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Cheap flights from London Heathrow Airport to Key West from £517

LHR — EYW
27 Sep — 4 Oct1
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

Thu 12/1106:50 -
2 stops37h 39m
Thu 26/1111:25 -
1 stop16h 45m
Deal found 25/8£517
Fri 9/1010:25 -
1 stop32h 04m
Sat 24/1016:00 -
1 stop16h 00m
Deal found 25/8£539
Sat 10/1014:10 -
2 stops52h 19m
Sat 24/1016:00 -
1 stop11h 55m
Deal found 24/8£540
Wed 7/1006:30 -
2 stops18h 31m
Wed 14/1011:51 -
1 stop13h 34m
Deal found 23/8£561
Tue 6/1006:15 -
2 stops18h 46m
Tue 13/1014:00 -
1 stop16h 20m
Deal found 24/8£562
Sat 10/1012:15 -
2 stops54h 14m
Sat 24/1016:00 -
1 stop33h 55m
Deal found 25/8£575
Wed 7/1006:15 -
2 stops18h 18m
Wed 14/1013:43 -
1 stop12h 12m
Deal found 24/8£576

Find flight deals from Heathrow to Key West

Round-trip from

£517

Popular in

October

Cheapest in

August

Average price

£411
United Airlines
  • United Airlines
  • 12/11-26/11
  • 3 total stops
  • 54h 24m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£44 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
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

Cheapest return flight

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Thu 12/11

06:50-15:29

2 stops37h 39m

Key West

Thu 26/11

11:25-06:40

2 stops38h 15m

£533

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Fri 9/10

16:00-13:29

1 stop26h 29m

Key West

Sat 24/10

16:00-09:25

2 stops36h 25m

£539
Fastest return journey

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Wed 7/10

06:15-19:33

2 stops18h 18m

Key West

Wed 14/10

13:43-06:55

1 stop12h 12m

£603

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 10/10

08:00-13:29

2 stops58h 29m

Key West

Sat 24/10

16:00-13:00

1 stop16h 00m

£625

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Sorted by cheapest first

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Key West

How much does it cost for a return flight from London Heathrow Airport to Key West?

Airfare is below average for this route at the moment.

London Heathrow Airport to Key West flights typically cost between £536 and £586 in November.
The cheapest return price found within the last 5 days was £517 on United Airlines (12 Nov–26 Nov).

Reviews of airlines servicing Key West

Read through reviews of airlines operating flights from London Heathrow Airport to Key West, such as Virgin Atlantic and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.4
Good
695 reviews
Check prices

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.4
Good
695 reviews
Virgin Atlantic
7.4
Good
695 reviews
Check prices

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,194 reviews
Virgin Atlantic
7.4
Good
695 reviews
Check prices

Comfort

7.3

Food

6.9

Entertainment

7.5

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

  • 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 2 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 37h 39m. 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 £435. Another airline that can offer you cheap pricing is British Airways. Virgin Atlantic is priced at 27% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Heathrow to Key West

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£435Average£656FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£484Average£657FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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