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Cheap flights from London Heathrow Airport to Key West from £407

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
12 Aug — 19 Aug1
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 13 July 2026.

Mon 5/1018:05
LHR
-
EYW
2 stops24h 30m
Finnair
Mon 19/1012:48
EYW
-
LHR
1 stop13h 07m
Finnair
Deal found 9/7£519
Wed 11/1106:15
LHR
-
EYW
2 stops18h 14m
British Airways
Mon 16/1113:45
EYW
-
LHR
1 stop17h 20m
British Airways
Deal found 10/7£552
Mon 5/1009:55
LHR
-
EYW
1 stop14h 38m
British Airways
Mon 19/1013:43
EYW
-
LHR
1 stop12h 12m
British Airways
Deal found 9/7£571
Tue 1/1217:05
LHR
-
EYW
2 stops53h 06m
Virgin Atlantic
Tue 12/118:00
EYW
-
LHR
2 stops33h 45m
Virgin Atlantic
Deal found 12/7£578
Tue 1/1209:45
LHR
-
EYW
1 stop14h 44m
Finnair
Tue 12/119:45
EYW
-
LHR
1 stop31h 30m
Finnair
Deal found 12/7£606
Thu 3/919:45
LHR
-
EYW
2 stops26h 35m
Virgin Atlantic
Tue 8/918:19
EYW
-
LHR
2 stops35h 21m
Virgin Atlantic
Deal found 12/7£622
Tue 1/907:30
LHR
-
EYW
2 stops34h 59m
United Airlines
Sat 31/1014:55
EYW
-
LHR
2 stops35h 00m
United Airlines
Deal found 10/7£625
Fri 25/917:05
LHR
-
EYW
2 stops28h 04m
Finnair
Sun 25/1019:19
EYW
-
LHR
1 stop32h 01m
Finnair
Deal found 9/7£631
Tue 1/909:55
LHR
-
EYW
1 stop13h 36m
Multiple Airlines
Sat 31/1018:11
EYW
-
LHR
2 stops36h 44m
Multiple Airlines
Deal found 10/7£639

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 13 July 2026.

Round-trip from

£519

One-way from

£407

Popular in

March

Cheapest in

November

Average price

£709
Finnair
  • Finnair
  • 5/10-19/10
  • 3 total stops
  • 37h 37m total
  • London to Key West
Search Deals
3/12
  • 3/12
  • 2 total stops
  • 29h 49m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 13 July 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

Tue 1/9

07:30-13:29

2 stops34h 59m

Key West

Sat 31/10

14:55-05:55

2 stops35h 00m

£625

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 23/8

08:30-13:29

2 stops33h 59m

Key West

Sun 6/9

14:15-08:20

1 stop13h 05m

£645

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 10/10

09:00-13:29

2 stops57h 29m

Key West

Sat 24/10

16:00-22:20

2 stops25h 20m

£660

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 1/11

18:45-19:29

2 stops29h 44m

Key West

Thu 31/12

18:00-11:40

1 stop12h 40m

£661

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 25/9

06:50-14:18

2 stops36h 28m

Key West

Sun 25/10

14:55-06:40

2 stops35h 45m

£665

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 25/8

13:50-13:29

2 stops28h 39m

Key West

Tue 1/9

14:15-09:20

1 stop14h 05m

£748

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 23/8

17:35-17:20

2 stops28h 45m

Key West

Sun 6/9

11:48-10:20

2 stops17h 32m

£766
Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 21/8

15:20-13:29

1 stop27h 09m

Key West

Mon 31/8

14:15-08:20

1 stop13h 05m

£806
Cheapest one-way

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 29/10

16:35-19:33

2 stops30h 58m

£430

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 3/12

11:15-23:07

1 stop16h 52m

£432

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 15 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

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 13 July 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
693 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.5

Food

6.9

Boarding

7.7

Entertainment

7.5

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
693 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.5

Food

6.9

Boarding

7.7

Entertainment

7.5

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
11,812 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.5

Food

6.9

Boarding

7.7

Entertainment

7.5

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
8,113 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.5

Food

6.9

Boarding

7.7

Entertainment

7.5

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 can get you from London Heathrow Airport to Key West in just under 34h 59m. Your travel time can differ by up to . The distance between London Heathrow Airport and Key West is about 4539 mi.

  • 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 £471. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £472, and American Airlines, from £556. British Airways is priced at 28% 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.

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 13 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£472Average£665FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£482Average£558FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£517Average£556FlexibilityNo 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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