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Cheap flights from Key West to London Heathrow Airport from £686

EYW — LHR
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Key West to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Key West to Heathrow

Mon 7/1207:25 -
1 stop18h 00m
Mon 14/1217:35 -
2 stops28h 35m
Deal found 9/11£686
Mon 7/1211:26 -
1 stop14h 19m
Mon 14/1209:45 -
1 stop14h 45m
Deal found 9/11£729
Wed 2/1213:14 -
1 stop12h 41m
Sat 12/1209:20 -
1 stop32h 03m
Deal found 7/11£742
Thu 10/1214:06 -
1 stop11h 19m
Mon 14/1206:30 -
2 stops18h 31m
Deal found 7/11£746
Wed 2/1212:05 -
1 stop12h 50m
Sat 12/1212:05 -
2 stops52h 19m
Deal found 7/11£750
Thu 10/1211:26 -
2 stops24h 09m
Mon 14/1206:05 -
2 stops18h 25m
Deal found 10/11£752
Sat 26/1219:37 -
1 stop11h 23m
Sat 2/111:15 -
1 stop27h 30m
Deal found 10/11£1,149

Find flight deals from Key West to Heathrow

Round-trip from

£654

Popular in

June

Cheapest in

February

Average price

£692
United Airlines
  • United Airlines
  • 27/4-29/4
  • 4 total stops
  • 71h 47m total
  • Key West to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£275 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£32 potential savings vs. average return price).
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Average for round-trip flights in November 2026
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Mon 7/12

07:25-07:55

2 stops19h 30m

London Heathrow

Mon 14/12

17:35-17:10

2 stops28h 35m

£689

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sun 14/2

18:20-21:20

2 stops22h 00m

London Heathrow

Wed 17/2

18:00-15:29

2 stops26h 29m

£695

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Mon 7/12

11:26-06:45

1 stop14h 19m

London Heathrow

Mon 14/12

09:45-19:30

1 stop14h 45m

£729

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Thu 10/12

16:41-11:30

1 stop13h 49m

London Heathrow

Mon 14/12

06:05-19:30

2 stops18h 25m

£749

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 2/12

15:17-10:50

2 stops14h 33m

London Heathrow

Sat 12/12

13:45-15:26

2 stops54h 41m

£753
Fastest return journey

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Thu 10/12

16:41-08:15

1 stop10h 34m

London Heathrow

Mon 14/12

09:45-19:30

1 stop14h 45m

£767

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sat 26/12

13:23-07:20

1 stop12h 57m

London Heathrow

Sat 2/1

15:35-09:45

2 stops23h 10m

£1,321

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Sorted by cheapest first

Best time to book a flight from Key West to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Key West with our price prediction graph.
Estimated return price

Related info for your journey

  • What airport do you fly from for flights from Key West to London Heathrow?

    Key West (EYW), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Key West to London Heathrow. 0 airlines have flights from Key West to London Heathrow on a regular basis. Booking flights from Key West to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from Key West to London Heathrow Airport?

    Departing from Key West to London Heathrow Airport will take you 19h 30m. The distance from Key West to London Heathrow Airport is about 4539 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Key West to Heathrow that include hotel bookings?

    Yes. In addition to deals on Key West to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Key West to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Heathrow.

  • Can I find deals for business class flights from Key West to Heathrow?

    Yes. Cheapflights offers flight deals from Key West to Heathrow 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Luton
Wembley
Milton Keynes
Gatwick
Slough
Ilford
Hayes
Folkestone
Eastbourne
Croydon
Barnet
Northampton
Southall
Southend-on-Sea
Enfield
Brentford
Dover
Harrow
Watford

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How does Cheapflights help users find flights from Key West to Heathrow?

Deals for Key West to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Key West to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Key West by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Key West to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Key West? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Key West to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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