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Cheap flights from Key West to London from £244

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LON
12 Jun — 19 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Key West to London

Enter your travel dates to find the best prices.

Cheapest flights from Key West to London
Explore the most affordable flight options available from Key West to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 May 2026.

Tue 25/816:50
EYW
-
LHR
1 stop15h 00m
American Airlines
Thu 3/908:15
LHR
-
EYW
2 stops15h 29m
American Airlines
Deal found 13/5£637
Tue 18/813:57
EYW
-
LHR
1 stop11h 28m
Delta
Tue 1/906:30
LHR
-
EYW
2 stops18h 15m
Delta
Deal found 13/5£643
Tue 18/816:57
EYW
-
LHR
1 stop13h 18m
American Airlines
Tue 1/906:15
LHR
-
EYW
2 stops17h 16m
American Airlines
Deal found 9/5£645
Sun 16/813:57
EYW
-
LHR
1 stop18h 18m
Delta
Tue 1/906:15
LHR
-
EYW
2 stops18h 30m
Delta
Deal found 9/5£649
Wed 19/814:20
EYW
-
LHR
2 stops15h 20m
United Airlines
Tue 1/906:50
LHR
-
EYW
2 stops35h 39m
United Airlines
Deal found 9/5£650
Mon 17/807:40
EYW
-
LHR
2 stops18h 35m
Delta
Tue 1/906:15
LHR
-
EYW
2 stops15h 59m
Delta
Deal found 9/5£652
Tue 27/1014:30
EYW
-
LHR
1 stop26h 50m
United Airlines
Fri 30/1013:00
LHR
-
EYW
2 stops55h 06m
United Airlines
Deal found 8/5£658
Tue 18/807:40
EYW
-
LHR
1 stop17h 45m
KLM
Tue 1/909:20
LHR
-
EYW
1 stop15h 25m
KLM
Deal found 13/5£664
Thu 21/518:19
EYW
-
LGW
2 stops16h 41m
Multiple Airlines
Thu 4/610:25
LGW
-
EYW
2 stops38h 24m
Multiple Airlines
Deal found 11/5£966

Find flight deals from Key West to London

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to London (LON). 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 13 May 2026.

Round-trip from

£637

One-way from

£244
American Airlines
  • American Airlines
  • 25/8-3/9
  • 3 total stops
  • 30h 29m total
  • Key West to London
Search Deals
United Airlines
  • United Airlines
  • 10/10
  • 2 total stops
  • 24h 15m total
  • Key West to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Key West to London 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 13 May 2026.
Use the filters below to find and compare flights from Key West to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

13:57-06:25

1 stop11h 28m

London Heathrow

Tue 1/9

06:30-19:45

2 stops18h 15m

£643

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 25/8

13:57-11:20

2 stops16h 23m

London Heathrow

Thu 3/9

06:30-19:45

2 stops18h 15m

£647

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 19/8

14:20-10:40

2 stops15h 20m

London Heathrow

Tue 1/9

06:50-13:29

2 stops35h 39m

£650

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

07:40-06:25

1 stop17h 45m

London Heathrow

Tue 1/9

09:20-19:45

1 stop15h 25m

£664

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 16/8

11:49-13:15

1 stop20h 26m

London Heathrow

Tue 1/9

09:20-19:45

1 stop15h 25m

£664

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 27/10

14:30-11:05

1 stop16h 35m

London Heathrow

Fri 30/10

16:00-13:02

1 stop25h 02m

£668

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 21/8

14:20-07:15

1 stop11h 55m

London Heathrow

Tue 1/9

09:30-13:29

1 stop32h 59m

£705

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 10/10

14:20-10:15

2 stops14h 55m

London Heathrow

Mon 12/10

07:45-13:34

1 stop34h 49m

£740
Cheapest one-way

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 10/10

16:05-21:20

2 stops24h 15m

£244

Key WestLondon

EYW - LGW

EYWLGW

Key West

Sat 10/10

10:04-10:00

3 stops42h 56m

£365

Flights are sorted by cheapest return flights first.

Deals found on 13/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Key West to London

Have a flexible travel schedule? Discover the best time to fly to London 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.

Cheapflights Insights

Everything you need to know about your flight from Key West to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Key West to London. 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?

    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. 0 airlines have flights from Key West to London on a regular basis. Booking flights from Key West to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

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

    For as low as £643, Delta can have you in London from Key West in 11h 28m. Airlines will cover a distance of 4539 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Key West to London that include hotel bookings?

    Yes. In addition to deals on Key West to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Key West to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to London.

  • Can I find deals for business class flights from Key West to London?

    Yes. Cheapflights offers flight deals from Key West to London 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

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How does Cheapflights help users find flights from Key West to London?

Deals for Key West to London 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 London?

Cheapflights helps you find that perfect flight to London 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 London with no change fees?

Certainly. Search results for flights to London from Key West shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Key West to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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