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Cheap flights from Key West to London from £308

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to London departing on 28/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
14:46 - 07:50
EYW
-
LHR
12h 04m
1 stop
Delta Logo
06:30 - 19:41
LHR
-
EYW
17h 11m
2 stops
£464Delta
Wed, 4 Mar - Tue, 10 Mar
United Airlines Logo
07:00 - 11:15
EYW
-
LHR
23h 15m
1 stop
United Airlines Logo
13:25 - 16:36
LHR
-
EYW
31h 11m
2 stops
£470United Airlines
Thu, 5 Mar - Mon, 9 Mar
United Airlines Logo
18:28 - 20:35
EYW
-
LHR
21h 07m
2 stops
United Airlines Logo
13:25 - 16:36
LHR
-
EYW
31h 11m
2 stops
£473United Airlines
Thu, 5 Mar - Mon, 9 Mar
United Airlines Logo
18:40 - 06:40
EYW
-
LHR
31h 00m
1 stop
United Airlines Logo
09:00 - 16:36
LHR
-
EYW
35h 36m
3 stops
£474United Airlines
Mon, 2 Mar - Mon, 9 Mar
United Airlines Logo
18:28 - 10:50
EYW
-
LHR
12h 22m
1 stop
United Airlines Logo
18:00 - 16:36
LHR
-
EYW
26h 36m
2 stops
£483United Airlines
Mon, 9 Mar - Tue, 17 Mar
KLM Logo
14:40 - 11:40
EYW
-
LHR
17h 00m
1 stop
KLM Logo
15:50 - 10:48
LHR
-
EYW
22h 58m
1 stop
£485KLM
Tue, 17 Mar - Tue, 24 Mar
Delta Logo
14:46 - 10:40
EYW
-
LHR
14h 54m
2 stops
Delta Logo
10:45 - 19:41
LHR
-
EYW
12h 56m
1 stop
£488Delta
Sat, 7 Mar - Tue, 17 Mar
United Airlines Logo
18:22 - 10:40
EYW
-
LHR
11h 18m
1 stop
United Airlines Logo
17:40 - 16:42
LHR
-
EYW
28h 02m
2 stops
£496United Airlines
Mon, 13 Apr - Fri, 24 Apr
United Airlines Logo
16:38 - 11:35
EYW
-
LHR
13h 57m
1 stop
United Airlines Logo
07:45 - 17:39
LHR
-
EYW
14h 54m
1 stop
£497United Airlines
Wed, 1 Apr - Tue, 7 Apr
Delta Logo
07:30 - 06:25
EYW
-
LHR
18h 55m
1 stop
Delta Logo
06:30 - 17:30
LHR
-
EYW
16h 00m
2 stops
£499Delta
Mon, 23 Mar - Wed, 1 Apr

Delta flights from Key West to London Heathrow Airport

Our best Delta deals on Key West to London Heathrow Airport flight tickets
Delta
4 Mar
EYW14:46Key West
12h 04m
1 stop
LHR07:50London Heathrow
10 Mar
LHR06:30London Heathrow
17h 11m
2 stops
EYW19:41Key West
£464
Delta
7 Mar
EYW14:46Key West
14h 54m
2 stops
LHR10:40London Heathrow
17 Mar
LHR10:45London Heathrow
12h 56m
1 stop
EYW19:41Key West
£488
Delta
23 Mar
EYW07:30Key West
18h 55m
1 stop
LHR06:25London Heathrow
1 Apr
LHR06:30London Heathrow
16h 00m
2 stops
EYW17:30Key West
£499

British Airways flights from Key West to London Heathrow Airport

Our best British Airways deals on Key West to London Heathrow Airport flight tickets
British Airways
21 Apr
EYW15:58Key West
12h 02m
1 stop
LHR09:00London Heathrow
29 Apr
LHR09:15London Heathrow
18h 43m
2 stops
EYW22:58Key West
£491
British Airways
21 Apr
EYW15:58Key West
14h 07m
1 stop
LHR11:05London Heathrow
29 Apr
LHR15:35London Heathrow
12h 23m
1 stop
EYW22:58Key West
£494
British Airways
2 Mar
EYW15:51Key West
36h 24m
2 stops
LHR09:15London Heathrow
8 Mar
LHR10:45London Heathrow
36h 27m
2 stops
EYW19:12Key West
£510

momondo Fare Finder

 
Customise your flight search to find flights from Key West to London Heathrow Airport 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 2 February 2026.
Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 4/3

14:46-07:50

1 stop12h 04m

London Heathrow

Tue 10/3

06:30-19:41

2 stops17h 11m

£464

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 5/3

07:00-11:15

1 stop23h 15m

London Heathrow

Mon 9/3

13:25-16:36

2 stops31h 11m

£470

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 5/3

18:28-20:35

2 stops21h 07m

London Heathrow

Mon 9/3

13:25-16:36

2 stops31h 11m

£473

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 2/3

18:40-06:40

1 stop31h 00m

London Heathrow

Mon 9/3

09:00-16:36

3 stops35h 36m

£474

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 9/3

18:28-10:50

1 stop12h 22m

London Heathrow

Tue 17/3

18:00-16:36

2 stops26h 36m

£483

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 17/3

14:40-11:40

1 stop17h 00m

London Heathrow

Tue 24/3

15:50-10:48

1 stop22h 58m

£485

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sat 7/3

14:46-10:40

2 stops14h 54m

London Heathrow

Tue 17/3

10:45-19:41

1 stop12h 56m

£488

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 13/4

18:22-10:40

1 stop11h 18m

London Heathrow

Fri 24/4

17:40-16:42

2 stops28h 02m

£496

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 1/4

16:38-11:35

1 stop13h 57m

London Heathrow

Tue 7/4

07:45-17:39

1 stop14h 54m

£497

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 23/3

07:30-06:25

1 stop18h 55m

London Heathrow

Wed 1/4

06:30-17:30

2 stops16h 00m

£499

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Key West to London Heathrow Airport

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 airline that flies from Key West to London Heathrow?

Delta and Virgin Atlantic are the most popular carriers operating from Key West to London Heathrow

When to book flights from Key West to London Heathrow Airport

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

Cheap Key West to London Heathrow Airport (EYW to LHR) flight deals and tips

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

Fastest flight time

14h 09m

Direct flights

None
The fastest flight from Key West to London Heathrow Airport takes 14h 09m
There are no direct flights from Key West to London Heathrow Airport. There are no popular flight routes from Key West to London Heathrow Airport.
Search flight deals

  • How far is Key West to London Heathrow by plane?

    The distance between Key West and London Heathrow is about 4541.3 mi. A reasonable flight in good conditions will take 14h 09m.

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

    Prices for flights from Key West Airport to London Heathrow Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Key West Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Stratford-upon-Avon
Swindon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Chelmsford
Hayes
Dover
Swanage
Folkestone

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Key West to London for you.

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

Yes. All flights to London from Key West on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Key West.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Key West and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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