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

United Airlines, British Airways, and Delta are the most popular carriers operating from London Heathrow to Key West

Which airlines fly to Key West?

Virgin Atlantic, American Airlines and British Airways are the top three most popular airlines that fly to Key West from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

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 3 as of May 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.

£449 Cheap Flights from London Heathrow Airport to Key West in 2026

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

Prices are currently high for flights on this route. Typical prices usually range from £534 to £513. The lowest price recently found on this route was £593.

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Find the cheapest flights from London Heathrow Airport to Key West

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:15 - 18:24

LHR

EYW

17h 09m

2 stops

14:01 - 09:00

EYW

LHR

13h 59m

1 stop

£593British Airways

Fri, 9 Oct - Thu, 15 Oct

09:55 - 18:24

LHR

EYW

13h 29m

1 stop

19:52 - 12:35

EYW

LHR

11h 43m

1 stop

£608British Airways

Fri, 9 Oct - Thu, 15 Oct

08:25 - 19:29

LHR

EYW

40h 04m

2 stops

12:00 - 12:05

EYW

LHR

19h 05m

1 stop

£623British Airways

Thu, 5 Nov - Mon, 9 Nov

10:45 - 19:29

LHR

EYW

37h 44m

2 stops

13:45 - 12:05

EYW

LHR

17h 20m

1 stop

£624British Airways

Thu, 5 Nov - Mon, 9 Nov

10:45 - 19:29

LHR

EYW

37h 44m

2 stops

20:00 - 12:05

EYW

LHR

11h 05m

1 stop

£626British Airways

Thu, 12 Nov - Mon, 16 Nov

11:25 - 19:29

LHR

EYW

37h 04m

2 stops

20:00 - 12:05

EYW

LHR

11h 05m

1 stop

£630British Airways

Thu, 5 Nov - Mon, 9 Nov

09:15 - 19:29

LHR

EYW

39h 14m

2 stops

20:00 - 14:20

EYW

LHR

37h 20m

2 stops

£634British Airways

Thu, 5 Nov - Mon, 9 Nov

06:15 - 18:24

LHR

EYW

17h 09m

2 stops

14:57 - 09:25

EYW

LHR

13h 28m

1 stop

£635American Airlines

Fri, 9 Oct - Thu, 15 Oct

11:25 - 19:29

LHR

EYW

37h 04m

2 stops

13:45 - 17:15

EYW

LHR

22h 30m

2 stops

£638British Airways

Thu, 12 Nov - Mon, 16 Nov

08:40 - 13:30

LHR

EYW

33h 50m

2 stops

14:26 - 21:25

EYW

LHR

25h 59m

1 stop

£639United Airlines

Mon, 22 Jun - Tue, 30 Jun

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

22 Jun

LHR08:40London Heathrow

33h 50m

2 stops

EYW13:30Key West

30 Jun

EYW14:26Key West

25h 59m

1 stop

LHR21:25London Heathrow

£639

United Airlines

22 Jun

LHR07:45London Heathrow

34h 45m

1 stop

EYW13:30Key West

30 Jun

EYW14:26Key West

25h 59m

1 stop

LHR21:25London Heathrow

£667

United Airlines

5 Nov

LHR10:00London Heathrow

34h 06m

2 stops

EYW15:06Key West

9 Nov

EYW16:05Key West

24h 15m

2 stops

LHR21:20London Heathrow

£683

Lufthansa flights from London Heathrow Airport to Key West

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

Lufthansa

22 Jun

LHR09:30London Heathrow

33h 00m

1 stop

EYW13:30Key West

30 Jun

EYW14:26Key West

11h 49m

1 stop

LHR07:15London Heathrow

£644

Lufthansa

2 Jul

LHR16:00London Heathrow

26h 30m

1 stop

EYW13:30Key West

21 Jul

EYW14:26Key West

11h 49m

1 stop

LHR07:15London Heathrow

£671

Lufthansa

2 Jul

LHR09:30London Heathrow

33h 00m

1 stop

EYW13:30Key West

21 Jul

EYW14:26Key West

12h 54m

1 stop

LHR08:20London Heathrow

£675

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

Fri 9/10

06:15-18:24

2 stops17h 09m

Key West

Thu 15/10

14:01-09:00

1 stop13h 59m

£593

Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 9/10

09:55-18:24

1 stop13h 29m

Key West

Thu 15/10

19:52-12:35

1 stop11h 43m

£608

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 5/11

08:25-19:29

2 stops40h 04m

Key West

Mon 9/11

12:00-12:05

1 stop19h 05m

£623

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 5/11

10:45-19:29

2 stops37h 44m

Key West

Mon 9/11

13:45-12:05

1 stop17h 20m

£624

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/11

10:45-19:29

2 stops37h 44m

Key West

Mon 16/11

20:00-12:05

1 stop11h 05m

£626

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 5/11

11:25-19:29

2 stops37h 04m

Key West

Mon 9/11

20:00-12:05

1 stop11h 05m

£630

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 5/11

09:15-19:29

2 stops39h 14m

Key West

Mon 9/11

20:00-14:20

2 stops37h 20m

£634

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 9/10

06:15-18:24

2 stops17h 09m

Key West

Thu 15/10

14:57-09:25

1 stop13h 28m

£635

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/11

11:25-19:29

2 stops37h 04m

Key West

Mon 16/11

13:45-17:15

2 stops22h 30m

£638

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 22/6

08:40-13:30

2 stops33h 50m

Key West

Tue 30/6

14:26-21:25

1 stop25h 59m

£639

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

What is the cheapest month to fly to Key West?

If you aren’t able to travel to Key West during the month of May, then flying in November is also cheap. Prices for this month can be found on momondo for an average of £531.

Can stopping save me money on London Heathrow Airport to Key West flights?

You could potentially save up to 18% on your flight if you consider stops on a London Heathrow Airport to Key West flight.

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	14h 15m
Direct flights	None

The fastest flight from London Heathrow Airport to Key West takes 14h 15m

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 14h 15m.
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 3 as of May 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 (57% of total bookings). The next most popular airlines are American Airlines (26%) and 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 £483	Free Cancellation	Rating 6.7 7,989 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £495	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom £518	Free Cancellation	Rating 7.1 11,648 reviews	Search American Airlines flights

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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.