HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$324+ Cheap flights from Florida Keys to Heathrow (LHR)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Florida Keys to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 December 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:30 amMIA - LHR
1 stop31h 50mAustrian Airlines
Mon 1/127:25 pmLHR - MIA
2 stops24h 15mAustrian Airlines
Deal found 12/7$620
This Air Canada deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:05 pmMIA - LHR
2 stops18h 30mAir Canada
Wed 1/289:00 amLHR - MIA
2 stops20h 16mAir Canada
Deal found 12/8$622
This United Airlines deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:45 amMIA - LHR
1 stop16h 55mUnited Airlines
Sun 1/259:00 amLHR - MIA
1 stop13h 30mUnited Airlines
Deal found 12/8$636
This Air Canada deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:20 pmMIA - LHR
1 stop12h 50mAir Canada
Sat 1/246:50 amLHR - MIA
2 stops20h 39mAir Canada
Deal found 12/8$638
This Gotogate deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:05 pmMIA - LHR
1 stop30h 25mMultiple Airlines
Tue 2/247:40 amLHR - MIA
1 stop14h 15mMultiple Airlines
Deal found 12/10$651
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:25 pmMIA - LHR
1 stop13h 00mLufthansa
Mon 1/127:30 pmLHR - MIA
1 stop24h 10mLufthansa
Deal found 12/10$653
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:10 pmMIA - LHR
1 stop12h 45mUnited Airlines
Tue 2/39:00 amLHR - MIA
1 stop13h 30mUnited Airlines
Deal found 12/10$654
This Delta deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:10 pmMIA - LHR
Nonstop8h 50mDelta
Tue 1/136:30 amLHR - MIA
1 stop13h 20mDelta
Deal found 12/7$655
This Delta deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:10 pmMIA - LHR
Nonstop8h 50mDelta
Tue 2/36:30 amLHR - MIA
1 stop13h 20mDelta
Deal found 12/7$656
This FlightHub deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amMIA - LHR
2 stops44h 20mMultiple Airlines
Wed 1/286:35 amLHR - MIA
1 stop15h 20mMultiple Airlines
Deal found 12/10$657
This FlightHub deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amMIA - LHR
1 stop18h 10mMultiple Airlines
Mon 1/121:45 pmLHR - MIA
1 stop29h 55mMultiple Airlines
Deal found 12/7$658
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:20 amMIA - LHR
1 stop20h 10mUnited Airlines
Tue 1/131:45 pmLHR - MIA
1 stop29h 55mUnited Airlines
Deal found 12/7$659

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$610
(Scandinavian Airlines)

One-way from

$324
(JetBlue)
Provider with most accurate pricing for Key West-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-London (LON) flights.
Search Deals
From Florida Keys to London Heathrow
Search Deals
One-way flight from Florida Keys to London Heathrow
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated December 10, 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

Fri 1/9

5:40 pm-10:25 am

1 stop11h 45m

London Heathrow

Mon 1/19

7:40 am-4:55 pm

1 stop14h 15m

$613

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 1/13

5:10 pm-7:00 am

Nonstop8h 50m

London Heathrow

Thu 1/22

6:30 am-2:50 pm

1 stop13h 20m

$614

MiamiLondon

MIA - LHR

MIALHR

Miami

Thu 3/19

6:19 pm-9:40 am

1 stop11h 21m

London Heathrow

Sun 3/22

4:15 pm-5:50 pm

1 stop29h 35m

$617

MiamiLondon

MIA - LHR

MIALHR

Miami

Thu 1/8

5:35 pm-11:15 am

1 stop12h 40m

London Heathrow

Wed 1/14

1:45 pm-5:30 pm

1 stop32h 45m

$618

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 1/13

2:32 pm-8:25 am

1 stop12h 53m

London Heathrow

Tue 1/20

6:35 am-4:55 pm

1 stop15h 20m

$618

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 1/21

1:45 pm-9:20 am

2 stops14h 35m

London Heathrow

Wed 1/28

6:35 am-4:55 pm

1 stop15h 20m

$618

MiamiLondon

MIA - LHR

MIALHR

Miami

Thu 3/19

11:10 pm-12:05 pm

Nonstop8h 55m

London Heathrow

Tue 3/24

6:00 am-4:30 pm

1 stop14h 30m

$620

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 1/12

7:40 am-9:20 am

2 stops20h 40m

London Heathrow

Wed 1/21

7:30 pm-6:35 pm

2 stops28h 05m

$620

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 1/12

5:10 pm-7:00 am

Nonstop8h 50m

London Heathrow

Sun 1/18

9:00 am-5:40 pm

1 stop13h 40m

$620

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 1/17

7:40 am-5:40 pm

2 stops29h 00m

London Heathrow

Fri 1/30

6:40 am-11:20 pm

2 stops21h 40m

$622

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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 round-trip 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 December 10, 2025.
Read reviews from past customers who have flown Delta, Virgin Atlantic, and American Airlines from Florida Keys to London Heathrow Airport. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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
7.5
Good
675 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
Iberia
7.0
Good
3,045 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
British Airways
6.7
Okay
7,573 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.

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

    Airlines like United Airlines, Delta, and Finnair fly from Florida Keys to London Heathrow Airport in about 8h 50m. The time it takes to get you to your destination can typically vary by up to 2h 55m. There are 4414 mi between Florida Keys and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Florida Keys to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with Norse Atlantic UK, which is currently one of the cheapest options available, starting at $139. TAP AIR PORTUGAL flights start at $169 while deals on JetBlue start at $274 one-way.

  • 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 vacation 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

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
Miami to Gatwick flights
Orlando to Gatwick flights
Miami to London City flights
Miami to Stansted flights
Tampa to Gatwick flights
Fort Lauderdale to Heathrow flights
Orlando to London City flights
Miami to Luton flights
Tampa to London City flights
Orlando to Stansted flights
Fort Lauderdale to Gatwick flights
Tampa to Stansted flights
West Palm Beach to Heathrow flights
Orlando to Luton flights
Jacksonville to Heathrow flights
Jacksonville to Gatwick flights
West Palm Beach to Gatwick flights
Jacksonville to London City flights
Pensacola to Heathrow flights
Fort Lauderdale to London City flights
Tampa to Luton flights
Fort Myers to Heathrow flights
Pensacola to Gatwick flights
Sarasota to Heathrow flights
Valparaiso to Heathrow flights
Fort Myers to Gatwick flights
Fort Lauderdale to Stansted flights
Daytona Beach to Heathrow flights
West Palm Beach to London City flights
Pensacola to London City flights
Panama City to Heathrow flights
Miami to Southend flights
Fort Myers to London City flights
Tallahassee to Heathrow flights
Fort Lauderdale to Luton flights
Melbourne to Heathrow flights
Gainesville to Heathrow flights
Sarasota to Gatwick flights
Tallahassee to Gatwick flights
Tallahassee to London City flights
Fort Myers to Stansted flights
Valparaiso to London City flights
Key West to Heathrow flights
Daytona Beach to Gatwick flights
Daytona Beach to London City flights
Key West to Gatwick flights
Valparaiso to Gatwick flights

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.