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Cheap flights from Key West to London Heathrow Airport from £163

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
14 Feb — 21 Feb1
1 adult
1 adult, Economy, 0 bags

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 15 January 2026.

Round-trip from

£490

One-way from

£163
KLM
  • KLM
  • 25/1-1/2
  • 2 total stops
  • 25h 50m total
  • Key West to London
Search Deals
British Airways
  • British Airways
  • 29/4
  • 1 total stop
  • 17h 59m total
  • Key West to London
Search Deals

Find flight deals from Key West to Heathrow

Enter your travel dates to find the best prices.

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 15 January 2026.

Thu 5/318:28
EYW
-
LHR
1 stop11h 22m
United Airlines
Mon 9/313:25
LHR
-
EYW
2 stops31h 11m
United Airlines
Deal found 14/1£475
Sun 25/118:06
EYW
-
LHR
1 stop12h 34m
KLM
Sun 1/208:55
LHR
-
EYW
1 stop13h 16m
KLM
Deal found 13/1£490
Sun 25/118:06
EYW
-
LHR
1 stop12h 34m
Delta
Sun 1/220:00
LHR
-
EYW
2 stops20h 25m
Delta
Deal found 13/1£493
Sat 28/219:36
EYW
-
LHR
2 stops35h 29m
British Airways
Sat 7/319:20
LHR
-
EYW
2 stops27h 52m
British Airways
Deal found 14/1£522
Sun 25/113:33
EYW
-
LHR
2 stops17h 07m
British Airways
Sun 1/209:15
LHR
-
EYW
2 stops19h 41m
British Airways
Deal found 13/1£525
Sat 28/218:35
EYW
-
LHR
1 stop11h 15m
United Airlines
Sat 7/316:20
LHR
-
EYW
2 stops26h 35m
United Airlines
Deal found 14/1£530
Sun 1/218:05
EYW
-
LHR
1 stop11h 45m
United Airlines
Tue 10/216:20
LHR
-
EYW
1 stop29h 02m
United Airlines
Deal found 13/1£568

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 15 January 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

Thu 5/3

18:28-10:50

1 stop11h 22m

London Heathrow

Mon 9/3

13:25-16:36

2 stops31h 11m

£475

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 25/1

18:06-11:40

1 stop12h 34m

London Heathrow

Sun 1/2

08:55-17:11

1 stop13h 16m

£490

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 25/1

18:06-11:40

1 stop12h 34m

London Heathrow

Sun 1/2

20:00-11:25

2 stops20h 25m

£493

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 25/1

19:45-06:50

1 stop30h 05m

London Heathrow

Sun 1/2

11:15-19:10

1 stop12h 55m

£525

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 28/2

18:35-10:50

1 stop11h 15m

London Heathrow

Sat 7/3

16:20-13:55

2 stops26h 35m

£530

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

18:05-10:50

1 stop11h 45m

London Heathrow

Tue 10/2

16:20-13:03

2 stops25h 43m

£568

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

19:45-08:35

1 stop31h 50m

London Heathrow

Tue 10/2

11:15-19:10

1 stop12h 55m

£596

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 29/4

13:36-12:35

1 stop17h 59m

£163

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 29/4

14:40-11:20

2 stops15h 40m

£164

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 17/2

12:48-06:55

1 stop13h 07m

£241

Flights are sorted by cheapest return flights first.

Deals found on 13/1

Showing 1-10 of 18 results
1
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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 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.

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?

    Key West (EYW), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Key West to London Heathrow. 0 airlines have flights from Key West to London Heathrow on a regular basis. Booking flights from Key West to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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

    Departing from Key West to London Heathrow Airport will take you 12h 34m. The distance from Key West to London Heathrow Airport is about 4539 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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

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

Browse thousands of different options on Cheapflights for your next trip

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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 Key West to Heathrow?

Deals for Key West to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Key West to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Key West by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Key West to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Key West? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Key West to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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