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Cheap flights from Florida Keys to London Heathrow Airport from £150

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
29 Απρ — 6 Μαϊ1
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 24 Απριλίου 2025.

Round-trip from

£414

One-way from

£150

Popular in

June

Cheapest in

May

Average price

£629
British Airways
  • British Airways
  • 8/5-18/5
  • Nonstop
  • 18h 20m total
  • Florida Keys to London
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 25/7
  • 1 total stop
  • 16h 35m total
  • Florida Keys to London
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£62 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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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 24 Απριλίου 2025.

Δευ 17/1119:45MIA - LHR
1 stop17h 45mScandinavian Airlines
Πεμ 4/1206:40LHR - MIA
1 stop16h 15mScandinavian Airlines
Deal found 24/4£356
Παρ 9/507:55MIA - LHR
1 stop17h 35mMultiple Airlines
Κυρ 11/520:05LHR - MIA
1 stop26h 25mMultiple Airlines
Deal found 23/4£367
Τρι 6/517:00MIA - LHR
1 stop13h 35mUnited Airlines
Δευ 12/508:40LHR - MIA
1 stop13h 50mUnited Airlines
Deal found 22/4£376
Πεμ 8/519:35MIA - LHR
Nonstop8h 50mBritish Airways
Δευ 12/512:15LHR - MIA
Nonstop9h 35mBritish Airways
Deal found 22/4£379
Πεμ 8/522:30MIA - LHR
Nonstop8h 45mDelta
Τετ 14/506:15LHR - MIA
1 stop19h 20mDelta
Deal found 23/4£380
Παρ 9/522:30MIA - LHR
Nonstop8h 45mVirgin Atlantic
Κυρ 18/515:55LHR - MIA
Nonstop9h 40mVirgin Atlantic
Deal found 22/4£381
Παρ 9/507:55MIA - LHR
1 stop17h 35mAir Canada
Κυρ 18/508:30LHR - MIA
2 stops19h 53mAir Canada
Deal found 22/4£389
Κυρ 2/1123:35MIA - LHR
1 stop17h 00mTAP AIR PORTUGAL
Κυρ 9/1108:15LHR - MIA
1 stop18h 35mTAP AIR PORTUGAL
Deal found 24/4£399
Κυρ 21/915:35MIA - LHR
1 stop12h 15mKLM
Δευ 29/909:20LHR - MIA
1 stop14h 28mKLM
Deal found 24/4£479
Παρ 2/514:01MIA - LHR
1 stop14h 29mJetBlue
Παρ 16/508:25LHR - MIA
1 stop19h 48mJetBlue
Deal found 23/4£489
Τετ 21/522:30MIA - LHR
Nonstop8h 45mAir France
Τετ 28/509:35LHR - MIA
1 stop14h 14mAir France
Deal found 24/4£492
Σαβ 8/1116:05EYW - LHR
1 stop14h 10mUnited Airlines
Παρ 14/1113:30LHR - EYW
2 stops54h 36mUnited Airlines
Deal found 24/4£678

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 24 Απριλίου 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

Πεμ 8/5

20:50-10:35

Nonstop8h 45m

London Heathrow

Κυρ 18/5

09:55-14:30

Nonstop9h 35m

£414

MiamiLondon

MIA - LHR

MIALHR

Miami

Παρ 17/10

00:25-17:45

1 stop12h 20m

London Heathrow

Σαβ 25/10

18:45-22:50

1 stop33h 05m

£416

MiamiLondon

MIA - LHR

MIALHR

Miami

Πεμ 8/5

19:25-09:25

Nonstop9h 00m

London Heathrow

Τετ 21/5

11:30-20:15

1 stop13h 45m

£433

MiamiLondon

MIA - LHR

MIALHR

Miami

Τετ 15/10

21:45-20:05

1 stop17h 20m

London Heathrow

Τρι 21/10

20:50-20:00

1 stop28h 10m

£457

MiamiLondon

MIA - LHR

MIALHR

Miami

Πεμ 8/5

22:30-12:15

Nonstop8h 45m

London Heathrow

Τετ 21/5

15:55-20:35

Nonstop9h 40m

£465

MiamiLondon

MIA - LHR

MIALHR

Miami

Παρ 9/5

07:00-16:25

2 stops28h 25m

London Heathrow

Κυρ 11/5

09:30-13:06

2 stops32h 36m

£473

MiamiLondon

MIA - LHR

MIALHR

Miami

Σαβ 20/9

15:35-08:50

1 stop12h 15m

London Heathrow

Τετ 1/10

13:05-20:55

1 stop12h 50m

£479

MiamiLondon

MIA - LHR

MIALHR

Miami

Παρ 3/10

11:35-09:20

2 stops40h 45m

London Heathrow

Δευ 6/10

07:05-23:13

2 stops21h 08m

£482

MiamiLondon

MIA - LHR

MIALHR

Miami

Τετ 21/5

22:30-12:15

Nonstop8h 45m

London Heathrow

Τετ 28/5

09:35-18:49

1 stop14h 14m

£492

MiamiLondon

MIA - LHR

MIALHR

Miami

Τετ 14/5

14:15-10:00

1 stop14h 45m

London Heathrow

Παρ 16/5

17:40-20:49

1 stop32h 09m

£510

Flights are sorted by cheapest return flights first.

Deals found on 24/4

Showing 1-10 of 38 results
1
2
3
4

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 24 Απριλίου 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair 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
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,919 reviews
Delta
8.0
Very Good
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,272 reviews
Delta
8.0
Very Good
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very Good
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,444 reviews
Delta
8.0
Very Good
7,919 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 £150. Users have also found prices from £256 and £276 on Royal Air Maroc and Vueling, 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
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Northampton
Ilford
Hayes
Southend-on-Sea
Crawley
Wembley
Ipswich
Maidstone
Winchester
Swindon
Folkestone
Dartford

Browse thousands of different options on Cheapflights for your next trip

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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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Top airline flying from Florida Keys to Heathrow

Discover the top airline that operate flights from Florida Keys to Heathrow. 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 24 Απριλίου 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£598Average£1,094FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Florida Keys to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from Florida Keys to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Florida Keys to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Florida Keys to Heathrow with no change fees?

Yes, we can. To see specific flights from Florida Keys to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Florida Keys to Heathrow become cheaper?

Of course! You can now track prices for flights from Florida Keys to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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