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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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Round-trip from

£479

One-way from

£407

Popular in

March

Cheapest in

May

Average price

£903
Virgin Atlantic
  • Virgin Atlantic
  • 1/12-8/12
  • 3 total stops
  • 85h 45m total
  • London to Key West
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Delta
  • Delta
  • 15/12
  • 2 total stops
  • 18h 36m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£66 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
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Average for round-trip flights in October 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 17 October 2025.

Sat 29/1106:30LHR - EYW
2 stops18h 23mVirgin Atlantic
Sat 6/1215:02EYW - LHR
1 stop15h 38mVirgin Atlantic
Deal found 15/10£689
Sat 29/1111:15LHR - EYW
1 stop13h 13mBritish Airways
Sat 6/1216:20EYW - LHR
1 stop14h 45mBritish Airways
Deal found 15/10£707
Sat 29/1113:25LHR - EYW
3 stops26h 55mMultiple Airlines
Sat 6/1214:30EYW - LHR
3 stops35h 40mMultiple Airlines
Deal found 15/10£718
Sat 29/1106:20LHR - EYW
2 stops18h 33mDelta
Sat 6/1207:40EYW - LHR
2 stops18h 25mDelta
Deal found 15/10£744
Fri 24/1008:25LHR - EYW
1 stop32h 44mJetBlue
Mon 27/1012:45EYW - LHR
1 stop14h 10mJetBlue
Deal found 17/10£775
Fri 24/1008:25LHR - EYW
1 stop32h 44mIcelandair
Mon 27/1012:45EYW - LHR
2 stops40h 45mIcelandair
Deal found 17/10£790
Fri 24/1016:40LHR - EYW
2 stops26h 49mUnited Airlines
Mon 27/1014:48EYW - LHR
1 stop13h 37mUnited Airlines
Deal found 17/10£858
Fri 24/1011:20LHR - EYW
1 stop13h 46mMultiple Airlines
Mon 27/1018:17EYW - LHR
1 stop13h 23mMultiple Airlines
Deal found 17/10£920
Sat 29/1107:40LHR - EYW
1 stop36h 39mUnited Airlines
Sat 6/1215:02EYW - LHR
1 stop14h 23mUnited Airlines
Deal found 15/10£1,111

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 17 October 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

Sat 7/3

11:25-23:59

2 stops17h 34m

Key West

Wed 11/3

15:08-09:35

2 stops14h 27m

£509

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

12:05-16:08

1 stop32h 03m

Key West

Mon 16/3

14:22-06:20

1 stop11h 58m

£510

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

11:05-22:11

1 stop16h 06m

Key West

Mon 13/4

16:05-06:45

1 stop33h 40m

£605

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 15/12

06:30-20:06

2 stops18h 36m

£407

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 15/12

22:35-10:07

3 stops40h 32m

£768

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 24/10

18:45-11:53

2 stops46h 08m

£4,475

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 24/10

09:55-19:22

1 stop14h 27m

£6,847

Flights are sorted by cheapest return flights first.

Deals found on 16/10

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 £435). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £639). 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 17 October 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
670 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Overall

7.5

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
670 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Overall

7.5

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
11,040 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Overall

7.5

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
7,459 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Overall

7.5

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?

    American Airlines and United Airlines can get you from London Heathrow Airport to Key West in just under 17h 34m. Your travel time can differ by up to 14h 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 £450. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £483, and American Airlines, from £516. British Airways is priced at 34% 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 £435). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £639). 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£450Average£541FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£483Average£899FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£516Average£555FlexibilityNo 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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