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Cheap flights from Florida Keys to London Heathrow Airport from £246

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 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 28 January 2026.

Thu 26/216:35
MIA
-
LHR
1 stop15h 05m
TAP AIR PORTUGAL
Wed 11/308:15
LHR
-
MIA
1 stop18h 35m
TAP AIR PORTUGAL
Deal found 27/1£405
Thu 12/216:35
MIA
-
LHR
1 stop19h 55m
TAP AIR PORTUGAL
Wed 18/206:00
LHR
-
MIA
1 stop13h 50m
TAP AIR PORTUGAL
Deal found 27/1£407
Tue 24/317:35
MIA
-
LHR
1 stop15h 05m
TAP AIR PORTUGAL
Thu 16/406:00
LHR
-
MIA
1 stop13h 30m
TAP AIR PORTUGAL
Deal found 26/1£408
Wed 22/403:50
MIA
-
LHR
1 stop13h 10m
TAP AIR PORTUGAL
Thu 7/519:50
LHR
-
MIA
1 stop23h 45m
TAP AIR PORTUGAL
Deal found 26/1£408
Thu 12/221:10
MIA
-
LHR
1 stop12h 15m
Multiple Airlines
Sun 22/209:55
LHR
-
MIA
1 stop15h 05m
Multiple Airlines
Deal found 26/1£409
Tue 21/416:30
MIA
-
LHR
1 stop12h 50m
TAP AIR PORTUGAL
Wed 29/413:45
LHR
-
MIA
1 stop14h 25m
TAP AIR PORTUGAL
Deal found 27/1£410
Thu 12/216:35
MIA
-
LHR
1 stop13h 50m
TAP AIR PORTUGAL
Tue 24/206:00
LHR
-
MIA
1 stop13h 50m
TAP AIR PORTUGAL
Deal found 26/1£411
Wed 22/403:50
MIA
-
LHR
1 stop14h 05m
TAP AIR PORTUGAL
Fri 1/519:50
LHR
-
MIA
1 stop23h 40m
TAP AIR PORTUGAL
Deal found 27/1£411
Sun 19/400:30
MIA
-
LHR
1 stop13h 20m
TAP AIR PORTUGAL
Sat 25/419:50
LHR
-
MIA
1 stop23h 40m
TAP AIR PORTUGAL
Deal found 27/1£412
Tue 5/516:30
MIA
-
LHR
1 stop12h 50m
TAP AIR PORTUGAL
Mon 11/506:00
LHR
-
MIA
1 stop13h 35m
TAP AIR PORTUGAL
Deal found 27/1£413
Wed 25/318:15
MIA
-
LHR
1 stop21h 15m
Icelandair
Thu 16/413:05
LHR
-
MIA
1 stop13h 50m
Icelandair
Deal found 26/1£414
Thu 12/216:35
MIA
-
LHR
1 stop21h 20m
TAP AIR PORTUGAL
Mon 16/213:40
LHR
-
MIA
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 26/1£415

Find 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 28 January 2026.

Round-trip from

£405

One-way from

£246
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 26/2-11/3
  • 2 total stops
  • 33h 40m total
  • Florida Keys to London
Search Deals
LEVEL
  • LEVEL
  • 22/2
  • 1 total stop
  • 30h 25m total
  • Florida Keys to London
Search Deals

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 28 January 2026.
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

Thu 12/2

16:35-18:55

1 stop21h 20m

London Heathrow

Mon 16/2

13:40-14:50

1 stop30h 10m

£415

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 4/3

21:25-11:10

Nonstop8h 45m

London Heathrow

Thu 12/3

06:30-15:50

1 stop13h 20m

£449

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 7/3

14:21-07:55

1 stop12h 34m

London Heathrow

Mon 16/3

07:40-17:55

1 stop14h 15m

£451

MiamiLondon

MIA - LHR

MIALHR

Miami

Thu 26/2

09:00-07:55

1 stop17h 55m

London Heathrow

Sun 15/3

09:00-18:30

1 stop13h 30m

£451

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 22/2

08:45-10:15

1 stop20h 30m

London Heathrow

Sun 1/3

09:00-17:30

1 stop13h 30m

£451

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 23/2

18:56-12:00

1 stop12h 04m

London Heathrow

Sun 8/3

18:10-17:50

1 stop27h 40m

£452

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 7/3

07:40-06:20

1 stop17h 40m

London Heathrow

Mon 16/3

06:30-21:22

2 stops18h 52m

£459

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 24/2

07:40-06:20

1 stop17h 40m

London Heathrow

Mon 2/3

06:30-18:54

2 stops17h 24m

£459

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 26/2

14:46-07:50

1 stop12h 04m

London Heathrow

Mon 2/3

06:30-17:01

2 stops15h 31m

£462

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 3/5

06:15-07:40

1 stop20h 25m

London Heathrow

Fri 15/5

08:40-17:25

1 stop13h 45m

£464

Flights are sorted by cheapest return flights first.

Deals found on 24/1

Showing 1-10 of 29 results
1
2
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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 28 January 2026.
Read through reviews of airlines operating flights from Florida Keys to London Heathrow Airport, such as KLM, Virgin Atlantic, andAir France. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,443 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,528 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
American Airlines
7.2
Good
11,199 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,705 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 8h 45m. TAP AIR PORTUGAL provides one of the quickest options available for as low as £449. Florida Keys and London Heathrow Airport are separated by a distance of 4414 mi. This flight may include one or multiple stops.

  • 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 £119. Users have also found prices from £268 and £272 on Air France and Virgin Atlantic, 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.

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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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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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.

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