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Cheap flights from Key West to London Heathrow Airport from £280

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
28 Jun — 5 Jul1
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 29 May 2026.

Thu 5/1113:45
EYW
-
LHR
1 stop16h 45m
British Airways
Wed 11/1107:35
LHR
-
EYW
2 stops16h 54m
British Airways
Deal found 28/5£660
Mon 3/813:57
EYW
-
LHR
1 stop16h 23m
Delta
Thu 13/806:15
LHR
-
EYW
2 stops18h 39m
Delta
Deal found 27/5£721
Mon 3/813:57
EYW
-
LHR
2 stops15h 23m
Virgin Atlantic
Thu 13/806:15
LHR
-
EYW
2 stops16h 05m
Virgin Atlantic
Deal found 27/5£724
Mon 3/818:15
EYW
-
LHR
1 stop12h 05m
KLM
Thu 13/809:20
LHR
-
EYW
1 stop15h 34m
KLM
Deal found 27/5£737
Fri 14/816:50
EYW
-
LHR
1 stop11h 15m
American Airlines
Sun 23/808:15
LHR
-
EYW
2 stops15h 29m
American Airlines
Deal found 24/5£761
Fri 14/818:15
EYW
-
LHR
1 stop12h 05m
Multiple Airlines
Sat 22/806:30
LHR
-
EYW
2 stops18h 24m
Multiple Airlines
Deal found 24/5£767
Fri 14/807:40
EYW
-
LHR
2 stops18h 05m
Delta
Sat 22/806:30
LHR
-
EYW
2 stops18h 24m
Delta
Deal found 24/5£770
Fri 14/813:57
EYW
-
LHR
2 stops16h 23m
Virgin Atlantic
Sun 23/806:15
LHR
-
EYW
2 stops16h 05m
Virgin Atlantic
Deal found 24/5£776
Fri 14/813:41
EYW
-
LHR
1 stop12h 14m
British Airways
Sun 23/809:55
LHR
-
EYW
1 stop14h 44m
British Airways
Deal found 24/5£780

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 29 May 2026.

Round-trip from

£660

One-way from

£280
British Airways
  • British Airways
  • 5/11-11/11
  • 3 total stops
  • 33h 39m total
  • Key West to London
Search Deals
British Airways
  • British Airways
  • 9/10
  • 1 total stop
  • 11h 43m 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 29 May 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

Thu 5/11

20:00-16:05

2 stops15h 05m

London Heathrow

Wed 11/11

07:35-19:29

2 stops16h 54m

£666

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 3/8

13:57-10:20

2 stops15h 23m

London Heathrow

Thu 13/8

06:15-17:20

2 stops16h 05m

£724

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 14/8

07:40-06:45

2 stops18h 05m

London Heathrow

Sat 22/8

06:30-19:54

2 stops18h 24m

£770

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 14/8

13:57-11:20

2 stops16h 23m

London Heathrow

Sun 23/8

06:15-17:20

2 stops16h 05m

£776
Fastest return journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 14/8

13:41-06:55

1 stop12h 14m

London Heathrow

Sun 23/8

09:55-19:39

1 stop14h 44m

£780

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/7

07:50-07:15

1 stop18h 25m

London Heathrow

Wed 22/7

11:45-11:00

2 stops28h 15m

£797

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/7

14:26-11:55

2 stops16h 29m

London Heathrow

Wed 22/7

08:30-15:19

2 stops35h 49m

£806

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/7

11:56-11:20

1 stop18h 24m

London Heathrow

Wed 22/7

09:20-19:51

1 stop15h 31m

£813
Cheapest one-way
Fastest single journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/10

19:52-12:35

1 stop11h 43m

£280

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 9/10

10:59-11:55

3 stops19h 56m

£423

Flights are sorted by cheapest return flights first.

Deals found on 25/5

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 15h 05m. 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
Hounslow
Milton Keynes
Northampton
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Ipswich
Watford
Swindon
Romford
Guildford
Borehamwood

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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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