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Cheap flights from Key West to London from £418

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to London departing on 6/8. 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
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Find the cheapest flights from Key West to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:05 - 10:00
EYW
-
LGW
16h 55m
1 stop
Multiple Airlines Logo
14:00 - 11:25
LGW
-
EYW
26h 25m
1 stop
£418Multiple Airlines
Thu, 6 Aug - Sat, 5 Sep
Multiple Airlines Logo
12:05 - 10:00
EYW
-
LGW
16h 55m
1 stop
Multiple Airlines Logo
14:00 - 10:27
LGW
-
EYW
49h 27m
2 stops
£483Multiple Airlines
Thu, 6 Aug - Sat, 5 Sep
American Airlines Logo
13:50 - 09:05
EYW
-
LHR
14h 15m
1 stop
American Airlines Logo
06:15 - 18:31
LHR
-
EYW
17h 16m
2 stops
£702American Airlines
Tue, 18 Aug - Tue, 1 Sep
American Airlines Logo
13:50 - 09:05
EYW
-
LHR
14h 15m
1 stop
American Airlines Logo
06:15 - 18:31
LHR
-
EYW
17h 16m
2 stops
£704American Airlines
Tue, 18 Aug - Tue, 1 Sep
United Airlines Logo
14:20 - 11:55
EYW
-
LHR
16h 35m
2 stops
United Airlines Logo
09:00 - 13:29
LHR
-
EYW
57h 29m
2 stops
£717United Airlines
Tue, 18 Aug - Tue, 1 Sep
Multiple Airlines Logo
13:49 - 06:55
EYW
-
LHR
12h 06m
1 stop
Multiple Airlines Logo
06:15 - 18:31
LHR
-
EYW
17h 16m
2 stops
£720Multiple Airlines
Wed, 19 Aug - Tue, 1 Sep
American Airlines Logo
13:50 - 06:55
EYW
-
LHR
12h 05m
1 stop
American Airlines Logo
09:55 - 18:31
LHR
-
EYW
13h 36m
1 stop
£721American Airlines
Tue, 18 Aug - Tue, 1 Sep
KLM Logo
13:59 - 11:20
EYW
-
LHR
16h 21m
1 stop
KLM Logo
20:55 - 17:20
LHR
-
EYW
25h 25m
2 stops
£726KLM
Mon, 17 Aug - Tue, 1 Sep
United Airlines Logo
14:20 - 10:40
EYW
-
LHR
15h 20m
2 stops
United Airlines Logo
14:10 - 13:29
LHR
-
EYW
28h 19m
2 stops
£726United Airlines
Wed, 19 Aug - Tue, 1 Sep
Delta Logo
18:15 - 13:15
EYW
-
LHR
14h 00m
1 stop
Delta Logo
06:15 - 19:57
LHR
-
EYW
18h 42m
2 stops
£731Delta
Sun, 16 Aug - Tue, 1 Sep

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American Airlines flights from Key West to London

Our best American Airlines deals on Key West to London flight tickets
American Airlines
18 Aug
EYW13:50Key West
14h 15m
1 stop
LHR09:05London Heathrow
1 Sept
LHR06:15London Heathrow
17h 16m
2 stops
EYW18:31Key West
£702
American Airlines
18 Aug
EYW13:50Key West
14h 15m
1 stop
LHR09:05London Heathrow
1 Sept
LHR06:15London Heathrow
17h 16m
2 stops
EYW18:31Key West
£704
American Airlines
18 Aug
EYW13:50Key West
12h 05m
1 stop
LHR06:55London Heathrow
1 Sept
LHR09:55London Heathrow
13h 36m
1 stop
EYW18:31Key West
£721

Delta flights from Key West to London

Our best Delta deals on Key West to London flight tickets
Delta
16 Aug
EYW18:15Key West
14h 00m
1 stop
LHR13:15London Heathrow
1 Sept
LHR06:15London Heathrow
18h 42m
2 stops
EYW19:57Key West
£731
Delta
16 Aug
EYW07:40Key West
20h 35m
2 stops
LHR09:15London Heathrow
1 Sept
LHR06:15London Heathrow
18h 42m
2 stops
EYW19:57Key West
£735
Delta
17 Aug
EYW11:48Key West
18h 32m
1 stop
LHR11:20London Heathrow
1 Sept
LHR11:15London Heathrow
13h 42m
1 stop
EYW19:57Key West
£747

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 21 June 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 - LGW

EYWLGW

Key West

Thu 6/8

12:05-10:00

1 stop16h 55m

London Gatwick

Sat 5/9

14:00-11:25

1 stop26h 25m

£418

Key WestLondon

EYW - LGW

EYWLGW

Key West

Thu 6/8

12:05-10:00

1 stop16h 55m

London Gatwick

Sat 5/9

14:00-10:27

2 stops49h 27m

£483

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

13:50-09:05

1 stop14h 15m

London Heathrow

Tue 1/9

06:15-18:31

2 stops17h 16m

£702

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

13:50-09:05

1 stop14h 15m

London Heathrow

Tue 1/9

06:15-18:31

2 stops17h 16m

£704

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

14:20-11:55

2 stops16h 35m

London Heathrow

Tue 1/9

09:00-13:29

2 stops57h 29m

£717

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 19/8

13:49-06:55

1 stop12h 06m

London Heathrow

Tue 1/9

06:15-18:31

2 stops17h 16m

£720
Fastest return journey

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 18/8

13:50-06:55

1 stop12h 05m

London Heathrow

Tue 1/9

09:55-18:31

1 stop13h 36m

£721

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 17/8

13:59-11:20

1 stop16h 21m

London Heathrow

Tue 1/9

20:55-17:20

2 stops25h 25m

£726

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 19/8

14:20-10:40

2 stops15h 20m

London Heathrow

Tue 1/9

14:10-13:29

2 stops28h 19m

£726

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 16/8

18:15-13:15

1 stop14h 00m

London Heathrow

Tue 1/9

06:15-19:57

2 stops18h 42m

£731

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 01m

Direct flights

None
The fastest flight from Key West to London takes 11h 01m
There are no direct flights from Key West to London. There are no popular flight routes from Key West to London.
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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 01m.

  • 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.

Frequently asked questions about flying from Key West to London

  • How do I get Price Alerts for flights from Key West to London?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Key West from London. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Key West to London with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Milton Keynes
Gatwick
Luton
Slough
Southend-on-Sea
Maidstone
Ipswich
Ilford
Canterbury
Folkestone
Guildford
Hayes
Bedford
Chichester
Dover
Harlow
Chelmsford
Colchester

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