What is the cheapest airline that flies from London Heathrow to Key West?

JetBlue is the most popular carrier operating from London Heathrow to Key West

When did momondo last update prices for flights from London Heathrow Airport to Key West Airport?

Prices for flights from London Heathrow Airport to Key West Airport are refreshed on a daily basis.

How many operators does momondo search for flights from London Heathrow Airport to Key West Airport?

The number of operators available for flights from London Heathrow Airport to Key West Airport is 2 as of October 2026.

How old do you have to be to fly from London Heathrow Airport to Key West Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£504 Cheap Flights from London Heathrow Airport to Key West in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Key West

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:30 - 13:52LHR London Heathrow-EYW Key West

35h 22m2 stops Frankfurt am Main Newark

12:05 - 05:55EYW Key West-LHR London Heathrow

12h 50m1 stop Chicago O'Hare Intl

£505United Airlines

Thu, 26 Nov - Thu, 10 Dec

12:00 - 13:52LHR London Heathrow-EYW Key West

30h 52m1 stop Newark

12:05 - 05:55EYW Key West-LHR London Heathrow

12h 50m1 stop Chicago O'Hare Intl

£529United Airlines

Thu, 26 Nov - Thu, 10 Dec

12:05 - 15:55LHR London Heathrow-EYW Key West

32h 50m1 stop Houston George Bush Intcntl

15:28 - 09:10EYW Key West-LHR London Heathrow

12h 42m1 stop Newark

£537United Airlines

Fri, 5 Mar - Tue, 9 Mar

12:05 - 15:55LHR London Heathrow-EYW Key West

32h 50m1 stop Houston George Bush Intcntl

16:45 - 06:20EYW Key West-LHR London Heathrow

32h 35m2 stops Houston George Bush Intcntl Newark

£537United Airlines

Fri, 5 Mar - Tue, 9 Mar

10:00 - 15:55LHR London Heathrow-EYW Key West

34h 55m1 stop Houston George Bush Intcntl

15:28 - 21:20EYW Key West-LHR London Heathrow

24h 52m1 stop Newark

£537United Airlines

Fri, 5 Mar - Tue, 9 Mar

06:05 - 19:32LHR London Heathrow-EYW Key West

18h 27m2 stops Barcelona-El Prat Miami

17:53 - 11:30EYW Key West-LHR London Heathrow

12h 37m1 stop Miami

£703British Airways

Sat, 6 Mar - Sat, 13 Mar

06:05 - 19:32LHR London Heathrow-EYW Key West

18h 27m2 stops Barcelona-El Prat Miami

17:53 - 16:05EYW Key West-LHR London Heathrow

17h 12m2 stops Miami Madrid Barajas

£753British Airways

Sat, 6 Mar - Sat, 13 Mar

20:10 - 17:10LHR London Heathrow-EYW Key West

26h 00m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

11:43 - 09:55EYW Key West-LHR London Heathrow

17h 12m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

£875Virgin Atlantic

Mon, 9 Nov - Mon, 16 Nov

15:50 - 17:10LHR London Heathrow-EYW Key West

30h 20m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

14:07 - 06:25EYW Key West-LHR London Heathrow

11h 18m1 stop Atlanta Hartsfield-Jackson

£880Virgin Atlantic

Mon, 9 Nov - Mon, 16 Nov

16:00 - 20:00LHR London Heathrow-EYW Key West

33h 00m1 stop Atlanta Hartsfield-Jackson

11:43 - 11:40EYW Key West-LHR London Heathrow

18h 57m1 stop Atlanta Hartsfield-Jackson

£881Virgin Atlantic

Mon, 9 Nov - Mon, 16 Nov

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Finnair flights from London Heathrow Airport to Key West

Our best Finnair deals on London Heathrow Airport to Key West flight tickets

Finnair

17 Dec

LHR16:30London Heathrow

24h 21m

1 stop

EYW11:51Key West

2 Jan

EYW17:31Key West

35h 29m

1 stop

LHR10:00London Heathrow

£1,177

Finnair

17 Dec

LHR19:10London Heathrow

27h 16m

2 stops

EYW17:26Key West

2 Jan

EYW17:31Key West

35h 29m

1 stop

LHR10:00London Heathrow

£1,223

United Airlines flights from London Heathrow Airport to Key West

Our best United Airlines deals on London Heathrow Airport to Key West flight tickets

