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Cheap flights from Key West to London Heathrow Airport from £243

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

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 28 October 2025.

Sun 7/1216:10EYW - LHR
1 stop14h 20mAmerican Airlines
Sun 14/1211:45LHR - EYW
1 stop15h 00mAmerican Airlines
Deal found 26/10£506
Sun 7/1212:45EYW - LHR
1 stop13h 10mJetBlue
Thu 11/1209:20LHR - EYW
1 stop31h 35mJetBlue
Deal found 28/10£582
Sun 7/1214:47EYW - LHR
1 stop13h 23mUnited Airlines
Sun 14/1216:20LHR - EYW
2 stops26h 31mUnited Airlines
Deal found 27/10£612
Sun 7/1207:40EYW - LHR
2 stops18h 25mDelta
Sun 14/1210:45LHR - EYW
1 stop14h 21mDelta
Deal found 28/10£630
Sun 7/1213:33EYW - LHR
2 stops23h 47mMultiple Airlines
Sun 14/1206:05LHR - EYW
2 stops18h 30mMultiple Airlines
Deal found 27/10£721
Sun 7/1212:45EYW - LHR
2 stops27h 50mMultiple Airlines
Thu 11/1206:15LHR - EYW
2 stops18h 20mMultiple Airlines
Deal found 28/10£971

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 28 October 2025.

Round-trip from

£450

One-way from

£243
Air France
  • Air France
  • 1/2-10/2
  • 3 total stops
  • 30h 56m total
  • Key West to London
Search Deals
JetBlue
  • JetBlue
  • 9/1
  • 1 total stop
  • 12h 50m 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 28 October 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

Sun 1/2

18:08-11:40

1 stop12h 32m

London Heathrow

Tue 10/2

08:55-19:44

1 stop15h 49m

£455

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

19:45-12:20

1 stop11h 35m

London Heathrow

Tue 10/2

10:45-23:56

2 stops18h 11m

£478

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

18:43-12:00

1 stop12h 17m

London Heathrow

Tue 10/2

11:15-23:56

1 stop17h 41m

£493

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 7/12

16:10-11:30

1 stop14h 20m

London Heathrow

Sun 14/12

11:45-21:45

1 stop15h 00m

£506

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/3

07:00-07:50

1 stop19h 50m

London Heathrow

Sun 15/3

11:45-11:03

2 stops27h 18m

£528

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/3

14:35-07:50

1 stop12h 15m

London Heathrow

Sun 15/3

08:55-19:44

1 stop14h 49m

£529

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

07:10-07:40

2 stops19h 30m

London Heathrow

Tue 10/2

06:20-19:42

2 stops18h 22m

£553

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/1

13:05-06:55

1 stop12h 50m

£243

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/1

09:49-21:35

3 stops54h 46m

£272

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/1

14:25-11:20

2 stops15h 55m

£337

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 11 results
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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 11h 35m. 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.

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

    The cheapet airlines for a one-way flight from Key West to London Heathrow Airport are JetBlue (£243), United Airlines (£337), and American Airlines (£556).

  • 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
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

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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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