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Cheap flights from Key West to London Heathrow Airport from £241

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap 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 July 2026.

Tue 27/1013:43
EYW
-
LHR
1 stop18h 22m
British Airways
Tue 3/1106:00
LHR
-
EYW
2 stops18h 29m
British Airways
Deal found 15/7£621
Tue 27/1011:43
EYW
-
LHR
2 stops15h 07m
Virgin Atlantic
Tue 3/1106:20
LHR
-
EYW
2 stops18h 31m
Virgin Atlantic
Deal found 13/7£656
Wed 7/1013:43
EYW
-
LHR
1 stop12h 12m
British Airways
Mon 12/1020:00
LHR
-
EYW
2 stops28h 33m
British Airways
Deal found 14/7£664
Tue 18/818:15
EYW
-
LHR
1 stop12h 05m
Delta
Wed 26/806:30
LHR
-
EYW
2 stops18h 27m
Delta
Deal found 13/7£694
Tue 1/916:56
EYW
-
LHR
1 stop13h 19m
American Airlines
Tue 15/906:15
LHR
-
EYW
2 stops18h 02m
American Airlines
Deal found 12/7£696
Wed 7/1018:11
EYW
-
LHR
1 stop12h 09m
Virgin Atlantic
Mon 12/1009:20
LHR
-
EYW
1 stop12h 56m
Virgin Atlantic
Deal found 14/7£706

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 15 July 2026.

Round-trip from

£621

One-way from

£241
British Airways
  • British Airways
  • 27/10-3/11
  • 3 total stops
  • 36h 51m total
  • Key West to London
Search Deals
British Airways
  • British Airways
  • 21/10
  • 1 total stop
  • 11h 32m total
  • Key West to London
Search Deals

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 July 2026.
Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 27/10

13:43-12:05

1 stop18h 22m

London Heathrow

Tue 3/11

06:00-19:29

2 stops18h 29m

£621

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 27/10

11:43-06:50

2 stops15h 07m

London Heathrow

Tue 3/11

06:20-19:51

2 stops18h 31m

£656

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 7/10

13:43-22:15

2 stops27h 32m

London Heathrow

Mon 12/10

20:00-19:33

2 stops28h 33m

£668

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 25/8

07:40-06:25

1 stop17h 45m

London Heathrow

Tue 1/9

06:30-19:57

2 stops18h 27m

£694
Fastest return journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 1/9

16:56-11:15

1 stop13h 19m

London Heathrow

Tue 15/9

06:15-19:17

2 stops18h 02m

£696
Cheapest one-way
Fastest single journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 21/10

20:03-12:35

1 stop11h 32m

£241

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 21/10

07:40-06:45

2 stops18h 05m

£247

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 10/10

16:00-20:40

2 stops23h 40m

£247

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 10/10

20:03-09:00

1 stop31h 57m

£250

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/10

13:43-06:55

1 stop12h 12m

£279

Flights are sorted by cheapest return flights first.

Deals found on 14/7

Showing 1-10 of 12 resultsSorted by cheapest first
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 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 18h 22m. The distance from Key West to London Heathrow Airport is about 4539 mi.

  • 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
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Watford
Eastbourne
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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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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