Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Florida Keys to London Heathrow Airport from £139

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
23 nov. — 30 nov.1
1 adult
1 adult, Economy, 0 bags

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 oktober 2025.

Round-trip from

£391

One-way from

£139
Icelandair
  • Icelandair
  • 19/11-27/11
  • 2 total stops
  • 26h 15m total
  • Florida Keys to London
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 10/12
  • 1 total stop
  • 14h 20m total
  • Florida Keys to London
Search Deals

Find flight deals from Florida Keys to Heathrow

Enter your travel dates to find the best prices.

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 oktober 2025.

on. 19/1117:15MIA - LHR
1 stop12h 35mIcelandair
to. 27/1112:15LHR - MIA
1 stop13h 40mIcelandair
Deal found 22/10£391
on. 5/1117:15MIA - LHR
1 stop21h 15mIcelandair
on. 12/1120:35LHR - MIA
1 stop29h 20mIcelandair
Deal found 23/10£391
on. 19/1117:15MIA - LHR
1 stop12h 35mIcelandair
on. 26/1120:35LHR - MIA
1 stop29h 20mIcelandair
Deal found 22/10£392
sø. 9/1123:50MIA - LHR
1 stop17h 50mTAP AIR PORTUGAL
on. 19/1108:15LHR - MIA
1 stop18h 35mTAP AIR PORTUGAL
Deal found 22/10£402
sø. 7/1223:50MIA - LHR
1 stop12h 40mTAP AIR PORTUGAL
sø. 14/1213:40LHR - MIA
1 stop30h 10mTAP AIR PORTUGAL
Deal found 23/10£403
ti. 11/1106:55MIA - LHR
2 stops21h 25mScandinavian Airlines
lø. 6/1206:40LHR - MIA
1 stop16h 25mScandinavian Airlines
Deal found 23/10£409
ti. 2/1216:35MIA - LHR
1 stop19h 55mTAP AIR PORTUGAL
ti. 13/118:30LHR - MIA
1 stop25h 20mTAP AIR PORTUGAL
Deal found 24/10£410
to. 4/1221:10MIA - LHR
1 stop12h 15mMultiple Airlines
on. 10/1218:50LHR - MIA
2 stops29h 05mMultiple Airlines
Deal found 23/10£416
to. 4/1210:19MIA - LHR
3 stops26h 11mMultiple Airlines
ti. 9/1208:15LHR - MIA
2 stops30h 50mMultiple Airlines
Deal found 21/10£423
ti. 2/1212:38EYW - LHR
2 stops16h 37mDelta
on. 10/1206:30LHR - EYW
2 stops18h 36mDelta
Deal found 22/10£449
sø. 7/1218:10EYW - LHR
1 stop32h 40mDelta
sø. 14/1209:00LHR - EYW
2 stops34h 07mDelta
Deal found 22/10£475
ti. 2/1216:04EYW - LHR
1 stop14h 56mAmerican Airlines
on. 10/1211:45LHR - EYW
1 stop15h 01mAmerican Airlines
Deal found 22/10£487

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 oktober 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

ti. 10/3

07:00-09:20

2 stops22h 20m

London Heathrow

ti. 17/3

19:30-19:05

1 stop27h 35m

£398

MiamiLondon

MIA - LHR

MIALHR

Miami

fr. 30/1

11:35-09:20

2 stops16h 45m

London Heathrow

fr. 13/3

21:05-19:35

2 stops26h 30m

£405

MiamiLondon

MIA - LHR

MIALHR

Miami

on. 4/2

07:00-09:20

2 stops21h 20m

London Heathrow

to. 19/2

06:40-18:35

2 stops16h 55m

£405

MiamiLondon

MIA - LHR

MIALHR

Miami

ti. 13/1

11:35-16:00

2 stops23h 25m

London Heathrow

to. 22/1

06:40-18:35

1 stop16h 55m

£419

Key WestLondon

EYW - LHR

EYWLHR

Key West

ti. 2/12

12:38-10:15

2 stops16h 37m

London Heathrow

on. 10/12

06:30-20:06

2 stops18h 36m

£449

MiamiLondon

MIA - LHR

MIALHR

Miami

ti. 11/11

06:55-09:20

2 stops21h 25m

London Heathrow

ma. 17/11

06:40-23:13

2 stops21h 33m

£451

MiamiLondon

MIA - LHR

MIALHR

Miami

to. 15/1

20:40-09:20

1 stop31h 40m

London Heathrow

sø. 25/1

18:40-18:35

1 stop28h 55m

£453

Key WestLondon

EYW - LHR

EYWLHR

Key West

sø. 7/12

18:10-07:50

1 stop32h 40m

London Heathrow

sø. 14/12

09:00-14:07

2 stops34h 07m

£475

MiamiLondon

MIA - LHR

MIALHR

Miami

on. 19/11

21:25-11:10

Nonstop8h 45m

London Heathrow

to. 27/11

14:00-19:25

Nonstop10h 25m

£476

MiamiLondon

MIA - LHR

MIALHR

Miami

ma. 17/11

19:30-11:40

1 stop11h 10m

London Heathrow

to. 27/11

08:55-00:46

1 stop20h 51m

£479

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 30 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
No data available for this route at this time. Please check back soon.

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 oktober 2025.
Read through reviews of airlines operating flights from Florida Keys to London Heathrow Airport, such as Finnair, Virgin Atlantic, andAir France. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Virgin Atlantic
7.5
Good
670 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Air France
7.4
Good
1,477 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
American Airlines
7.2
Good
11,033 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
British Airways
6.7
Okay
7,469 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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.

  • How long is the flight from Florida Keys to London Heathrow Airport?

    A quick flight from Florida Keys to London Heathrow Airport can take about 16h 37m. Scandinavian Airlines provides one of the quickest options available for as low as £449. Florida Keys and London Heathrow Airport are separated by a distance of 4539 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Wembley
Ilford
Deal
Hayes
Colchester
Watford
Crawley
Winchester
Swindon
Chichester
Romford
Ipswich
Bedford

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.
Miami to Heathrow flights
Orlando to Heathrow flights
Tampa to Heathrow flights
Orlando to Gatwick flights
Miami to Gatwick flights
Miami to London City flights
Orlando to London City flights
Fort Lauderdale to Heathrow flights
Miami to Luton flights
Miami to Stansted flights
Tampa to Gatwick flights
Fort Lauderdale to Gatwick flights
Orlando to Luton flights
Orlando to Stansted flights
Jacksonville to Heathrow flights
Jacksonville to Gatwick flights
West Palm Beach to Heathrow flights
Tampa to Luton flights
Pensacola to Heathrow flights
Tampa to Stansted flights
Fort Myers to Heathrow flights
Sarasota to Heathrow flights
Fort Myers to Gatwick flights
West Palm Beach to Gatwick flights
Fort Lauderdale to London City flights
Valparaiso to Heathrow flights
Tallahassee to Heathrow flights
Gainesville to Heathrow flights
Sarasota to Gatwick flights
Panama City to Heathrow flights
Daytona Beach to Heathrow flights
Tallahassee to Gatwick flights
Fort Myers to Stansted flights
Pensacola to Gatwick flights
Valdosta to Heathrow flights
Key West to Heathrow 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 Florida Keys to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Florida Keys today with Cheapflights!

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.

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.