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Cheap flights from Key West to London from £210

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 27/1. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Key West to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
18:19 - 13:15EYW  Key West-LHR London Heathrow
13h 56m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
20:55 - 17:23LHR  London Heathrow-EYW Key West
25h 28m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
£640Multiple Airlines
Tue, 22 Sep - Wed, 30 Sep
Delta Logo
07:40 - 07:10EYW  Key West-LHR London Heathrow
18h 30m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County
Delta Logo
06:30 - 20:01LHR  London Heathrow-EYW Key West
18h 31m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
£643Delta
Tue, 29 Sep - Tue, 6 Oct
United Airlines Logo
12:41 - 07:55EYW  Key West-LHR London Heathrow
14h 14m1 stop Chicago O'Hare Intl
United Airlines Logo
18:00 - 11:11LHR  London Heathrow-EYW Key West
46h 11m2 stops Toronto Pearson Intl Chicago O'Hare Intl
£652United Airlines
Sun, 6 Dec - Wed, 9 Dec
Multiple Airlines Logo
07:40 - 06:25EYW  Key West-LHR London Heathrow
17h 45m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
11:15 - 20:00LHR  London Heathrow-EYW Key West
13h 45m1 stop Atlanta Hartsfield-Jackson
£661Multiple Airlines
Tue, 22 Sep - Wed, 30 Sep
United Airlines Logo
14:00 - 07:55EYW  Key West-LHR London Heathrow
12h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
13:00 - 15:06LHR  London Heathrow-EYW Key West
31h 06m3 stops Montreal Pierre Elliott Trudeau Intl New York LaGuardia Chicago O'Hare Intl
£666United Airlines
Sun, 6 Dec - Wed, 9 Dec
United Airlines Logo
12:41 - 07:55EYW  Key West-LHR London Heathrow
14h 14m1 stop Chicago O'Hare Intl
United Airlines Logo
10:25 - 13:11LHR  London Heathrow-EYW Key West
31h 46m1 stop Chicago O'Hare Intl
£668United Airlines
Sun, 6 Dec - Wed, 9 Dec
British Airways Logo
13:47 - 22:15EYW  Key West-LHR London Heathrow
27h 28m2 stops Miami Madrid Barajas
British Airways Logo
06:30 - 19:17LHR  London Heathrow-EYW Key West
17h 47m2 stops Barcelona-El Prat Miami
£672British Airways
Tue, 22 Sep - Wed, 30 Sep
Air France Logo
18:19 - 13:15EYW  Key West-LHR London Heathrow
13h 56m1 stop Atlanta Hartsfield-Jackson
Air France Logo
06:15 - 20:00LHR  London Heathrow-EYW Key West
18h 45m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
£682Air France
Fri, 25 Sep - Fri, 2 Oct
Multiple Airlines Logo
10:59 - 10:00EYW  Key West-LGW London Gatwick
18h 01m1 stop Orlando
Multiple Airlines Logo
14:00 - 10:35LGW  London Gatwick-EYW Key West
49h 35m2 stops Orlando Indianapolis
£696Multiple Airlines
Fri, 25 Sep - Fri, 2 Oct
Air France Logo
18:19 - 13:15EYW  Key West-LHR London Heathrow
13h 56m1 stop Atlanta Hartsfield-Jackson
Air France Logo
09:20 - 17:23LHR  London Heathrow-EYW Key West
13h 03m1 stop Atlanta Hartsfield-Jackson
£699Air France
Fri, 25 Sep - Fri, 2 Oct

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United Airlines flights from Key West to London

Our best United Airlines deals on Key West to London flight tickets
United Airlines
6 Dec
EYW12:41Key West
14h 14m
1 stop
LHR07:55London Heathrow
9 Dec
LHR18:00London Heathrow
46h 11m
2 stops
EYW11:11Key West
£652
United Airlines
6 Dec
EYW14:00Key West
12h 55m
1 stop
LHR07:55London Heathrow
9 Dec
LHR13:00London Heathrow
31h 06m
3 stops
EYW15:06Key West
£666
United Airlines
6 Dec
EYW12:41Key West
14h 14m
1 stop
LHR07:55London Heathrow
9 Dec
LHR10:25London Heathrow
31h 46m
1 stop
EYW13:11Key West
£668

Delta flights from Key West to London

Our best Delta deals on Key West to London flight tickets
Delta
29 Sept
EYW07:40Key West
18h 30m
2 stops
LHR07:10London Heathrow
6 Oct
LHR06:30London Heathrow
18h 31m
2 stops
EYW20:01Key West
£643
Delta
7 Sept
EYW18:15Key West
14h 00m
1 stop
LHR13:15London Heathrow
14 Sept
LHR09:20London Heathrow
15h 40m
1 stop
EYW20:00Key West
£822
Delta
3 Sept
EYW13:59Key West
12h 16m
1 stop
LHR07:15London Heathrow
7 Sept
LHR11:15London Heathrow
13h 42m
1 stop
EYW19:57Key West
£926

momondo Fare Finder

 
Customise your flight search to find flights from Key West to London 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 15 August 2026.
Use the filters below to find and compare flights from Key West to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Tue 22/9

18:19-13:15

1 stop13h 56m

London Heathrow

Wed 30/9

20:55-17:23

2 stops25h 28m

£640

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Tue 29/9

07:40-07:10

2 stops18h 30m

London Heathrow

Tue 6/10

06:30-20:01

2 stops18h 31m

£643

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sun 6/12

12:41-07:55

1 stop14h 14m

London Heathrow

Wed 9/12

18:00-11:11

2 stops46h 11m

£652

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Tue 22/9

07:40-06:25

1 stop17h 45m

London Heathrow

Wed 30/9

11:15-20:00

1 stop13h 45m

£661

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sun 6/12

14:00-07:55

1 stop12h 55m

London Heathrow

Wed 9/12

13:00-15:06

3 stops31h 06m

£666

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sun 6/12

12:41-07:55

1 stop14h 14m

London Heathrow

Wed 9/12

10:25-13:11

1 stop31h 46m

£668

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Tue 22/9

13:47-22:15

2 stops27h 28m

London Heathrow

Wed 30/9

06:30-19:17

2 stops17h 47m

£672

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Fri 25/9

18:19-13:15

1 stop13h 56m

London Heathrow

Fri 2/10

06:15-20:00

2 stops18h 45m

£682

Key WestLondon

EYW Key West - LGW London Gatwick

EYWLGW

Key West

Fri 25/9

10:59-10:00

1 stop18h 01m

London Gatwick

Fri 2/10

14:00-10:35

2 stops49h 35m

£696
Fastest return journey

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Fri 25/9

18:19-13:15

1 stop13h 56m

London Heathrow

Fri 2/10

09:20-17:23

1 stop13h 03m

£699

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to London from

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

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?

British Airways, Virgin Atlantic, and Delta are the most popular carriers operating from Key West to London

When to book flights from Key West to London

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

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

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

Fastest flight time

11h 25m

Direct flights

None
The fastest flight from Key West to London takes 11h 25m
There are no direct flights from Key West to London. There are no popular flight routes from Key West to London.
Search flight deals

Frequently asked questions about flying from Key West to London

  • How far is Key West to London by plane?

    A flight from Key West to London will travel around 4555.0 mi. By plane, this route typically takes 11h 25m.

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

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

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

    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 Key West Airport to London.

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

    The necessary travel and health documents for your London 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
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Ipswich
Maidstone
Folkestone
Ilford
Hastings
Canterbury
Chichester
Hayes
Guildford
Bedford
Harlow
Colchester
Chelmsford

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Key West to London . Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Key West to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Key West to London 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 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.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport