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Cheap flights from Key West to London from $772

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.
1 adult
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.
Delta Logo
7:40 am - 6:25 am
EYW
-
LHR
17h 45m
1 stop
Delta Logo
6:30 am - 7:45 pm
LHR
-
EYW
18h 15m
2 stops
$867Delta
Tue, Aug 18 - Tue, Sep 1
Delta Logo
7:40 am - 10:20 am
EYW
-
LHR
21h 40m
2 stops
Delta Logo
6:30 am - 7:45 pm
LHR
-
EYW
18h 15m
2 stops
$872Delta
Tue, Aug 18 - Tue, Sep 1
British Airways Logo
12:00 pm - 12:05 pm
EYW
-
LHR
19h 05m
1 stop
British Airways Logo
7:35 am - 7:29 pm
LHR
-
EYW
16h 54m
2 stops
$884British Airways
Thu, Nov 5 - Wed, Nov 11
British Airways Logo
8:00 pm - 4:05 pm
EYW
-
LHR
15h 05m
2 stops
British Airways Logo
7:35 am - 7:29 pm
LHR
-
EYW
16h 54m
2 stops
$892British Airways
Thu, Nov 5 - Wed, Nov 11
KLM Logo
7:40 am - 6:25 am
EYW
-
LHR
17h 45m
1 stop
KLM Logo
9:20 am - 7:45 pm
LHR
-
EYW
15h 25m
1 stop
$896KLM
Tue, Aug 18 - Tue, Sep 1
United Airlines Logo
2:30 pm - 9:10 am
EYW
-
LHR
13h 40m
1 stop
United Airlines Logo
6:00 pm - 3:06 pm
LHR
-
EYW
26h 06m
2 stops
$900United Airlines
Wed, Nov 11 - Fri, Nov 13
United Airlines Logo
2:30 pm - 10:25 am
EYW
-
LHR
14h 55m
1 stop
United Airlines Logo
1:35 pm - 3:06 pm
LHR
-
EYW
30h 31m
1 stop
$901United Airlines
Wed, Nov 11 - Fri, Nov 13
United Airlines Logo
2:30 pm - 8:25 am
EYW
-
LHR
12h 55m
1 stop
United Airlines Logo
4:00 pm - 1:02 pm
LHR
-
EYW
26h 02m
1 stop
$902United Airlines
Wed, Nov 11 - Fri, Nov 13
United Airlines Logo
2:30 pm - 10:25 am
EYW
-
LHR
14h 55m
1 stop
United Airlines Logo
6:00 pm - 1:02 pm
LHR
-
EYW
24h 02m
1 stop
$903United Airlines
Wed, Nov 11 - Fri, Nov 13
British Airways Logo
1:45 pm - 11:30 am
EYW
-
LHR
16h 45m
1 stop
British Airways Logo
9:45 am - 7:29 pm
LHR
-
EYW
14h 44m
1 stop
$910British Airways
Thu, Nov 5 - Wed, Nov 11

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
Nov 11
EYW2:30 pmKey West
13h 40m
1 stop
LHR9:10 amLondon Heathrow
Nov 13
LHR6:00 pmLondon Heathrow
26h 06m
2 stops
EYW3:06 pmKey West
$900
United Airlines
Nov 11
EYW2:30 pmKey West
14h 55m
1 stop
LHR10:25 amLondon Heathrow
Nov 13
LHR1:35 pmLondon Heathrow
30h 31m
1 stop
EYW3:06 pmKey West
$901
United Airlines
Nov 11
EYW2:30 pmKey West
12h 55m
1 stop
LHR8:25 amLondon Heathrow
Nov 13
LHR4:00 pmLondon Heathrow
26h 02m
1 stop
EYW1:02 pmKey West
$902

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
Nov 5
EYW12:00 pmKey West
19h 05m
1 stop
LHR12:05 pmLondon Heathrow
Nov 11
LHR7:35 amLondon Heathrow
16h 54m
2 stops
EYW7:29 pmKey West
$884
British Airways
Nov 5
EYW8:00 pmKey West
15h 05m
2 stops
LHR4:05 pmLondon Heathrow
Nov 11
LHR7:35 amLondon Heathrow
16h 54m
2 stops
EYW7:29 pmKey West
$892
British Airways
Nov 5
EYW1:45 pmKey West
16h 45m
1 stop
LHR11:30 amLondon Heathrow
Nov 11
LHR9:45 amLondon Heathrow
14h 44m
1 stop
EYW7:29 pmKey West
$910

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 May 24, 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

Tue 8/18

7:40 am-6:25 am

1 stop17h 45m

London Heathrow

Tue 9/1

6:30 am-7:45 pm

2 stops18h 15m

$867

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 8/18

7:40 am-10:20 am

2 stops21h 40m

London Heathrow

Tue 9/1

6:30 am-7:45 pm

2 stops18h 15m

$872

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 11/5

12:00 pm-12:05 pm

1 stop19h 05m

London Heathrow

Wed 11/11

7:35 am-7:29 pm

2 stops16h 54m

$884

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 11/5

8:00 pm-4:05 pm

2 stops15h 05m

London Heathrow

Wed 11/11

7:35 am-7:29 pm

2 stops16h 54m

$892

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 8/18

7:40 am-6:25 am

1 stop17h 45m

London Heathrow

Tue 9/1

9:20 am-7:45 pm

1 stop15h 25m

$896

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 11/11

2:30 pm-9:10 am

1 stop13h 40m

London Heathrow

Fri 11/13

6:00 pm-3:06 pm

2 stops26h 06m

$900

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 11/11

2:30 pm-10:25 am

1 stop14h 55m

London Heathrow

Fri 11/13

1:35 pm-3:06 pm

1 stop30h 31m

$901

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 11/11

2:30 pm-8:25 am

1 stop12h 55m

London Heathrow

Fri 11/13

4:00 pm-1:02 pm

1 stop26h 02m

$902

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 11/11

2:30 pm-10:25 am

1 stop14h 55m

London Heathrow

Fri 11/13

6:00 pm-1:02 pm

1 stop24h 02m

$903
Quickest round-trip

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 11/5

1:45 pm-11:30 am

1 stop16h 45m

London Heathrow

Wed 11/11

9:45 am-7:29 pm

1 stop14h 44m

$910

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

11h 28m

Direct flights

None
The fastest flight from Key West to London Heathrow Airport takes 11h 28m
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.
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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 11h 28m 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
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Wembley
Stratford-upon-Avon
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Ilford
Cobham
Folkestone
Uxbridge

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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