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

United Airlines is the most popular carrier operating from London to Key West

When did momondo last update prices for flights from London to Key West Airport?

Prices for flights from London to Key West Airport are refreshed on a daily basis.

How many operators does momondo search for flights from London to Key West Airport?

The number of operators available for flights from London to Key West Airport is 2 as of October 2026.

How old do you have to be to fly from London to Key West Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The necessary travel and health documents for your Key West Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£370 Cheap Flights from London to Key West in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Key West

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

12:05 - 11:24LHR London Heathrow-EYW Key West

52h 19m2 stops Zurich Chicago O'Hare Intl

16:10 - 06:40EYW Key West-LHR London Heathrow

33h 30m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

£478United Airlines

Wed, 2 Dec - Wed, 9 Dec

12:05 - 11:24LHR London Heathrow-EYW Key West

52h 19m2 stops Zurich Chicago O'Hare Intl

12:05 - 05:55EYW Key West-LHR London Heathrow

12h 50m1 stop Chicago O'Hare Intl

£478United Airlines

Wed, 2 Dec - Wed, 9 Dec

09:10 - 13:52LHR London Heathrow-EYW Key West

33h 42m1 stop Newark

16:10 - 20:35EYW Key West-LHR London Heathrow

23h 25m2 stops Chicago O'Hare Intl Newark

£507United Airlines

Mon, 9 Nov - Wed, 18 Nov

13:35 - 15:29LHR London Heathrow-EYW Key West

30h 54m1 stop Chicago O'Hare Intl

14:51 - 09:10EYW Key West-LHR London Heathrow

13h 19m1 stop Newark

£507United Airlines

Thu, 12 Nov - Wed, 18 Nov

18:00 - 15:29LHR London Heathrow-EYW Key West

26h 29m2 stops Newark Chicago O'Hare Intl

16:10 - 20:35EYW Key West-LHR London Heathrow

23h 25m2 stops Chicago O'Hare Intl Newark

£507United Airlines

Mon, 9 Nov - Wed, 18 Nov

16:40 - 19:20LHR London Heathrow-EYW Key West

31h 40m2 stops Barcelona-El Prat Miami

11:32 - 08:15EYW Key West-LHR London Heathrow

15h 43m1 stop Miami

£645British Airways

Sat, 6 Feb - Wed, 10 Feb

12:45 - 19:02LHR London Heathrow-EYW Key West

35h 17m2 stops Barcelona-El Prat Miami

16:43 - 06:45EYW Key West-LHR London Heathrow

33h 02m1 stop Miami

£646British Airways

Sun, 15 Nov - Sun, 22 Nov

06:05 - 19:08LHR London Heathrow-EYW Key West

17h 03m2 stops Barcelona-El Prat Miami

11:30 - 06:45EYW Key West-LHR London Heathrow

14h 15m1 stop Miami

£652British Airways

Fri, 19 Mar - Tue, 30 Mar

16:40 - 19:20LHR London Heathrow-EYW Key West

31h 40m2 stops Barcelona-El Prat Miami

17:56 - 16:05EYW Key West-LHR London Heathrow

17h 09m2 stops Miami Madrid Barajas

£654British Airways

Sat, 6 Feb - Wed, 10 Feb

16:00 - 17:11LHR London Heathrow-EYW Key West

30h 11m1 stop Atlanta Hartsfield-Jackson

14:35 - 06:25EYW Key West-LHR London Heathrow

10h 50m1 stop Atlanta Hartsfield-Jackson

£680Virgin Atlantic

Sat, 6 Feb - Wed, 10 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

12:05 - 15:29LHR London Heathrow-EYW Key West

31h 24m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

14:51 - 08:05EYW Key West-LHR London Heathrow

36h 14m2 stops Newark Zurich

£506United Airlines

Sun, 25 Oct - Wed, 25 Nov

12:05 - 15:29LHR London Heathrow-EYW Key West

31h 24m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

14:51 - 20:35EYW Key West-LHR London Heathrow

24h 44m1 stop Newark

£508United Airlines

Sun, 25 Oct - Wed, 25 Nov

12:00 - 13:54LHR London Heathrow-EYW Key West

29h 54m1 stop Newark

14:50 - 06:40EYW Key West-LHR London Heathrow

34h 50m2 stops Newark Washington, D.C. Dulles Intl

£710United Airlines

Tue, 27 Oct - Mon, 2 Nov

16:20 - 15:29LHR London Heathrow-EYW Key West

27h 09m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

14:50 - 06:40EYW Key West-LHR London Heathrow

34h 50m2 stops Newark Washington, D.C. Reagan-National

£710United Airlines

Mon, 26 Oct - Sun, 1 Nov

12:05 - 15:29LHR London Heathrow-EYW Key West

31h 24m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

16:10 - 07:55EYW Key West-LHR London Heathrow

34h 45m1 stop Chicago O'Hare Intl

£710United Airlines

Mon, 26 Oct - Mon, 2 Nov

11:15 - 20:01LHR London Heathrow-EYW Key West

13h 46m1 stop Atlanta Hartsfield-Jackson

14:00 - 11:40EYW Key West-LHR London Heathrow

17h 40m1 stop Atlanta Hartsfield-Jackson

£1,040Virgin Atlantic

Sat, 24 Oct - Thu, 29 Oct

11:15 - 20:01LHR London Heathrow-EYW Key West

13h 46m1 stop Atlanta Hartsfield-Jackson

16:00 - 09:00EYW Key West-LHR London Heathrow

13h 00m1 stop Atlanta Hartsfield-Jackson

£1,312Virgin Atlantic

Sat, 24 Oct - Sat, 31 Oct

11:15 - 19:33LHR London Heathrow-EYW Key West

12h 18m1 stop Miami

20:03 - 06:45EYW Key West-LHR London Heathrow

30h 42m1 stop Miami

£1,892British Airways

Mon, 26 Oct - Wed, 28 Oct

09:45 - 19:33LHR London Heathrow-EYW Key West

13h 48m1 stop Miami

20:03 - 11:30EYW Key West-LHR London Heathrow

11h 27m1 stop Miami

£2,570British Airways

Mon, 26 Oct - Tue, 27 Oct

11:15 - 19:33LHR London Heathrow-EYW Key West

12h 18m1 stop Miami

20:03 - 06:45EYW Key West-LHR London Heathrow

30h 42m1 stop Miami

£2,570British Airways

Tue, 27 Oct - Wed, 28 Oct

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United Airlines flights from London to Key West

