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Cheap flights from London Heathrow Airport to Key West from £491

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 20/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
30 Jun — 7 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Key West

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Key West
Explore the most affordable flight options available from Heathrow to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 May 2026.

Tue 29/906:15
LHR
-
EYW
2 stops17h 18m
British Airways
Tue 13/1014:01
EYW
-
LHR
1 stop17h 34m
British Airways
Deal found 30/5£552
Mon 7/906:15
LHR
-
EYW
2 stops18h 24m
British Airways
Wed 7/1014:01
EYW
-
LHR
1 stop17h 34m
British Airways
Deal found 29/5£556
Tue 27/1018:45
LHR
-
EYW
2 stops27h 39m
British Airways
Mon 2/1120:00
EYW
-
LHR
1 stop29h 50m
British Airways
Deal found 30/5£595
Tue 27/1019:05
LHR
-
EYW
2 stops27h 19m
British Airways
Wed 4/1113:45
EYW
-
LHR
2 stops17h 20m
British Airways
Deal found 30/5£606
Sat 3/1007:35
LHR
-
EYW
2 stops39h 58m
British Airways
Wed 7/1019:52
EYW
-
LHR
1 stop11h 43m
British Airways
Deal found 28/5£624
Thu 12/1111:25
LHR
-
EYW
2 stops37h 04m
British Airways
Mon 16/1113:45
EYW
-
LHR
1 stop17h 20m
British Airways
Deal found 27/5£625

Find flight deals from Heathrow to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Key West (EYW). 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 31 May 2026.

Round-trip from

£552

One-way from

£491

Popular in

March

Cheapest in

May

Average price

£520
British Airways
  • British Airways
  • 29/9-13/10
  • 3 total stops
  • 34h 52m total
  • London to Key West
Search Deals
20/6
  • 20/6
  • 3 total stops
  • 56h 47m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Key West 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 31 May 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 26/10

07:40-13:02

2 stops33h 22m

Key West

Wed 4/11

14:30-10:50

2 stops15h 20m

£633
Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 3/10

06:15-18:33

2 stops17h 18m

Key West

Wed 7/10

14:01-11:55

2 stops16h 54m

£634

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/11

12:05-13:02

2 stops29h 57m

Key West

Mon 16/11

16:05-21:20

2 stops24h 15m

£646

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 26/10

18:00-13:02

1 stop23h 02m

Key West

Sat 7/11

16:05-05:55

1 stop32h 50m

£663

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 23/10

07:45-13:34

1 stop34h 49m

Key West

Wed 4/11

14:30-08:25

1 stop12h 55m

£663

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 25/10

09:15-18:24

2 stops37h 09m

Key West

Wed 4/11

20:00-12:05

1 stop11h 05m

£663

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 29/6

18:00-13:30

1 stop24h 30m

Key West

Wed 8/7

14:26-05:55

1 stop34h 29m

£670

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 17/6

12:10-13:30

2 stops30h 20m

Key West

Tue 7/7

16:00-21:25

2 stops24h 25m

£675

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 2/7

16:00-13:30

1 stop26h 30m

Key West

Tue 21/7

14:26-08:20

1 stop12h 54m

£698

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 3/7

08:40-13:30

2 stops33h 50m

Key West

Fri 10/7

14:26-11:55

2 stops16h 29m

£698

Flights are sorted by cheapest return flights first.

Deals found on 27/5

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Heathrow 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 London Heathrow Airport to Key West

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

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £520). Flying from London Heathrow Airport to Key West in March is currently the most expensive (average of £977). 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.

How much does it cost for a return flight from London Heathrow Airport to Key West?

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated 31 May 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Key West, such as Virgin Atlantic,American Airlines, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
American Airlines
7.1
Good
11,642 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,013 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

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

    Most people fly into Key West (EYW) if they book a flight to Key West from London Heathrow. On average, Key West has 0 inbound flights from London Heathrow per day from 3 airlines. Key West is conveniently located just 2.6 mi from Key West’s city center.

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

    United Airlines and British Airways can get you from London Heathrow Airport to Key West in just under 17h 18m. Your travel time can differ by up to 16h 04m. The distance between London Heathrow Airport and Key West is about 4539 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Key West round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Key West round-trip from £480. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £492, and American Airlines, from £515. British Airways is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Key West 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 London Heathrow Airport to Key West?

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £520). Flying from London Heathrow Airport to Key West in March is currently the most expensive (average of £977). 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

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Top 3 airlines flying from Heathrow to Key West

Discover the top 3 airlines that operate flights from Heathrow to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 31 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£480Average£555FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£492Average£745FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£515Average£554FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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 Heathrow to Key West?

Cheapflights helps you search for flights from Heathrow to Key West via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Key West?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Key West by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Key West with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Key West flexibly with Cheapflights today.

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

Yes! Start tracking prices for Heathrow to Key West flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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