals

Find flight deals from Florida Keys to Heathrow

Cheapest flights from Florida Keys to Heathrow
Explore the most affordable flight options available from Florida Keys to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 June 2025.

Tue 23/921:35MIA - LHR
1 stop11h 40mMultiple Airlines
Tue 30/909:55LHR - MIA
2 stops28h 09mMultiple Airlines
Deal found 16/6£373
Mon 17/1119:55MIA - LHR
2 stops15h 30mScandinavian Airlines
Thu 4/1206:40LHR - MIA
2 stops16h 25mScandinavian Airlines
Deal found 16/6£377
Sun 7/900:35MIA - LHR
1 stop17h 20mTAP AIR PORTUGAL
Tue 7/1018:45LHR - MIA
1 stop25h 00mTAP AIR PORTUGAL
Deal found 15/6£383
Wed 3/913:29MIA - LHR
1 stop11h 51mBritish Airways
Sat 20/909:55LHR - MIA
Nonstop9h 30mBritish Airways
Deal found 15/6£412
Sun 10/822:30MIA - LHR
Nonstop8h 45mVirgin Atlantic
Tue 19/815:55LHR - MIA
Nonstop9h 40mVirgin Atlantic
Deal found 16/6£436
Sun 10/819:23MIA - LHR
1 stop13h 07mAir France
Tue 19/811:30LHR - MIA
1 stop14h 20mAir France
Deal found 15/6£445
Thu 3/722:30MIA - LHR
Nonstop8h 45mDelta
Tue 8/709:00LHR - MIA
1 stop16h 35mDelta
Deal found 16/6£458
Sat 12/719:00MIA - LHR
1 stop12h 30mAmerican Airlines
Sun 10/814:10LHR - MIA
1 stop12h 44mAmerican Airlines
Deal found 16/6£476
Tue 19/813:29EYW - LHR
1 stop14h 56mBritish Airways
Thu 28/809:55LHR - EYW
1 stop14h 12mBritish Airways
Deal found 15/6£480
Tue 19/817:02EYW - LHR
1 stop12h 18mAmerican Airlines
Thu 28/819:05LHR - EYW
2 stops21h 45mAmerican Airlines
Deal found 16/6£484
Sun 7/919:30MIA - LHR
Nonstop8h 55mIberia
Wed 17/911:30LHR - MIA
1 stop13h 25mIberia
Deal found 16/6£490
Sun 10/811:50MIA - LHR
2 stops13h 40mAir Canada
Tue 19/809:30LHR - MIA
2 stops16h 16mAir Canada
Deal found 15/6£491

Cheapflights Fare Finder

Customise your flight search to find flights from Florida Keys to Heathrow 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 17 June 2025.
Use the filters below to find and compare flights from Florida Keys to London Heathrow Airport that are best for you.

Fly from

Florida Keys

Fly to

Heathrow

Route

Depart

Return

Price

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 23/9

21:35-14:15

1 stop11h 40m

London Heathrow

Tue 30/9

09:55-09:04

2 stops28h 09m

£373

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 17/11

19:55-16:25

2 stops15h 30m

London Heathrow

Thu 4/12

06:40-18:05

2 stops16h 25m

£377

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 7/9

00:35-22:55

1 stop17h 20m

London Heathrow

Tue 7/10

18:45-14:45

1 stop25h 00m

£383

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 3/9

13:29-06:20

1 stop11h 51m

London Heathrow

Sat 20/9

09:55-14:25

Nonstop9h 30m

£412

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 10/8

22:30-12:15

Nonstop8h 45m

London Heathrow

Tue 19/8

15:55-20:35

Nonstop9h 40m

£436

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 10/8

19:23-13:30

1 stop13h 07m

London Heathrow

Tue 19/8

11:30-20:50

1 stop14h 20m

£445

MiamiLondon

MIA - LHR

MIALHR

Miami

Thu 3/7

22:30-12:15

Nonstop8h 45m

London Heathrow

Tue 8/7

09:00-20:35

1 stop16h 35m

£458

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 12/7

19:00-12:30

1 stop12h 30m

London Heathrow

Sun 10/8

14:10-21:54

1 stop12h 44m

£476

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 19/8

13:29-09:25

1 stop14h 56m

London Heathrow

Thu 28/8

09:55-19:07

1 stop14h 12m

£480

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 19/8

11:26-09:25

1 stop16h 59m

London Heathrow

Thu 28/8

19:05-11:50

2 stops21h 45m

£484

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 28 results
1
2
3

Best time to book a flight from Florida Keys to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Florida Keys 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 Florida Keys to London Heathrow Airport

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 17 June 2025.
Get a feel of what it's like to fly with Delta, Finnair and Air France from Florida Keys to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very Good
7,963 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Finnair
7.6
Good
1,292 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Air France
7.5
Good
1,466 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
United Airlines
7.4
Good
8,801 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Virgin Atlantic
7.4
Good
653 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

Related info for your journey

Find useful and relevant information for your journey from Florida Keys to Heathrow. 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 Florida Keys to London Heathrow Airport one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £147. Users have also found prices from £219 and £245 on Icelandair and JetBlue, respectively.

  • Can I find deals for flights from Florida Keys to Heathrow that include hotel bookings?

    Yes. In addition to deals on Florida Keys to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Florida Keys to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Florida Keys to Heathrow.

  • Can I find deals for business class flights from Florida Keys to Heathrow?

    Yes. Cheapflights offers flight deals from Florida Keys to Heathrow 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 Florida Keys to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Florida Keys to London Heathrow Airport (average of £112). Flying from Florida Keys to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Florida Keys?

Book flights to Florida Keys if you plan to visit one of these locations
Milton Keynes
Hounslow
Croydon
Deal
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Watford
Hayes
Southend-on-Sea
Ipswich
Winchester
Folkestone
Maidstone
Swindon

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 Florida Keys to Heathrow

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