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Cheap flights from London Heathrow Airport to Key West from £411

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
1 Apr — 8 Apr1
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 2 March 2026.

Mon 13/406:25
LHR
-
EYW
2 stops21h 33m
British Airways
Wed 13/515:58
EYW
-
LHR
1 stop14h 07m
British Airways
Deal found 2/3£461
Mon 5/1006:15
LHR
-
EYW
2 stops17h 09m
British Airways
Mon 19/1019:52
EYW
-
LHR
1 stop11h 43m
British Airways
Deal found 2/3£462
Mon 13/406:25
LHR
-
EYW
2 stops21h 33m
British Airways
Mon 20/415:58
EYW
-
LHR
1 stop12h 02m
British Airways
Deal found 27/2£472
Tue 14/407:50
LHR
-
EYW
2 stops20h 08m
British Airways
Tue 21/415:58
EYW
-
LHR
1 stop15h 37m
British Airways
Deal found 28/2£478
Mon 13/420:55
LHR
-
EYW
2 stops27h 45m
Virgin Atlantic
Wed 13/511:48
EYW
-
LHR
2 stops21h 47m
Virgin Atlantic
Deal found 2/3£489

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 2 March 2026.

Round-trip from

£461

One-way from

£411

Popular in

March

Cheapest in

May

Average price

£945
British Airways
  • British Airways
  • 13/4-13/5
  • 3 total stops
  • 35h 40m total
  • London to Key West
Search Deals
British Airways
  • British Airways
  • 20/5
  • 1 total stop
  • 12h 23m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£86 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 2 March 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

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 13/4

06:25-22:58

2 stops21h 33m

Key West

Mon 20/4

11:24-09:00

1 stop16h 36m

£489

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 13/4

16:40-16:42

1 stop29h 02m

Key West

Mon 20/4

18:22-06:55

1 stop31h 33m

£509

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 7/4

11:05-16:42

2 stops34h 37m

Key West

Mon 13/4

18:22-06:55

1 stop31h 33m

£558

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 16/4

13:40-14:51

2 stops30h 11m

Key West

Sat 25/4

15:47-06:55

2 stops34h 08m

£578

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 2/7

16:00-15:07

2 stops28h 07m

Key West

Tue 21/7

14:26-07:15

1 stop11h 49m

£590

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 18/6

16:40-13:30

2 stops25h 50m

Key West

Mon 22/6

14:26-07:15

1 stop11h 49m

£618

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 18/6

06:15-19:10

2 stops17h 55m

Key West

Mon 22/6

13:37-12:35

1 stop17h 58m

£628

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 2/7

19:10-19:21

2 stops53h 11m

Key West

Tue 21/7

13:34-18:55

2 stops24h 21m

£644

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 20/5

11:30-19:10

2 stops36h 40m

£429

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 8/3

21:40-12:21

3 stops42h 41m

£575

Flights are sorted by cheapest return flights first.

Deals found on 28/2

Showing 1-10 of 12 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £449). Flying from London Heathrow Airport to Key West in June is currently the most expensive (average of £621). 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 2 March 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
680 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.6

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
680 reviews
Virgin Atlantic
7.5
Good
680 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.6

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
American Airlines
7.1
Good
11,371 reviews
Virgin Atlantic
7.5
Good
680 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.6

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,773 reviews
Virgin Atlantic
7.5
Good
680 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.6

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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?

    British Airways and United Airlines can get you from London Heathrow Airport to Key West in just under 21h 33m. Your travel time can differ by up to 7h 29m. 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 £448. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £489, and American Airlines, from £514. British Airways is priced at 31% 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £449). Flying from London Heathrow Airport to Key West in June is currently the most expensive (average of £621). 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 2 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£448Average£539FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£489Average£761FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£514Average£553FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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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