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

British Airways, United Airlines, 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 56% 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 April 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.

£467 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 low for flights on this route. Typical prices usually range from £838 to £589. The lowest price recently found on this route was £537.

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London Heathrow Airport to Key West

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 22:58

LHR

EYW

21h 28m

2 stops

15:58 - 11:05

EYW

LHR

14h 07m

1 stop

£537British Airways

Wed, 13 May - Wed, 20 May

15:00 - 22:58

LHR

EYW

12h 58m

1 stop

11:24 - 11:05

EYW

LHR

18h 41m

1 stop

£556British Airways

Wed, 13 May - Wed, 20 May

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

13:59 - 06:55

EYW

LHR

11h 56m

1 stop

£575British Airways

Thu, 17 Sep - Mon, 21 Sep

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

12:05 - 09:00

EYW

LHR

15h 55m

1 stop

£596British Airways

Thu, 17 Sep - Mon, 21 Sep

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

19:51 - 12:35

EYW

LHR

11h 44m

1 stop

£598British Airways

Sat, 26 Sep - Wed, 30 Sep

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

12:05 - 06:55

EYW

LHR

13h 50m

1 stop

£599British Airways

Thu, 17 Sep - Mon, 21 Sep

06:15 - 22:36

LHR

EYW

21h 21m

2 stops

11:28 - 09:10

EYW

LHR

16h 42m

2 stops

£605American Airlines

Wed, 13 May - Fri, 22 May

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

13:59 - 18:55

EYW

LHR

23h 56m

2 stops

£607British Airways

Thu, 17 Sep - Mon, 21 Sep

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

19:51 - 22:15

EYW

LHR

45h 24m

2 stops

£609British Airways

Sat, 26 Sep - Wed, 30 Sep

06:15 - 18:27

LHR

EYW

17h 12m

2 stops

13:59 - 18:55

EYW

LHR

23h 56m

2 stops

£611British Airways

Thu, 17 Sep - Mon, 21 Sep

British Airways flights from London Heathrow Airport to Key West

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

British Airways

13 May

LHR06:30London Heathrow

21h 28m

2 stops

EYW22:58Key West

20 May

EYW15:58Key West

14h 07m

1 stop

LHR11:05London Heathrow

£537

British Airways

13 May

LHR15:00London Heathrow

12h 58m

1 stop

EYW22:58Key West

20 May

EYW11:24Key West

18h 41m

1 stop

LHR11:05London Heathrow

£556

British Airways

17 Sept

LHR06:15London Heathrow

17h 12m

2 stops

EYW18:27Key West

21 Sept

EYW13:59Key West

11h 56m

1 stop

LHR06:55London Heathrow

£575

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

12 May

LHR13:40London Heathrow

31h 22m

1 stop

EYW16:02Key West

19 May

EYW14:49Key West

11h 26m

1 stop

LHR07:15London Heathrow

£602

United Airlines

11 May

LHR10:00London Heathrow

35h 02m

1 stop

EYW16:02Key West

27 May

EYW14:26Key West

11h 49m

1 stop

LHR07:15London Heathrow

£637

United Airlines

11 May

LHR16:40London Heathrow

26h 05m

2 stops

EYW13:45Key West

25 May

EYW14:26Key West

11h 49m

1 stop

LHR07:15London Heathrow

£655

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

Wed 13/5

06:30-22:58

2 stops21h 28m

Key West

Wed 20/5

15:58-11:05

1 stop14h 07m

£537

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 13/5

15:00-22:58

1 stop12h 58m

Key West

Wed 20/5

11:24-11:05

1 stop18h 41m

£556

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 17/9

06:15-18:27

2 stops17h 12m

Key West

Mon 21/9

13:59-06:55

1 stop11h 56m

£575

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 17/9

06:15-18:27

2 stops17h 12m

Key West

Mon 21/9

12:05-09:00

1 stop15h 55m

£596

Fastest return journey

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 26/9

06:15-18:27

2 stops17h 12m

Key West

Wed 30/9

19:51-12:35

1 stop11h 44m

£598

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 17/9

06:15-18:27

2 stops17h 12m

Key West

Mon 21/9

12:05-06:55

1 stop13h 50m

£599

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 13/5

06:15-22:36

2 stops21h 21m

Key West

Fri 22/5

11:28-09:10

2 stops16h 42m

£605

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 17/9

06:15-18:27

2 stops17h 12m

Key West

Mon 21/9

13:59-18:55

2 stops23h 56m

£607

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 26/9

06:15-18:27

2 stops17h 12m

Key West

Wed 30/9

19:51-22:15

2 stops45h 24m

£609

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 17/9

06:15-18:27

2 stops17h 12m

Key West

Mon 21/9

13:59-18:55

2 stops23h 56m

£611

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 £537.

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	15h 20m
Direct flights	None

The fastest flight from London Heathrow Airport to Key West takes 15h 20m

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 15h 20m.
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 April 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 (56% of total bookings). The next most popular airlines are American Airlines (23%) and 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
British Airways	PriceFrom £469	Free Cancellation	Rating 6.7 7,843 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £499	Free Cancellation	Rating 7.5 685 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom £524	Free Cancellation	Rating 7.1 11,553 reviews	Search American Airlines 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.