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Cheap flights from London Heathrow Airport to Key West from £507

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
10 Jul — 17 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 10 June 2026.

Mon 7/906:50
LHR
-
EYW
2 stops35h 39m
United Airlines
Wed 7/1014:20
EYW
-
LHR
1 stop26h 00m
United Airlines
Deal found 9/6£507
Mon 7/907:45
LHR
-
EYW
1 stop34h 44m
Lufthansa
Wed 7/1014:20
EYW
-
LHR
1 stop11h 55m
Lufthansa
Deal found 9/6£515
Thu 18/610:00
LHR
-
EYW
2 stops34h 09m
United Airlines
Mon 22/614:26
EYW
-
LHR
2 stops35h 29m
United Airlines
Deal found 9/6£529
Wed 8/715:20
LHR
-
EYW
2 stops28h 59m
United Airlines
Wed 15/714:26
EYW
-
LHR
1 stop13h 54m
United Airlines
Deal found 9/6£531
Thu 1/1020:55
LHR
-
EYW
2 stops25h 29m
Virgin Atlantic
Mon 30/1111:45
EYW
-
LHR
1 stop16h 15m
Virgin Atlantic
Deal found 7/6£581
Mon 14/909:20
LHR
-
EYW
1 stop15h 30m
Virgin Atlantic
Mon 28/918:19
EYW
-
LHR
1 stop31h 06m
Virgin Atlantic
Deal found 8/6£607
Thu 1/1006:10
LHR
-
EYW
2 stops18h 07m
British Airways
Mon 30/1120:00
EYW
-
LHR
2 stops15h 05m
British Airways
Deal found 7/6£613
Fri 3/707:45
LHR
-
EYW
1 stop34h 45m
Lufthansa
Fri 10/716:00
EYW
-
LHR
2 stops24h 25m
Lufthansa
Deal found 5/6£629
Mon 14/909:55
LHR
-
EYW
1 stop14h 22m
British Airways
Mon 28/913:47
EYW
-
LHR
2 stops17h 13m
British Airways
Deal found 8/6£635
Fri 3/713:50
LHR
-
EYW
2 stops28h 40m
United Airlines
Fri 10/714:26
EYW
-
LHR
1 stop34h 29m
United Airlines
Deal found 5/6£641

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 10 June 2026.

Round-trip from

£507

Popular in

March

Cheapest in

May

Average price

£828
United Airlines
  • United Airlines
  • 7/9-7/10
  • 3 total stops
  • 61h 39m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£62 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 June 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 10 June 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 7/9

06:50-13:29

2 stops35h 39m

Key West

Wed 7/10

14:20-21:20

1 stop26h 00m

£507

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 7/9

07:45-13:29

1 stop34h 44m

Key West

Wed 7/10

14:20-07:15

1 stop11h 55m

£515

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/7

16:00-13:30

1 stop26h 30m

Key West

Wed 15/7

14:26-21:20

1 stop25h 54m

£531

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 1/10

20:55-17:24

2 stops25h 29m

Key West

Mon 30/11

11:45-09:00

1 stop16h 15m

£581

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 1/10

06:10-19:17

2 stops18h 07m

Key West

Mon 30/11

20:00-16:05

2 stops15h 05m

£613
Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 14/9

09:55-19:17

1 stop14h 22m

Key West

Mon 28/9

13:47-12:00

2 stops17h 13m

£635

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 3/7

13:50-13:30

2 stops28h 40m

Key West

Fri 10/7

14:26-05:55

1 stop34h 29m

£641

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 23/8

20:00-19:39

2 stops28h 39m

Key West

Sun 6/9

13:35-06:55

1 stop12h 20m

£706

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/7

06:15-17:23

2 stops16h 08m

Key West

Wed 15/7

14:24-12:10

2 stops16h 46m

£727
Cheapest one-way
Fastest single journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 20/7

16:00-13:30

1 stop26h 30m

£617

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Sorted by cheapest first

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’s the top stopover airport for flights from London Heathrow Airport to Key West?

Share of one-stop return flights from London Heathrow Airport to Key West chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Atlanta (ATL) – chosen by Cheapflights users on 67% of one-stop itineraries from London Heathrow Airport to Key West on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Key West?

Average return fare for one-stop flights from London Heathrow Airport to Key West, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Charlotte (CLT) is the most affordable one-stop option, with an average return flight price of £543.

What’s the fastest stopover option from London Heathrow Airport to Key West?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Key West, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Miami (MIA) have the shortest average one-way travel time for one-stop routes: 13h 24m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Key West?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Key West, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 2h 03m.

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 10 June 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

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.5

Boarding

7.7

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

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.5

Boarding

7.7

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
11,640 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.5

Boarding

7.7

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
8,035 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.5

Boarding

7.7

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, Lufthansa, and Virgin Atlantic can get you from London Heathrow Airport to Key West in just under 25h 29m. Your travel time can differ by up to 10h 10m. 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 £483. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £495, and American Airlines, from £518. British Airways is priced at 25% 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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Alternative routes for Heathrow to Key West

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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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£483Average£559FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£495Average£750FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£518Average£558FlexibilityNo 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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