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Cheap flights from Key West to London Heathrow Airport from £289

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Round-trip from

£393

One-way from

£289
Delta
  • Delta
  • 13/10-22/10
  • 3 total stops
  • 47h 31m total
  • Key West to London
Search Deals
15/12
  • 15/12
  • 3 total stops
  • 35h 45m total
  • Key West to London
Search Deals

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 18 September 2025.

Mon 13/1007:40EYW - LHR
1 stop18h 35mDelta
Wed 22/1020:10LHR - EYW
2 stops28h 56mDelta
Deal found 16/9£393
Sun 2/1112:45EYW - LHR
2 stops27h 50mTAP AIR PORTUGAL
Sat 8/1119:55LHR - EYW
2 stops44h 58mTAP AIR PORTUGAL
Deal found 18/9£644
Sun 2/1112:45EYW - LHR
1 stop13h 10mJetBlue
Sat 8/1109:20LHR - EYW
1 stop31h 33mJetBlue
Deal found 18/9£648
Sun 2/1113:57EYW - LHR
1 stop14h 03mMultiple Airlines
Sat 8/1106:05LHR - EYW
2 stops18h 18mMultiple Airlines
Deal found 18/9£650
Thu 18/1216:03EYW - LHR
1 stop15h 02mBritish Airways
Sat 27/1209:45LHR - EYW
1 stop12h 59mBritish Airways
Deal found 17/9£856
Thu 18/1216:40EYW - LHR
1 stop11h 35mAmerican Airlines
Sat 27/1211:00LHR - EYW
2 stops16h 44mAmerican Airlines
Deal found 17/9£905
Thu 18/1217:05EYW - LHR
2 stops22h 30mUnited Airlines
Sat 27/1216:20LHR - EYW
2 stops26h 53mUnited Airlines
Deal found 17/9£1,003
Sun 2/1115:00EYW - LHR
2 stops14h 50mUnited Airlines
Sat 8/1112:05LHR - EYW
3 stops30h 59mUnited Airlines
Deal found 18/9£1,534

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 18 September 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 13/10

07:40-07:15

1 stop18h 35m

London Heathrow

Wed 22/10

20:10-20:06

2 stops28h 56m

£393

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/10

13:57-06:45

1 stop11h 48m

London Heathrow

Wed 22/10

15:15-20:06

1 stop33h 51m

£474

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 18/12

16:03-12:05

1 stop15h 02m

London Heathrow

Sat 27/12

09:45-17:44

1 stop12h 59m

£856

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 18/12

16:40-09:15

1 stop11h 35m

London Heathrow

Sat 27/12

11:00-22:44

2 stops16h 44m

£905

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 18/12

17:05-20:35

2 stops22h 30m

London Heathrow

Sat 27/12

16:20-14:13

2 stops26h 53m

£1,003

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/10

19:52-06:55

1 stop30h 03m

London Heathrow

Wed 22/10

09:55-19:22

1 stop14h 27m

£4,877

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/10

19:52-06:55

1 stop30h 03m

London Heathrow

Wed 22/10

09:55-17:16

1 stop12h 21m

£4,877

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/10

15:12-10:10

1 stop13h 58m

London Heathrow

Wed 22/10

16:40-14:29

2 stops26h 49m

£5,303

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 15/12

14:25-07:10

3 stops35h 45m

£289

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 15/12

12:35-07:50

1 stop14h 15m

£362

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 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 48m. 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.

  • What is the cheapest month to book a flight from Key West to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Key West to London Heathrow Airport (average of £112). Flying from Key West to London Heathrow Airport in August is currently the most expensive (average of £164). 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

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
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

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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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