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Cheap flights from London Heathrow Airport to Key West from £438

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Key West departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Key West

Cheap return flights

British Airways Logo
06:15 - 18:37LHR-EYW
17h 22m2 stops
British Airways Logo
15:59 - 12:05EYW-LHR
16h 06m1 stop
£453British Airways
Find Deal
Thu, 19 Feb - Mon, 16 Mar
Virgin Atlantic Logo
11:45 - 17:13LHR-EYW
58h 28m2 stops
Virgin Atlantic Logo
14:35 - 07:50EYW-LHR
37h 15m2 stops
£455Virgin Atlantic
Find Deal
Thu, 19 Feb - Mon, 16 Mar
Virgin Atlantic Logo
15:15 - 20:07LHR-EYW
33h 52m1 stop
Virgin Atlantic Logo
13:57 - 05:50EYW-LHR
34h 53m2 stops
£461Virgin Atlantic
Find Deal
Fri, 3 Oct - Mon, 6 Oct
American Airlines Logo
06:00 - 23:59LHR-EYW
22h 59m2 stops
American Airlines Logo
15:59 - 08:15EYW-LHR
12h 16m1 stop
£471American Airlines
Find Deal
Tue, 17 Feb - Sat, 14 Mar
British Airways Logo
06:05 - 18:37LHR-EYW
17h 32m2 stops
British Airways Logo
20:01 - 06:50EYW-LHR
30h 49m1 stop
£473British Airways
Find Deal
Mon, 16 Feb - Thu, 19 Mar
Delta Logo
06:30 - 19:44LHR-EYW
18h 14m2 stops
Delta Logo
18:00 - 09:00EYW-LHR
11h 00m1 stop
£481Delta
Find Deal
Wed, 18 Feb - Tue, 17 Mar
Delta Logo
06:20 - 19:44LHR-EYW
18h 24m2 stops
Delta Logo
14:35 - 10:50EYW-LHR
16h 15m2 stops
£486Delta
Find Deal
Tue, 17 Feb - Tue, 17 Mar
American Airlines Logo
14:30 - 23:59LHR-EYW
13h 29m1 stop
American Airlines Logo
17:24 - 12:00EYW-LHR
14h 36m1 stop
£511American Airlines
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Air France Logo
06:20 - 19:44LHR-EYW
17h 24m2 stops
Air France Logo
18:00 - 13:45EYW-LHR
15h 45m2 stops
£536Air France
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Air France Logo
06:20 - 19:44LHR-EYW
17h 24m2 stops
Air France Logo
18:00 - 13:45EYW-LHR
15h 45m2 stops
£583Air France
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Thu, 12 Mar - Mon, 16 Mar

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
19 Feb
LHR06:15London Heathrow
17h 22m
2 stops
EYW18:37Key West
16 Mar
EYW15:59Key West
16h 06m
1 stop
LHR12:05London Heathrow
£453
Find similar
British Airways
16 Feb
LHR06:05London Heathrow
17h 32m
2 stops
EYW18:37Key West
19 Mar
EYW20:01Key West
30h 49m
1 stop
LHR06:50London Heathrow
£473
Find similar
British Airways
19 Feb
LHR11:25London Heathrow
36h 12m
2 stops
EYW18:37Key West
19 Mar
EYW15:59Key West
16h 06m
1 stop
LHR12:05London Heathrow
£474
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
19 Feb
LHR11:45London Heathrow
58h 28m
2 stops
EYW17:13Key West
16 Mar
EYW14:35Key West
37h 15m
2 stops
LHR07:50London Heathrow
£455
Find similar
Virgin Atlantic
3 Oct
LHR15:15London Heathrow
33h 52m
1 stop
EYW20:07Key West
6 Oct
EYW13:57Key West
34h 53m
2 stops
LHR05:50London Heathrow
£461
Find similar
Virgin Atlantic
19 Feb
LHR15:50London Heathrow
30h 23m
1 stop
EYW17:13Key West
16 Mar
EYW18:00Key West
11h 00m
1 stop
LHR09:00London Heathrow
£468
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 16 September 2025.
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

Thu 19/2

06:15-18:37

2 stops17h 22m

Key West

Mon 16/3

15:59-12:05

1 stop16h 06m

£453

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 19/2

11:45-17:13

2 stops58h 28m

Key West

Mon 16/3

14:35-07:50

2 stops37h 15m

£455

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Fri 3/10

15:15-20:07

1 stop33h 52m

Key West

Mon 6/10

13:57-05:50

2 stops34h 53m

£461

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 17/2

06:00-23:59

2 stops22h 59m

Key West

Sat 14/3

15:59-08:15

1 stop12h 16m

£471

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Mon 16/2

06:05-18:37

2 stops17h 32m

Key West

Thu 19/3

20:01-06:50

1 stop30h 49m

£473

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 18/2

06:30-19:44

2 stops18h 14m

Key West

Tue 17/3

18:00-09:00

1 stop11h 00m

£481

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 17/2

06:20-19:44

2 stops18h 24m

Key West

Tue 17/3

14:35-10:50

2 stops16h 15m

£486

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

14:30-23:59

1 stop13h 29m

Key West

Mon 16/3

17:24-12:00

1 stop14h 36m

£511

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

06:20-19:44

2 stops17h 24m

Key West

Mon 16/3

18:00-13:45

2 stops15h 45m

£536

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

06:20-19:44

2 stops17h 24m

Key West

Mon 16/3

18:00-13:45

2 stops15h 45m

£583

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Key West from

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

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 £500.

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 £516. 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 £644.

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 £567. 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 £807. 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 43% 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 13h 29m.

  • 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?

  • 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?

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 AtlanticPriceFrom £441Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £444Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
American AirlinesPriceFrom £510Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
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.

An easier way to manage your Key West trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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