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

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
8 Feb — 15 Feb1
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 9 January 2026.

Round-trip from

£403

Popular in

March

Cheapest in

May

Average price

£568
United Airlines
  • United Airlines
  • 20/2-27/2
  • 4 total stops
  • 41h 34m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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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 9 January 2026.

Sat 21/208:30LHR - EYW
2 stops18h 39mUnited Airlines
Sat 28/214:15EYW - LHR
2 stops15h 35mUnited Airlines
Deal found 7/1£411
Fri 6/212:05LHR - EYW
1 stop33h 17mUnited Airlines
Mon 9/218:05EYW - LHR
2 stops36h 10mUnited Airlines
Deal found 6/1£417
Tue 7/406:30LHR - EYW
2 stops18h 11mDelta
Mon 13/407:35EYW - LHR
1 stop24h 40mDelta
Deal found 8/1£437
Tue 7/416:40LHR - EYW
2 stops28h 17mUnited Airlines
Mon 13/416:38EYW - LHR
2 stops33h 07mUnited Airlines
Deal found 6/1£440
Sun 1/216:20LHR - EYW
2 stops25h 43mUnited Airlines
Sun 15/216:52EYW - LHR
1 stop13h 13mUnited Airlines
Deal found 8/1£443
Thu 2/711:15LHR - EYW
1 stop13h 29mDelta
Tue 21/707:00EYW - LHR
1 stop25h 15mDelta
Deal found 8/1£450

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 9 January 2026.
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 6/2

12:05-16:22

1 stop33h 17m

Key West

Mon 9/2

18:05-11:15

2 stops36h 10m

£417

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 21/2

09:10-17:54

1 stop13h 44m

Key West

Sat 28/2

07:00-07:55

1 stop19h 55m

£428

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 7/4

06:30-19:41

2 stops18h 11m

Key West

Mon 13/4

07:35-13:15

1 stop24h 40m

£437

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 1/4

06:30-19:41

2 stops18h 11m

Key West

Wed 8/4

14:40-12:05

2 stops16h 25m

£437

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 7/4

10:00-15:57

1 stop34h 57m

Key West

Mon 13/4

16:38-06:45

2 stops33h 07m

£440

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 1/2

16:20-13:03

2 stops25h 43m

Key West

Sun 15/2

16:52-11:05

1 stop13h 13m

£443

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 20/1

09:20-12:05

1 stop31h 45m

£423

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 20/1

09:55-18:01

1 stop13h 06m

£486

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 20/1

06:40-11:25

3 stops33h 45m

£2,205

Flights are sorted by cheapest return flights first.

Deals found on 7/1

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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £434). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £626). 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.

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 9 January 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
678 reviews
Check prices

Crew

8.2

Overall

7.5

Food

6.9

Comfort

7.3

Boarding

7.7

Entertainment

7.6

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
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Overall

7.5

Food

6.9

Comfort

7.3

Boarding

7.7

Entertainment

7.6

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
11,097 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Overall

7.5

Food

6.9

Comfort

7.3

Boarding

7.7

Entertainment

7.6

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
7,659 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Overall

7.5

Food

6.9

Comfort

7.3

Boarding

7.7

Entertainment

7.6

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?

    United Airlines can get you from London Heathrow Airport to Key West in just under 33h 17m. Your travel time can differ by up to . The distance between London Heathrow Airport and Key West is about 4539 mi.

  • 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 £491, and American Airlines, from £516. British Airways is priced at 30% 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Key West (average of £434). Flying from London Heathrow Airport to Key West in July is currently the most expensive (average of £626). 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£450Average£506FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£491Average£791FlexibilityNo 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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