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

United Airlines and British Airways are the most popular carriers 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 August 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.

£364 Cheap Flights from London Heathrow Airport to Key West in 2026

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.

06:15 - 19:39

LHR

EYW

18h 24m

2 stops

13:43 - 06:55

EYW

LHR

12h 12m

1 stop

£556British Airways

Mon, 7 Sep - Wed, 7 Oct

09:55 - 19:39

LHR

EYW

14h 44m

1 stop

13:43 - 09:00

EYW

LHR

14h 17m

1 stop

£564British Airways

Mon, 7 Sep - Wed, 7 Oct

17:10 - 17:23

LHR

EYW

29h 13m

2 stops

11:51 - 10:40

EYW

LHR

17h 49m

2 stops

£566Virgin Atlantic

Mon, 7 Sep - Wed, 7 Oct

06:05 - 19:27

LHR

EYW

18h 22m

2 stops

12:00 - 06:45

EYW

LHR

13h 45m

1 stop

£581British Airways

Sat, 7 Nov - Mon, 7 Dec

16:00 - 20:01

LHR

EYW

32h 01m

1 stop

18:11 - 07:50

EYW

LHR

32h 39m

2 stops

£582Virgin Atlantic

Wed, 28 Oct - Mon, 2 Nov

20:05 - 17:23

LHR

EYW

26h 18m

2 stops

18:19 - 10:40

EYW

LHR

35h 21m

2 stops

£591Virgin Atlantic

Wed, 30 Sep - Sun, 4 Oct

10:50 - 20:01

LHR

EYW

13h 11m

1 stop

18:11 - 07:50

EYW

LHR

32h 39m

1 stop

£607KLM

Wed, 28 Oct - Mon, 2 Nov

13:35 - 13:52

LHR

EYW

28h 17m

2 stops

16:10 - 20:35

EYW

LHR

23h 25m

2 stops

£610Lufthansa

Wed, 28 Oct - Mon, 2 Nov

09:15 - 19:17

LHR

EYW

15h 02m

2 stops

10:21 - 06:25

EYW

LHR

15h 04m

2 stops

£669American Airlines

Fri, 11 Sep - Fri, 18 Sep

09:15 - 19:17

LHR

EYW

15h 02m

2 stops

11:30 - 06:25

EYW

LHR

13h 55m

2 stops

£669American Airlines

Fri, 11 Sep - Fri, 18 Sep

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Virgin Atlantic flights from London Heathrow Airport to Key West

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

Virgin Atlantic

7 Sept

LHR17:10London Heathrow

29h 13m

2 stops

EYW17:23Key West

7 Oct

EYW11:51Key West

17h 49m

2 stops

LHR10:40London Heathrow

£566

Virgin Atlantic

28 Oct

LHR16:00London Heathrow

32h 01m

1 stop

EYW20:01Key West

2 Nov

EYW18:11Key West

32h 39m

2 stops

LHR07:50London Heathrow

£582

Virgin Atlantic

30 Sept

LHR09:20London Heathrow

13h 03m

1 stop

EYW17:23Key West

4 Oct

EYW18:19Key West

31h 06m

1 stop

LHR06:25London Heathrow

£591

Lufthansa flights from London Heathrow Airport to Key West

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

Lufthansa

9 Oct

LHR12:00London Heathrow

31h 18m

2 stops

EYW14:18Key West

28 Oct

EYW14:50Key West

16h 15m

1 stop

LHR11:05London Heathrow

£612

Lufthansa

9 Oct

LHR12:00London Heathrow

31h 18m

2 stops

EYW14:18Key West

29 Oct

EYW16:10Key West

33h 45m

1 stop

LHR05:55London Heathrow

£612

Lufthansa

9 Oct

LHR14:10London Heathrow

29h 08m

1 stop

EYW14:18Key West

24 Oct

EYW14:15Key West

14h 55m

1 stop

LHR10:10London Heathrow

£620

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 - EYW

LHREYW

London Heathrow

Mon 7/9

06:15-19:39

2 stops18h 24m

Key West

Wed 7/10

13:43-06:55

1 stop12h 12m

£556

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 7/9

09:55-19:39

1 stop14h 44m

Key West

Wed 7/10

13:43-09:00

1 stop14h 17m

£564

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 7/9

17:10-17:23

2 stops29h 13m

Key West

Wed 7/10

11:51-10:40

2 stops17h 49m

£566

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/11

06:05-19:27

2 stops18h 22m

Key West

Mon 7/12

12:00-06:45

1 stop13h 45m

£581

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 28/10

16:00-20:01

1 stop32h 01m

Key West

Mon 2/11

18:11-07:50

2 stops32h 39m

£582

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 30/9

20:05-17:23

2 stops26h 18m

Key West

Sun 4/10

18:19-10:40

2 stops35h 21m

£591

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 28/10

10:50-20:01

1 stop13h 11m

Key West

Mon 2/11

18:11-07:50

1 stop32h 39m

£607

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 28/10

13:35-13:52

2 stops28h 17m

Key West

Mon 2/11

16:10-20:35

2 stops23h 25m

£610

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 11/9

09:15-19:17

2 stops15h 02m

Key West

Fri 18/9

10:21-06:25

2 stops15h 04m

£669

Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 11/9

09:15-19:17

2 stops15h 02m

Key West

Fri 18/9

11:30-06:25

2 stops13h 55m

£669

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 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 November is also cheap. Prices for this month can be found on momondo for an average of £530.

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

Fastest flight time	18h 23m
Direct flights	None

The fastest flight from London Heathrow Airport to Key West takes 18h 23m

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 18h 23m.
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 August 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 (83% of total bookings). The next most popular airline is British Airways (17%).

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
British Airways	PriceFrom £468	Free Cancellation	Rating 6.7 8,136 reviews		Search British Airways flights
Virgin Atlantic	PriceFrom £469	Free Cancellation	Rating 7.5 694 reviews		Search Virgin Atlantic 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.