Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Key West to London from £470

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 20/2. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Key West to London

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
18:40 - 10:50
EYW
-
LHR
11h 10m1 stop
United Airlines Logo
06:50 - 22:09
LHR
-
EYW
20h 19m2 stops
£470United Airlines
ven., 20 févr. - dim., 1 mars
KLM Logo
18:06 - 11:40
EYW
-
LHR
12h 34m1 stop
KLM Logo
06:30 - 19:40
LHR
-
EYW
18h 10m2 stops
£471KLM
dim., 25 janv. - dim., 1 févr.
British Airways Logo
19:45 - 08:35
EYW
-
LHR
31h 50m1 stop
British Airways Logo
06:00 - 23:56
LHR
-
EYW
22h 56m2 stops
£473British Airways
dim., 1 févr. - mar., 10 févr.
Delta Logo
18:25 - 11:40
EYW
-
LHR
13h 15m1 stop
Delta Logo
06:20 - 19:41
LHR
-
EYW
17h 21m2 stops
£476Delta
lun., 9 mars - mer., 18 mars
Delta Logo
11:59 - 10:45
EYW
-
LHR
17h 46m2 stops
Delta Logo
06:30 - 19:42
LHR
-
EYW
18h 12m2 stops
£478Delta
jeu., 19 févr. - lun., 2 mars
Multiple Airlines Logo
13:36 - 06:50
EYW
-
LHR
12h 14m1 stop
Multiple Airlines Logo
06:05 - 18:52
LHR
-
EYW
17h 47m2 stops
£484Multiple Airlines
jeu., 19 févr. - sam., 28 févr.
British Airways Logo
16:37 - 11:35
EYW
-
LHR
37h 58m2 stops
British Airways Logo
17:05 - 23:56
LHR
-
EYW
35h 51m2 stops
£485British Airways
dim., 25 janv. - dim., 1 févr.
KLM Logo
18:06 - 11:40
EYW
-
LHR
12h 34m1 stop
KLM Logo
08:55 - 19:40
LHR
-
EYW
15h 45m1 stop
£491KLM
dim., 25 janv. - dim., 1 févr.
British Airways Logo
19:45 - 08:35
EYW
-
LHR
31h 50m1 stop
British Airways Logo
09:45 - 19:10
LHR
-
EYW
14h 25m1 stop
£493British Airways
dim., 1 févr. - mar., 10 févr.
Delta Logo
07:10 - 06:20
EYW
-
LHR
18h 10m2 stops
Delta Logo
15:50 - 10:57
LHR
-
EYW
23h 07m1 stop
£494Delta
ven., 6 mars - sam., 14 mars

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
30 Jan
EYW13:33Key West
13h 42m
1 stop
LHR08:15London Heathrow
6 Feb
LHR06:05London Heathrow
18h 05m
2 stops
EYW19:10Key West
£469
Find similar
British Airways
1 Feb
EYW19:45Key West
31h 50m
1 stop
LHR08:35London Heathrow
10 Feb
LHR06:00London Heathrow
22h 56m
2 stops
EYW23:56Key West
£473
Find similar
British Airways
25 Jan
EYW16:37Key West
37h 58m
2 stops
LHR11:35London Heathrow
1 Feb
LHR17:05London Heathrow
35h 51m
2 stops
EYW23:56Key West
£484
Find similar

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
20 Feb
EYW18:40Key West
11h 10m
1 stop
LHR10:50London Heathrow
1 Mar
LHR06:50London Heathrow
20h 19m
2 stops
EYW22:09Key West
£470
Find similar
United Airlines
30 Jan
EYW14:25Key West
13h 00m
1 stop
LHR08:25London Heathrow
3 Feb
LHR12:05London Heathrow
33h 17m
1 stop
EYW16:22Key West
£495
Find similar
United Airlines
30 Jan
EYW14:25Key West
13h 45m
1 stop
LHR09:10London Heathrow
3 Feb
LHR13:25London Heathrow
30h 52m
2 stops
EYW15:17Key West
£497
Find similar

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 16 décembre 2025.
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

ven. 20/2

18:40-10:50

1 stop11h 10m

London Heathrow

dim. 1/3

06:50-22:09

2 stops20h 19m

£470

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 25/1

18:06-11:40

1 stop12h 34m

London Heathrow

dim. 1/2

06:30-19:40

2 stops18h 10m

£471

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 1/2

19:45-08:35

1 stop31h 50m

London Heathrow

mar. 10/2

06:00-23:56

2 stops22h 56m

£473

Key WestLondon

EYW - LHR

EYWLHR

Key West

lun. 9/3

18:25-11:40

1 stop13h 15m

London Heathrow

mer. 18/3

06:20-19:41

2 stops17h 21m

£476

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 19/2

11:59-10:45

2 stops17h 46m

London Heathrow

lun. 2/3

06:30-19:42

2 stops18h 12m

£478

Key WestLondon

EYW - LHR

EYWLHR

Key West

jeu. 19/2

13:36-06:50

1 stop12h 14m

London Heathrow

sam. 28/2

06:05-18:52

2 stops17h 47m

£484

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 25/1

16:37-11:35

2 stops37h 58m

London Heathrow

dim. 1/2

17:05-23:56

2 stops35h 51m

£484

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 25/1

18:06-11:40

1 stop12h 34m

London Heathrow

dim. 1/2

08:55-19:40

1 stop15h 45m

£491

Key WestLondon

EYW - LHR

EYWLHR

Key West

dim. 1/2

19:45-08:35

1 stop31h 50m

London Heathrow

mar. 10/2

09:45-19:10

1 stop14h 25m

£493

Key WestLondon

EYW - LHR

EYWLHR

Key West

ven. 6/3

07:10-06:20

2 stops18h 10m

London Heathrow

sam. 14/3

15:50-10:57

1 stop23h 07m

£494

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Key West is on a Saturday. momondo users have found tickets for Saturday departures for as low as £595. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Tuesday is £1,177.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Key West to London Heathrow Airport in the afternoon for as low as £714. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £1,177 on average. Flights to London Heathrow Airport from Key West at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

11h 10m

Direct flights

None
The fastest flight from Key West to London Heathrow Airport takes 11h 10m
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 11h 10m.

  • 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
Swindon
Stratford-upon-Avon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Swanage
Hayes
Chelmsford
Dover
Worthing

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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
jeu. 15/1
jeu. 22/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London