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$395+ Cheap flights from Key West (EYW) 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Key West to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$537
(Delta)

One-way from

$395
(Mytrip)
From Key West to London Heathrow
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One-way flight from Key West to London Heathrow
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Find flight deals from Key West to Heathrow

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

This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 10/137:40 amEYW - LHR
1 stop18h 35mDelta
Wed 10/228:10 pmLHR - EYW
2 stops28h 56mDelta
Deal found 9/16$537
This British Airways deal was found by Cheapflights users on 9/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/184:03 pmEYW - LHR
1 stop15h 02mBritish Airways
Sat 12/279:45 amLHR - EYW
1 stop12h 59mBritish Airways
Deal found 9/17$1,168
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/184:40 pmEYW - LHR
1 stop11h 35mAmerican Airlines
Sat 12/2711:00 amLHR - EYW
2 stops16h 44mAmerican Airlines
Deal found 9/17$1,235
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 12/185:05 pmEYW - LHR
2 stops22h 30mUnited Airlines
Sat 12/274:20 pmLHR - EYW
2 stops26h 53mUnited Airlines
Deal found 9/17$1,369
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/184:03 pmEYW - LHR
1 stop15h 02mBritish Airways
Fri 1/211:15 amLHR - EYW
1 stop13h 07mBritish Airways
Deal found 9/15$1,436
This AranGrant deal was found by Cheapflights users on 9/16. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:52 pmEYW - LHR
1 stop30h 03mBritish Airways
Wed 10/229:55 amLHR - EYW
1 stop12h 21mBritish Airways
Deal found 9/16$6,656
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/133:12 pmEYW - LHR
1 stop13h 58mUnited Airlines
Wed 10/224:40 pmLHR - EYW
2 stops26h 49mUnited Airlines
Deal found 9/16$7,237

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key West 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 September 17, 2025.
Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

Fly from

Key West

Fly to

Heathrow

Route

Depart

Return

Price

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 10/13

7:40 am-7:15 am

1 stop18h 35m

London Heathrow

Wed 10/22

8:10 pm-8:06 pm

2 stops28h 56m

$537

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 10/13

1:57 pm-6:45 am

1 stop11h 48m

London Heathrow

Wed 10/22

3:15 pm-8:06 pm

1 stop33h 51m

$647

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/18

4:03 pm-12:05 pm

1 stop15h 02m

London Heathrow

Sat 12/27

9:45 am-5:44 pm

1 stop12h 59m

$1,168

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/18

4:40 pm-9:15 am

1 stop11h 35m

London Heathrow

Sat 12/27

11:00 am-10:44 pm

2 stops16h 44m

$1,235

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/18

5:05 pm-8:35 pm

2 stops22h 30m

London Heathrow

Sat 12/27

4:20 pm-2:13 pm

2 stops26h 53m

$1,369

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/18

4:03 pm-12:05 pm

1 stop15h 02m

London Heathrow

Fri 1/2

11:15 am-7:22 pm

1 stop13h 07m

$1,436

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 10/13

7:52 pm-6:55 am

1 stop30h 03m

London Heathrow

Wed 10/22

9:55 am-7:22 pm

1 stop14h 27m

$6,656

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 10/13

7:52 pm-6:55 am

1 stop30h 03m

London Heathrow

Wed 10/22

9:55 am-5:16 pm

1 stop12h 21m

$6,656

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 12/15

2:25 pm-7:10 am

3 stops35h 45m

$395

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 12/15

12:35 pm-7:50 am

1 stop14h 15m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 11 results
1
2

Best time to book a flight from Key West to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Key West 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.

Related info for your journey

Find useful and relevant information for your journey from Key West to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Key West to London Heathrow?

    If you book a flight to London Heathrow from Key West, you will be flying from Key West, which is the city’s only airport. Key West (EYW) is located 2.6 mi from the center of Key West. There are 0 flights from Key West to London Heathrow per day from 0 different airlines.

  • How long is the flight from Key West to London Heathrow Airport?

    A quick flight from Key West to London Heathrow Airport can take about 11h 48m. Delta provides one of the quickest options available for as low as $647. The distance from Key West to London Heathrow Airport is about 4539 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Key West to Heathrow that include hotel bookings?

    Yes. In addition to deals on Key West to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key West to Heathrow?

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

  • Can I find deals for business class flights from Key West to Heathrow?

    Yes. Cheapflights offers flight deals from Key West 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 Key West to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Key West to London Heathrow Airport (average of $661). Flying from Key West to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone
Chichester

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