Which airlines fly to Key West?

Virgin Atlantic, British Airways and American Airlines 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 47% 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 November 2025.

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.

£435 Cheap Flights from London Heathrow Airport to Key West in 2025/26

1 adult

0 bags

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

Cheap return flights

Enter your travel dates to find the best prices.

11:15 - 23:07LHR-EYW

16h 52m1 stop

12:00 - 06:50EYW-LHR

13h 50m1 stop

£475British Airways

Find Deal

Wed, 3 Dec - Wed, 10 Dec

08:15 - 23:56LHR-EYW

44h 41m2 stops

13:33 - 11:30EYW-LHR

16h 57m1 stop

£491British Airways

Find Deal

Tue, 6 Jan - Mon, 26 Jan

08:55 - 20:06LHR-EYW

16h 11m1 stop

11:47 - 09:00EYW-LHR

16h 13m1 stop

£492Virgin Atlantic

Find Deal

Thu, 18 Dec - Thu, 25 Dec

19:05 - 19:10LHR-EYW

29h 05m2 stops

13:33 - 12:20EYW-LHR

17h 47m1 stop

£495British Airways

Find Deal

Sun, 11 Jan - Mon, 2 Feb

10:45 - 20:06LHR-EYW

14h 21m1 stop

15:02 - 10:50EYW-LHR

14h 48m2 stops

£499Virgin Atlantic

Find Deal

Wed, 3 Dec - Wed, 10 Dec

06:15 - 23:59LHR-EYW

21h 44m2 stops

17:24 - 09:40EYW-LHR

12h 16m2 stops

£513American Airlines

Find Deal

Thu, 12 Mar - Mon, 16 Mar

08:55 - 17:13LHR-EYW

13h 18m1 stop

14:45 - 07:50EYW-LHR

12h 05m1 stop

£515Delta

Find Deal

Tue, 6 Jan - Thu, 29 Jan

15:10 - 16:22LHR-EYW

30h 12m2 stops

16:15 - 11:15EYW-LHR

14h 00m1 stop

£521United Airlines

Find Deal

Mon, 5 Jan - Thu, 29 Jan

15:10 - 16:22LHR-EYW

30h 12m2 stops

14:25 - 11:20EYW-LHR

15h 55m2 stops

£527United Airlines

Find Deal

Mon, 5 Jan - Wed, 28 Jan

08:55 - 17:13LHR-EYW

13h 18m1 stop

14:45 - 07:50EYW-LHR

12h 05m1 stop

£534Delta

Find Deal

Tue, 6 Jan - Sat, 24 Jan

Delta flights from London Heathrow Airport to Key West

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

Delta

6 Jan

LHR08:55London Heathrow

13h 18m

1 stop

EYW17:13Key West

29 Jan

EYW14:45Key West

12h 05m

1 stop

LHR07:50London Heathrow

£515

Find similar

Delta

6 Jan

LHR08:55London Heathrow

13h 18m

1 stop

EYW17:13Key West

24 Jan

EYW14:45Key West

12h 05m

1 stop

LHR07:50London Heathrow

£534

Find similar

Delta

8 Jan

LHR06:20London Heathrow

18h 22m

2 stops

EYW19:42Key West

31 Jan

EYW14:45Key West

15h 55m

1 stop

LHR11:40London Heathrow

£553

Find similar

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

18 Dec

LHR08:55London Heathrow

16h 11m

1 stop

EYW20:06Key West

25 Dec

EYW11:47Key West

16h 13m

1 stop

LHR09:00London Heathrow

£492

Find similar

Virgin Atlantic

3 Dec

LHR10:45London Heathrow

14h 21m

1 stop

EYW20:06Key West

10 Dec

EYW15:02Key West

14h 48m

2 stops

LHR10:50London Heathrow

£499

Find similar

Virgin Atlantic

12 Mar

LHR15:50London Heathrow

31h 54m

1 stop

EYW19:44Key West

16 Mar

EYW18:00Key West

11h 00m

1 stop

LHR09:00London Heathrow

£516

Find similar

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

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 3/12

11:15-23:07

1 stop16h 52m

Key West

Wed 10/12

12:00-06:50

1 stop13h 50m

£475

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 6/1

08:15-23:56

2 stops44h 41m

Key West

Mon 26/1

13:33-11:30

1 stop16h 57m

£491

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 18/12

08:55-20:06

1 stop16h 11m

Key West

Thu 25/12

11:47-09:00

1 stop16h 13m

£492

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 11/1

19:05-19:10

2 stops29h 05m

Key West

Mon 2/2

13:33-12:20

1 stop17h 47m

£495

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 3/12

10:45-20:06

1 stop14h 21m

Key West

Wed 10/12

15:02-10:50

2 stops14h 48m

£499

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

06:15-23:59

2 stops21h 44m

Key West

Mon 16/3

17:24-09:40

2 stops12h 16m

£513

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 6/1

08:55-17:13

1 stop13h 18m

Key West

Thu 29/1

14:45-07:50

1 stop12h 05m

£515

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 5/1

15:10-16:22

2 stops30h 12m

Key West

Thu 29/1

16:15-11:15

1 stop14h 00m

£521

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 5/1

15:10-16:22

2 stops30h 12m

Key West

Wed 28/1

14:25-11:20

2 stops15h 55m

£527

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 6/1

08:55-17:13

1 stop13h 18m

Key West

Sat 24/1

14:45-07:50

1 stop12h 05m

£534

Flights are sorted by cheapest return flights first.

Sorted 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 May, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £527.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £534. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Key West on Thursday is £666.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from London Heathrow Airport to Key West in the morning for as low as £586. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around £835. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 65% 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

Direct flights	None

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

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 12h 55m.
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 November 2025.
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 (47% of total bookings). The next most popular airlines are British Airways (27%) and American Airlines (26%).

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 £460	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £501	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom £528	Free Cancellation	Rating 7.2 11,038 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.