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$664+ Cheap flights from Key West (EYW) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap 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 February 13, 2026.

This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:43 am
EYW
-
LHR
1 stop17h 17m
KLM
Tue 3/318:55 pm
LHR
-
EYW
2 stops25h 35m
KLM
Deal found 2/9$664
This KLM deal was found by Cheapflights users on 2/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:25 pm
EYW
-
LHR
1 stop13h 50m
KLM
Tue 4/149:20 am
LHR
-
EYW
1 stop13h 03m
KLM
Deal found 2/10$677
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/242:24 pm
EYW
-
LHR
2 stops37h 41m
United Airlines
Tue 3/3112:40 pm
LHR
-
EYW
2 stops33h 59m
United Airlines
Deal found 2/9$679
This Virgin Atlantic deal was found by Cheapflights users on 2/10. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:30 am
EYW
-
LHR
1 stop18h 15m
Virgin Atlantic
Tue 4/149:40 am
LHR
-
EYW
2 stops15h 00m
Virgin Atlantic
Deal found 2/10$682
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 3/247:42 pm
EYW
-
LHR
1 stop12h 23m
American Airlines
Tue 3/319:15 am
LHR
-
EYW
1 stop18h 03m
American Airlines
Deal found 2/9$693
This United Airlines deal was found by Cheapflights users on 2/12. 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 9/142:30 pm
EYW
-
LHR
1 stop12h 50m
United Airlines
Mon 9/288:40 am
LHR
-
EYW
2 stops18h 31m
United Airlines
Deal found 2/12$703
This oojo deal was found by Cheapflights users on 2/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:42 pm
EYW
-
LHR
1 stop10h 23m
British Airways
Tue 4/147:50 am
LHR
-
EYW
2 stops20h 08m
British Airways
Deal found 2/10$721
This KLM deal was found by Cheapflights users on 2/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:00 am
EYW
-
LHR
1 stop18h 25m
KLM
Mon 9/2811:15 am
LHR
-
EYW
1 stop13h 30m
KLM
Deal found 2/12$731
This FlightHub deal was found by Cheapflights users on 2/10. 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.
Mon 4/63:56 pm
EYW
-
LHR
2 stops25h 49m
Multiple Airlines
Tue 4/146:10 am
LHR
-
EYW
2 stops21h 48m
Multiple Airlines
Deal found 2/10$755
This United Airlines deal was found by Cheapflights users on 2/9. 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 2/264:52 pm
EYW
-
LHR
1 stop13h 13m
United Airlines
Mon 3/211:10 am
LHR
-
EYW
2 stops35h 44m
United Airlines
Deal found 2/9$757

Find 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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$664
(KLM)
Provider with most accurate pricing for Key West-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-London Heathrow flights.
Search Deals
From Key West to London Heathrow
Search Deals

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 February 13, 2026.
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

Tue 3/24

11:43 am-9:00 am

1 stop17h 17m

London Heathrow

Tue 3/31

8:55 pm-5:30 pm

2 stops25h 35m

$664

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 4/21

2:35 pm-8:20 am

1 stop12h 45m

London Heathrow

Wed 4/29

9:30 am-5:39 pm

1 stop13h 09m

$677

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 4/6

6:25 pm-1:15 pm

1 stop13h 50m

London Heathrow

Tue 4/14

9:20 am-5:23 pm

1 stop13h 03m

$677

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 4/6

7:30 am-6:45 am

1 stop18h 15m

London Heathrow

Tue 4/14

9:40 am-7:40 pm

2 stops15h 00m

$682

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/24

7:42 pm-12:05 pm

1 stop12h 23m

London Heathrow

Tue 3/31

9:15 am-10:18 pm

1 stop18h 03m

$693

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 4/6

7:42 pm-6:15 pm

2 stops17h 33m

London Heathrow

Tue 4/14

11:30 am-10:58 pm

2 stops40h 28m

$740

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 4/6

3:56 pm-10:45 pm

2 stops25h 49m

London Heathrow

Tue 4/14

6:10 am-10:58 pm

2 stops21h 48m

$755

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 2/26

4:52 pm-11:05 am

1 stop13h 13m

London Heathrow

Mon 3/2

11:10 am-5:54 pm

2 stops35h 44m

$757

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

  • Most accurate provider: When it comes to deals on Key West-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Key West-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 12h 45m. KLM provides one of the quickest options available for as low as $677. 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.

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
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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