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Cheap flights from London Heathrow Airport to Key West from £439

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
14 Oct — 21 Oct1
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 14 September 2025.

Round-trip from

£462

One-way from

£439

Popular in

March

Cheapest in

May

Average price

£511
Virgin Atlantic
  • Virgin Atlantic
  • 3/10-6/10
  • 3 total stops
  • 68h 45m total
  • London to Key West
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6/10
  • 6/10
  • 3 total stops
  • 49h 42m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£80 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Heathrow to Key West

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 14 September 2025.

Fri 3/1009:20LHR - EYW
1 stop15h 47mVirgin Atlantic
Mon 6/1013:57EYW - LHR
1 stop18h 33mVirgin Atlantic
Deal found 13/9£462
Tue 28/1019:20LHR - EYW
2 stops28h 46mVirgin Atlantic
Tue 4/1118:17EYW - LHR
2 stops32h 33mVirgin Atlantic
Deal found 13/9£464
Mon 27/1019:05LHR - EYW
2 stops28h 17mBritish Airways
Sat 8/1116:18EYW - LHR
1 stop14h 47mBritish Airways
Deal found 12/9£474
Tue 28/1011:25LHR - EYW
2 stops27h 27mBritish Airways
Wed 5/1113:33EYW - LHR
1 stop16h 57mBritish Airways
Deal found 12/9£478
Tue 28/1006:20LHR - EYW
2 stops17h 46mDelta
Wed 5/1107:40EYW - LHR
2 stops18h 25mDelta
Deal found 12/9£480
Mon 6/1017:00LHR - EYW
2 stops29h 16mAmerican Airlines
Mon 3/1118:33EYW - LHR
1 stop12h 27mAmerican Airlines
Deal found 13/9£484
Mon 27/1019:40LHR - EYW
2 stops27h 42mBritish Airways
Sun 2/1119:53EYW - LHR
2 stops40h 22mBritish Airways
Deal found 12/9£484
Wed 29/1006:30LHR - EYW
2 stops17h 36mDelta
Thu 6/1113:57EYW - LHR
2 stops14h 38mDelta
Deal found 12/9£487
Tue 28/1009:45LHR - EYW
1 stop13h 37mBritish Airways
Mon 3/1119:53EYW - LHR
1 stop29h 57mBritish Airways
Deal found 12/9£489
Wed 29/1008:55LHR - EYW
1 stop30h 32mKLM
Tue 4/1113:57EYW - LHR
1 stop14h 03mKLM
Deal found 12/9£490

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 14 September 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

Fri 3/10

15:15-20:07

1 stop33h 52m

Key West

Mon 6/10

13:57-05:50

2 stops34h 53m

£462

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 27/10

18:45-19:22

2 stops28h 37m

Key West

Mon 3/11

19:53-06:50

1 stop29h 57m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

06:15-23:59

2 stops21h 44m

Key West

Mon 16/3

20:01-11:30

1 stop11h 29m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 29/10

19:05-10:52

2 stops43h 47m

Key West

Mon 3/11

19:53-06:50

1 stop29h 57m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 27/10

19:05-19:22

2 stops28h 17m

Key West

Sat 8/11

16:18-12:05

1 stop14h 47m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 29/10

18:45-19:22

2 stops28h 37m

Key West

Tue 4/11

19:53-06:50

1 stop29h 57m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 27/10

19:05-19:22

2 stops28h 17m

Key West

Thu 6/11

16:18-11:30

1 stop14h 12m

£474

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 28/10

14:45-20:06

2 stops33h 21m

Key West

Tue 4/11

18:17-07:50

1 stop32h 33m

£478

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 28/10

09:45-19:22

1 stop13h 37m

Key West

Tue 4/11

13:33-06:50

1 stop12h 17m

£478

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 28/10

11:25-10:52

2 stops27h 27m

Key West

Wed 5/11

13:33-11:30

1 stop16h 57m

£478

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 15 results
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’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 58% of one-stop itineraries from London Heathrow Airport to Key West on Cheapflights.

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 30m.

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 30m.

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 Miami (MIA) offer the fastest connection on this route, with an average stopover time of 2h 27m.

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 14 September 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
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

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
7.4
Good
664 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

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
10,000 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

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
7,361 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

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 and British Airways can get you from London Heathrow Airport to Key West in just under 28h 37m. Your travel time can differ by up to 5h 15m. 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 £441. Other airlines that can offer you cheap pricing are British Airways, from £444, and American Airlines, from £511. Virgin Atlantic is priced at 32% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to Key West one-way?

    £543 is the cheapest one-way deal found within the past few days, from Virgin Atlantic. You may also be able to find cheap deals on TAP AIR PORTUGAL and British Airways, with prices starting from £1,839 and £2,207, respectively.

  • 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 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£441Average£780FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£444Average£508FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£511Average£550FlexibilityNo 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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