What is the cheapest airline that flies from Key West to London Heathrow?

JetBlue, TAP AIR PORTUGAL, and United Airlines are the most popular carriers operating from Key West to London Heathrow

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.

$324 Cheap Flights from Key West to London Heathrow Airport in 2025/26

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6:08 pm - 11:40 amEYW-LHR

12h 32m1 stop

6:20 am - 7:44 pmLHR-EYW

18h 24m2 stops

$600Multiple Airlines

Find Deal

Sun, Feb 1 - Tue, Feb 10

6:08 pm - 11:40 amEYW-LHR

12h 32m1 stop

8:55 am - 7:44 pmLHR-EYW

15h 49m1 stop

$607KLM

Find Deal

Sun, Feb 1 - Tue, Feb 10

7:45 pm - 12:20 pmEYW-LHR

11h 35m1 stop

10:45 am - 11:56 pmLHR-EYW

18h 11m2 stops

$637British Airways

Find Deal

Sun, Feb 1 - Tue, Feb 10

7:45 pm - 12:20 pmEYW-LHR

11h 35m1 stop

9:45 am - 7:10 pmLHR-EYW

14h 25m1 stop

$657British Airways

Find Deal

Sun, Feb 1 - Tue, Feb 10

1:33 pm - 10:35 amEYW-LHR

16h 02m2 stops

10:45 am - 11:56 pmLHR-EYW

18h 11m2 stops

$660Multiple Airlines

Find Deal

Sun, Feb 1 - Tue, Feb 10

4:10 pm - 11:30 amEYW-LHR

14h 20m1 stop

11:45 am - 9:45 pmLHR-EYW

15h 00m1 stop

$674American Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

7:00 am - 7:50 amEYW-LHR

19h 50m1 stop

11:45 am - 11:03 amLHR-EYW

27h 18m2 stops

$704Delta

Find Deal

Tue, Mar 3 - Sun, Mar 15

2:35 pm - 7:50 amEYW-LHR

12h 15m1 stop

8:55 am - 7:44 pmLHR-EYW

14h 49m1 stop

$705KLM

Find Deal

Tue, Mar 3 - Sun, Mar 15

7:00 am - 10:15 amEYW-LHR

22h 15m2 stops

11:45 am - 11:03 amLHR-EYW

27h 18m2 stops

$708Delta

Find Deal

Tue, Mar 3 - Sun, Mar 15

7:10 am - 7:40 amEYW-LHR

19h 30m2 stops

6:20 am - 7:42 pmLHR-EYW

18h 22m2 stops

$737Delta

Find Deal

Sun, Feb 1 - Tue, Feb 10

KLM flights from Key West to London Heathrow Airport

Our best KLM deals on Key West to London Heathrow Airport flight tickets

KLM

Feb 1

EYW6:08 pmKey West

12h 32m

1 stop

LHR11:40 amLondon Heathrow

Feb 10

LHR8:55 amLondon Heathrow

15h 49m

1 stop

EYW7:44 pmKey West

$607

Find similar

KLM

Mar 3

EYW2:35 pmKey West

12h 15m

1 stop

LHR7:50 amLondon Heathrow

Mar 15

LHR8:55 amLondon Heathrow

14h 49m

1 stop

EYW7:44 pmKey West

$705

Find similar

Delta flights from Key West to London Heathrow Airport

Our best Delta deals on Key West to London Heathrow Airport flight tickets

Delta

Mar 3

EYW7:00 amKey West

19h 50m

1 stop

LHR7:50 amLondon Heathrow

Mar 15

LHR11:45 amLondon Heathrow

27h 18m

2 stops

EYW11:03 amKey West

$704

Find similar

Delta

Mar 3

EYW7:00 amKey West

22h 15m

2 stops

LHR10:15 amLondon Heathrow

Mar 15

LHR11:45 amLondon Heathrow

27h 18m

2 stops

EYW11:03 amKey West

$708

Find similar

Delta

Feb 1

EYW7:10 amKey West

19h 30m

2 stops

LHR7:40 amLondon Heathrow

Feb 10

LHR6:20 amLondon Heathrow

18h 22m

2 stops

EYW7:42 pmKey West

$737

Find similar

momondo Fare Finder

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

Sun 2/1

6:08 pm-11:40 am

1 stop12h 32m

London Heathrow

Tue 2/10

6:20 am-7:44 pm

2 stops18h 24m

$600

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

6:08 pm-11:40 am

1 stop12h 32m

London Heathrow

Tue 2/10

8:55 am-7:44 pm

1 stop15h 49m

$607

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

7:45 pm-12:20 pm

1 stop11h 35m

London Heathrow

Tue 2/10

10:45 am-11:56 pm

2 stops18h 11m

$637

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

7:45 pm-12:20 pm

1 stop11h 35m

London Heathrow

Tue 2/10

9:45 am-7:10 pm

1 stop14h 25m

$657

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

1:33 pm-10:35 am

2 stops16h 02m

London Heathrow

Tue 2/10

10:45 am-11:56 pm

2 stops18h 11m

$660

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 12/7

4:10 pm-11:30 am

1 stop14h 20m

London Heathrow

Sun 12/14

11:45 am-9:45 pm

1 stop15h 00m

$674

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/3

7:00 am-7:50 am

1 stop19h 50m

London Heathrow

Sun 3/15

11:45 am-11:03 am

2 stops27h 18m

$704

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/3

2:35 pm-7:50 am

1 stop12h 15m

London Heathrow

Sun 3/15

8:55 am-7:44 pm

1 stop14h 49m

$705

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 3/3

7:00 am-10:15 am

2 stops22h 15m

London Heathrow

Sun 3/15

11:45 am-11:03 am

2 stops27h 18m

$708

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

7:10 am-7:40 am

2 stops19h 30m

London Heathrow

Tue 2/10

6:20 am-7:42 pm

2 stops18h 22m

$737

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

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

Prices

Airlines

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

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $691. The most expensive day to fly to London Heathrow Airport is Tuesday, with ticket prices averaging around $2,031.

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 $789. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $2,031.

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

Direct flights	None

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?
A flight from Key West to London Heathrow will travel around 4541.3 mi. Typically, this will take 11h 35m 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.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Stratford-upon-Avon

Brentwood

Salisbury

Chelmsford

Folkestone

Romford

Ilford

Swindon

Cobham

Wembley

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Key West to London from $324

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 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Key West to London

Cheap round-trip flights

Cheap one-way flights

KLM flights from Key West to London Heathrow Airport

Our best KLM deals on Key West to London Heathrow Airport flight tickets

Delta flights from Key West to London Heathrow Airport

Our best Delta deals on Key West to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

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?

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $691. The most expensive day to fly to London Heathrow Airport is Tuesday, with ticket prices averaging around $2,031.

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

What is the cheapest airline that flies from Key West to London Heathrow?

JetBlue, TAP AIR PORTUGAL, and United Airlines are the most popular carriers operating from Key West to London Heathrow

When to book flights from Key West to London Heathrow Airport

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

Direct flights

How far is Key West to London Heathrow by plane?

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

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

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

Traveling to a place near London?

Why use momondo?

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

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

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

I’m not ready to book a flight from Key West to London right now. Can momondo alert me if prices change?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo