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Cheap flights from Key West to London from $781

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 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 Key West to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:20 pm - 9:05 am
EYW
-
LHR
11h 45m
1 stop
American Airlines Logo
8:15 am - 9:53 pm
LHR
-
EYW
18h 38m
2 stops
$959American Airlines
jeu., mai 7 - mar., mai 12
British Airways Logo
3:58 pm - 10:45 pm
EYW
-
LHR
25h 47m
2 stops
British Airways Logo
6:45 pm - 10:58 pm
LHR
-
EYW
33h 13m
2 stops
$965British Airways
lun., mai 4 - lun., mai 11
KLM Logo
7:33 am - 6:25 am
EYW
-
LHR
17h 52m
1 stop
KLM Logo
8:55 pm - 5:23 pm
LHR
-
EYW
25h 28m
2 stops
$972KLM
lun., mai 4 - lun., mai 11
Multiple Airlines Logo
3:58 pm - 12:35 pm
EYW
-
LHR
15h 37m
1 stop
Multiple Airlines Logo
4:35 pm - 1:27 pm
LHR
-
EYW
25h 52m
1 stop
$995Multiple Airlines
jeu., mai 7 - mar., mai 12
American Airlines Logo
3:58 pm - 11:05 am
EYW
-
LHR
14h 07m
1 stop
American Airlines Logo
9:15 am - 10:36 pm
LHR
-
EYW
18h 21m
1 stop
$1,004American Airlines
sam., mai 9 - mer., mai 20
United Airlines Logo
4:47 pm - 11:35 am
EYW
-
LHR
13h 48m
1 stop
United Airlines Logo
8:00 am - 3:07 pm
LHR
-
EYW
36h 07m
1 stop
$1,011United Airlines
lun., mai 4 - lun., mai 11
Virgin Atlantic Logo
11:48 am - 12:35 pm
EYW
-
LHR
19h 47m
2 stops
Virgin Atlantic Logo
6:15 am - 7:49 pm
LHR
-
EYW
18h 34m
2 stops
$1,027Virgin Atlantic
jeu., mai 21 - jeu., mai 28
Virgin Atlantic Logo
6:19 pm - 1:15 pm
EYW
-
LHR
13h 56m
1 stop
Virgin Atlantic Logo
6:15 am - 7:49 pm
LHR
-
EYW
18h 34m
2 stops
$1,031Virgin Atlantic
jeu., mai 21 - jeu., mai 28
Virgin Atlantic Logo
6:19 pm - 11:20 am
EYW
-
LHR
12h 01m
1 stop
Virgin Atlantic Logo
11:15 am - 7:49 pm
LHR
-
EYW
13h 34m
1 stop
$1,044Virgin Atlantic
jeu., mai 21 - jeu., mai 28
American Airlines Logo
11:24 am - 6:55 am
EYW
-
LHR
14h 31m
1 stop
American Airlines Logo
8:15 am - 6:49 pm
LHR
-
EYW
15h 34m
2 stops
$1,046American Airlines
dim., mai 17 - dim., mai 24

Delta flights from Key West to London Heathrow Airport

Our best Delta deals on Key West to London Heathrow Airport flight tickets
Delta
Jul 13
EYW7:45 amKey West
18h 30m
2 stops
LHR7:15 amLondon Heathrow
Jul 22
LHR4:20 pmLondon Heathrow
26h 09m
2 stops
EYW1:29 pmKey West
$1,133
Delta
Jul 13
EYW7:45 amKey West
18h 25m
2 stops
LHR7:10 amLondon Heathrow
Jul 22
LHR4:20 pmLondon Heathrow
26h 09m
2 stops
EYW1:29 pmKey West
$1,134
Delta
May 26
EYW7:30 amKey West
18h 45m
1 stop
LHR7:15 amLondon Heathrow
Jun 2
LHR6:15 amLondon Heathrow
18h 34m
2 stops
EYW7:49 pmKey West
$1,170

United Airlines flights from Key West to London Heathrow Airport

Our best United Airlines deals on Key West to London Heathrow Airport flight tickets
United Airlines
May 4
EYW4:47 pmKey West
13h 48m
1 stop
LHR11:35 amLondon Heathrow
May 11
LHR8:00 amLondon Heathrow
36h 07m
1 stop
EYW3:07 pmKey West
$1,011
United Airlines
May 17
EYW2:49 pmKey West
34h 41m
2 stops
LHR6:30 amLondon Heathrow
May 24
LHR6:50 amLondon Heathrow
37h 17m
2 stops
EYW3:07 pmKey West
$1,092
United Airlines
Jun 16
EYW2:26 pmKey West
11h 49m
1 stop
LHR7:15 amLondon Heathrow
Jul 17
LHR11:05 amLondon Heathrow
33h 02m
1 stop
EYW3:07 pmKey West
$1,374

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated avril 7, 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

Cheapest round-trip

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 5/7

4:20 pm-9:05 am

1 stop11h 45m

London Heathrow

mar. 5/12

8:15 am-9:53 pm

2 stops18h 38m

$959

Key WestLondon

EYW - LHR

EYWLHR

Key West

lun. 5/4

3:58 pm-10:45 pm

2 stops25h 47m

London Heathrow

lun. 5/11

6:45 pm-10:58 pm

2 stops33h 13m

$965

Key WestLondon

EYW - LHR

EYWLHR

Key West

lun. 5/4

7:33 am-6:25 am

1 stop17h 52m

London Heathrow

lun. 5/11

8:55 pm-5:23 pm

2 stops25h 28m

$972

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 5/7

3:58 pm-12:35 pm

1 stop15h 37m

London Heathrow

mar. 5/12

4:35 pm-1:27 pm

1 stop25h 52m

$995

Key WestLondon

EYW - LHR

EYWLHR

Key West

sam. 5/9

3:58 pm-11:05 am

1 stop14h 07m

London Heathrow

mer. 5/20

9:15 am-10:36 pm

1 stop18h 21m

$1,004

Key WestLondon

EYW - LHR

EYWLHR

Key West

lun. 5/4

4:47 pm-11:35 am

1 stop13h 48m

London Heathrow

lun. 5/11

8:00 am-3:07 pm

1 stop36h 07m

$1,011

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 5/21

11:48 am-12:35 pm

2 stops19h 47m

London Heathrow

jeu. 5/28

6:15 am-7:49 pm

2 stops18h 34m

$1,027

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 5/21

6:19 pm-1:15 pm

1 stop13h 56m

London Heathrow

jeu. 5/28

6:15 am-7:49 pm

2 stops18h 34m

$1,031
Quickest round-trip

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 5/21

6:19 pm-11:20 am

1 stop12h 01m

London Heathrow

jeu. 5/28

11:15 am-7:49 pm

1 stop13h 34m

$1,044

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 5/17

11:24 am-6:55 am

1 stop14h 31m

London Heathrow

dim. 5/24

8:15 am-6:49 pm

2 stops15h 34m

$1,046

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

Can stopping save me money on Key West to London Heathrow Airport flights?

You could potentially save up to 47% on your flight if you consider stops on a Key West to London Heathrow Airport flight.

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 round-trip 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

16h 41m

Direct flights

None
The fastest flight from Key West to London Heathrow Airport takes 16h 41m
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

Frequently asked questions about flying from Key West to London Heathrow Airport

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

    A flight from Key West to London Heathrow will travel around 4541.3 mi. Typically, this will take 16h 41m by plane in normal conditions.

  • 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 are refreshed on a daily basis.

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

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

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Hayes
Slough
Stratford-upon-Avon
Wembley
Crawley
Stansted
Croydon
Dartford
Brentwood
Cobham
Folkestone
Guildford
Romford
Harrow
Watford

Why use momondo?

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

Finding the right flight to London from Key West 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 London quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to London from Key West with this policy.

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

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