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Cheap flights from London Heathrow Airport to Key West from £312

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 27 November 2025.

Round-trip from

£505

One-way from

£312

Popular in

March

Cheapest in

May

Average price

£515
Virgin Atlantic
  • Virgin Atlantic
  • 8/4-13/4
  • 2 total stops
  • 29h 51m total
  • London to Key West
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British Airways
  • British Airways
  • 15/4
  • 2 total stops
  • 33h 23m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 27 November 2025.

Thu 27/1109:20LHR - EYW
1 stop31h 33mIcelandair
Thu 4/1212:47EYW - LHR
1 stop13h 08mIcelandair
Deal found 26/11£753
Thu 27/1106:30LHR - EYW
2 stops18h 23mDelta
Thu 4/1212:38EYW - LHR
2 stops15h 07mDelta
Deal found 26/11£794

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 27 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Key West that are best for you.

Fly from

Heathrow

Fly to

Key West

Route

Depart

Return

Price

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

09:20-19:41

1 stop15h 21m

Key West

Mon 13/4

18:00-13:30

1 stop14h 30m

£505

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

10:55-10:57

1 stop29h 02m

Key West

Mon 13/4

07:00-13:30

1 stop25h 30m

£505

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 8/1

10:35-23:56

2 stops18h 21m

Key West

Mon 12/1

19:45-19:00

2 stops18h 15m

£523

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 8/1

08:55-17:11

1 stop13h 16m

Key West

Mon 12/1

18:06-06:25

1 stop31h 19m

£523

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 8/1

12:05-16:22

1 stop33h 17m

Key West

Mon 12/1

18:05-06:40

1 stop31h 35m

£525

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 10/1

18:00-15:17

2 stops26h 17m

Key West

Sat 17/1

14:05-09:10

1 stop14h 05m

£532

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 15/4

06:30-10:53

2 stops33h 23m

£312

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 15/4

12:40-16:41

3 stops33h 01m

£1,841

Flights are sorted by cheapest return flights first.

Deals found on 26/11

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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £446). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £638). 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 27 November 2025.
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
675 reviews
Check prices

Comfort

7.3

Crew

8.2

Overall

7.5

Entertainment

7.5

Food

6.9

Boarding

7.7

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
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Crew

8.2

Overall

7.5

Entertainment

7.5

Food

6.9

Boarding

7.7

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
7.2
Good
11,037 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Crew

8.2

Overall

7.5

Entertainment

7.5

Food

6.9

Boarding

7.7

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
7,539 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Crew

8.2

Overall

7.5

Entertainment

7.5

Food

6.9

Boarding

7.7

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?

    Virgin Atlantic, Delta, and American Airlines can get you from London Heathrow Airport to Key West in just under 15h 21m. Your travel time can differ by up to 13h 41m. 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 £458. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £500, and American Airlines, from £525. British Airways is priced at 32% 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £446). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £638). 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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£458Average£551FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£500Average£840FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£525Average£565FlexibilityNo 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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