United Airlines

26 Nov

LHR07:30London Heathrow

35h 22m

2 stops

EYW13:52Key West

10 Dec

EYW12:05Key West

12h 50m

1 stop

LHR05:55London Heathrow

£504

United Airlines

26 Nov

LHR12:00London Heathrow

30h 52m

1 stop

EYW13:52Key West

10 Dec

EYW12:05Key West

12h 50m

1 stop

LHR05:55London Heathrow

£529

United Airlines

5 Mar

LHR12:05London Heathrow

32h 50m

1 stop

EYW15:55Key West

9 Mar

EYW16:45Key West

32h 35m

2 stops

LHR06:20London Heathrow

£537

momondo 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 26/11

07:30-13:52

2 stops35h 22m

Key West

Thu 10/12

12:05-05:55

1 stop12h 50m

£504

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Thu 26/11

12:00-13:52

1 stop30h 52m

Key West

Thu 10/12

12:05-05:55

1 stop12h 50m

£529

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Fri 5/3

12:05-15:55

1 stop32h 50m

Key West

Tue 9/3

15:28-09:10

1 stop12h 42m

£537

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Fri 5/3

12:05-15:55

1 stop32h 50m

Key West

Tue 9/3

16:45-06:20

2 stops32h 35m

£537

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Fri 5/3

10:00-15:55

1 stop34h 55m

Key West

Tue 9/3

15:28-21:20

1 stop24h 52m

£537

Fastest return journey

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 6/3

06:05-19:32

2 stops18h 27m

Key West

Sat 13/3

17:53-11:30

1 stop12h 37m

£703

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 6/3

06:05-19:32

2 stops18h 27m

Key West

Sat 13/3

17:53-16:05

2 stops17h 12m

£753

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Mon 9/11

20:10-17:10

2 stops26h 00m

Key West

Mon 16/11

11:43-09:55

2 stops17h 12m

£875

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Mon 9/11

15:50-17:10

2 stops30h 20m

Key West

Mon 16/11

14:07-06:25

1 stop11h 18m

£880

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Mon 9/11

16:00-20:00

1 stop33h 00m

Key West

Mon 16/11

11:43-11:40

1 stop18h 57m

£881

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between London Heathrow Airport and Key West?

Prices are currently low for flights on this route.

Typical prices usually range from £534 to £787.
The lowest price recently found on this route was £504.

What is the cheapest month to fly to Key West?

If you aren’t able to travel to Key West during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of £416.

When to book flights from London Heathrow Airport to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Key West according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Key West (LHR to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Key West

Best price found	£522
Fastest flight time	28h 02m
Direct flights	None

The best one-way flight to Key West from London Heathrow Airport in the past 72 hours is £522. The best return flight deal from London Heathrow Airport to Key West found on momondo in the last 72 hours is £504.

The fastest flight from London Heathrow Airport to Key West takes 28h 02m

There are no direct flights from London Heathrow Airport to Key West. There are no popular flight routes from London Heathrow Airport to Key West.

Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Key West

How far is London Heathrow to Key West by plane?
The distance between London Heathrow and Key West is about 4541.3 mi. A reasonable flight in good conditions will take 28h 02m.
When did momondo last update prices for flights from London Heathrow Airport to Key West Airport?
Prices for flights from London Heathrow Airport to Key West Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London Heathrow Airport to Key West Airport?
The number of operators available for flights from London Heathrow Airport to Key West Airport is 2 as of October 2026.
How old do you have to be to fly from London Heathrow Airport to Key West Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Heathrow Airport to Key West?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Key West is Virgin Atlantic (80% of total bookings). The next most popular airline is British Airways (20%).

Best airlines flying from London Heathrow Airport to Key West

Compare and see reviews for airlines that fly from London Heathrow Airport to Key West with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom £441	Free Cancellation	Rating 7.5 699 reviews		Search Virgin Atlantic flights
British Airways	PriceFrom £491	Free Cancellation	Rating 6.7 8,275 reviews		Search British Airways flights

Big Pine Key

Why use momondo?

Why should I use momondo to find a flight deal from London to Key West?

Finding the right flight to Key West from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Key West quick and easy, saving you time and money.

Can I find flights from London to Key West with flexible booking policies on momondo?

momondo does allow users to show only those flights to Key West from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Key West?

Once all potential London to Key West flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Key West right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.