Our best United Airlines deals on London to Key West flight tickets

United Airlines

2 Dec

LHR12:05London Heathrow

52h 19m

2 stops

EYW11:24Key West

9 Dec

EYW12:05Key West

12h 50m

1 stop

LHR05:55London Heathrow

£478

United Airlines

25 Oct

LHR12:05London Heathrow

31h 24m

2 stops

EYW15:29Key West

25 Nov

EYW14:51Key West

36h 14m

2 stops

LHR08:05London Heathrow

£506

United Airlines

9 Nov

LHR08:00London Heathrow

34h 52m

1 stop

EYW13:52Key West

18 Nov

EYW14:51Key West

24h 44m

1 stop

LHR20:35London Heathrow

£507

American Airlines flights from London to Key West

Our best American Airlines deals on London to Key West flight tickets

American Airlines

10 Nov

LHR16:45London Heathrow

26h 01m

2 stops

EYW13:46Key West

22 Nov

EYW19:57Key West

29h 48m

1 stop

LHR06:45London Heathrow

£620

American Airlines

11 Nov

LHR16:40London Heathrow

22h 08m

2 stops

EYW09:48Key West

17 Nov

EYW13:52Key West

15h 08m

2 stops

LHR10:00London Heathrow

£656

American Airlines

14 Nov

LHR09:55London Heathrow

13h 01m

1 stop

EYW17:56Key West

18 Nov

EYW15:41Key West

12h 59m

1 stop

LHR09:40London Heathrow

£672

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Wed 2/12

12:05-11:24

2 stops52h 19m

Key West

Wed 9/12

16:10-06:40

2 stops33h 30m

£478

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Wed 2/12

12:05-11:24

2 stops52h 19m

Key West

Wed 9/12

12:05-05:55

1 stop12h 50m

£478

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Mon 9/11

09:10-13:52

1 stop33h 42m

Key West

Wed 18/11

16:10-20:35

2 stops23h 25m

£507

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Thu 12/11

13:35-15:29

1 stop30h 54m

Key West

Wed 18/11

14:51-09:10

1 stop13h 19m

£507

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Mon 9/11

18:00-15:29

2 stops26h 29m

Key West

Wed 18/11

16:10-20:35

2 stops23h 25m

£507

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 6/2

16:40-19:20

2 stops31h 40m

Key West

Wed 10/2

11:32-08:15

1 stop15h 43m

£645

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sun 15/11

12:45-19:02

2 stops35h 17m

Key West

Sun 22/11

16:43-06:45

1 stop33h 02m

£646

Fastest return journey

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Fri 19/3

06:05-19:08

2 stops17h 03m

Key West

Tue 30/3

11:30-06:45

1 stop14h 15m

£652

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 6/2

16:40-19:20

2 stops31h 40m

Key West

Wed 10/2

17:56-16:05

2 stops17h 09m

£654

LondonKey West

LHR London Heathrow - EYW Key West

LHREYW

London Heathrow

Sat 6/2

16:00-17:11

1 stop30h 11m

Key West

Wed 10/2

14:35-06:25

1 stop10h 50m

£680

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 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 and Key West?

Prices are currently low for flights on this route.

Typical prices usually range from £599 to £708.
The lowest price recently found on this route was £478.

What is the cheapest month to fly to Key West?

If you aren’t able to travel to Key West during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £566.

When to book flights from London to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from London to Key West according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Key West (LON to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Key West

Best price found	£370
Fastest flight time	28h 29m
Direct flights	None

The best one-way flight to Key West from London in the past 72 hours is £370. The best return flight deal from London to Key West found on momondo in the last 72 hours is £478.

The fastest flight from London to Key West takes 28h 29m

There are no direct flights from London to Key West. There are no popular flight routes from London to Key West.

Search flight deals

Frequently asked questions about flying from London to Key West

How far is London to Key West by plane?
A flight from London to Key West will travel around 4555.0 mi. A reasonable flight in good conditions will take 28h 29m.
When did momondo last update prices for flights from London to Key West Airport?
Prices for flights from London to Key West Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to Key West Airport?
The number of operators available for flights from London to Key West Airport is 2 as of October 2026.
How old do you have to be to fly from London to Key West Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The necessary travel and health documents for your Key West Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London to Key West?
momondo data reveals that the most frequently booked airline on the route from London to Key West is Virgin Atlantic, representing 63% of all bookings. The subsequent popular airline is British Airways at 37%.

Best airlines flying from London to Key West

Compare and see reviews for airlines that fly from London to Key West with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom £441	Free Cancellation	Rating 7.5 697 reviews		Search Virgin Atlantic flights
British Airways	PriceFrom £491	Free Cancellation	Rating 6.7 8,272 reviews		Search British Airways flights

Big Pine Key

Why use momondo?

Why should I use momondo to find a flight deal from London to Key West?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Key West. momondo saves you time and could save you money on your trip.

Can I find flights from London to Key West with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Key West flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Key West?

Once you have performed a search for London to Key West flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Key West right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Key West now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Key West and let you know when they change.