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.

£654 Cheap Flights from Key West to London Heathrow Airport in 2026

Find the cheapest flights from Key West to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

18:20 - 10:50EYW Key West-LHR London Heathrow

11h 30m1 stop Washington, D.C. Dulles Intl

18:00 - 11:11LHR London Heathrow-EYW Key West

46h 11m2 stops Toronto Pearson Intl Chicago O'Hare Intl

£654United Airlines

Wed, 20 Jan - Fri, 22 Jan

12:41 - 12:00EYW Key West-LHR London Heathrow

18h 19m1 stop Chicago O'Hare Intl

15:00 - 16:22LHR London Heathrow-EYW Key West

30h 22m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

£655United Airlines

Wed, 20 Jan - Fri, 22 Jan

12:41 - 09:10EYW Key West-LHR London Heathrow

15h 29m2 stops Chicago O'Hare Intl Newark

11:10 - 16:22LHR London Heathrow-EYW Key West

34h 12m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

£658United Airlines

Wed, 20 Jan - Fri, 22 Jan

12:41 - 09:10EYW Key West-LHR London Heathrow

15h 29m2 stops Chicago O'Hare Intl Newark

11:10 - 16:22LHR London Heathrow-EYW Key West

34h 12m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

£659United Airlines

Wed, 20 Jan - Fri, 22 Jan

14:30 - 08:25EYW Key West-LHR London Heathrow

12h 55m1 stop Newark

12:00 - 13:02LHR London Heathrow-EYW Key West

30h 02m1 stop Newark

£669United Airlines

Wed, 20 Jan - Fri, 22 Jan

18:20 - 10:50EYW Key West-LHR London Heathrow

11h 30m1 stop Washington, D.C. Dulles Intl

16:20 - 16:22LHR London Heathrow-EYW Key West

29h 02m1 stop Washington, D.C. Dulles Intl

£670United Airlines

Wed, 20 Jan - Fri, 22 Jan

12:00 - 08:15EYW Key West-LHR London Heathrow

15h 15m1 stop Miami

14:30 - 23:56LHR London Heathrow-EYW Key West

14h 26m1 stop Miami

£827British Airways

Wed, 20 Jan - Fri, 22 Jan

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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 Jan

EYW18:20Key West

11h 30m

1 stop

LHR10:50London Heathrow

22 Jan

LHR18:00London Heathrow

46h 11m

2 stops

EYW11:11Key West

£654

United Airlines

20 Jan

EYW12:41Key West

18h 19m

1 stop

LHR12:00London Heathrow

22 Jan

LHR15:00London Heathrow

30h 22m

2 stops

EYW16:22Key West

£655

United Airlines

20 Jan

EYW12:41Key West

15h 29m

2 stops

LHR09:10London Heathrow

22 Jan

LHR11:10London Heathrow

34h 12m

2 stops

EYW16:22Key West

£658

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

Cheapest return flight

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

18:20-10:50

1 stop11h 30m

London Heathrow

Fri 22/1

18:00-11:11

2 stops46h 11m

£654

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

12:41-12:00

1 stop18h 19m

London Heathrow

Fri 22/1

15:00-16:22

2 stops30h 22m

£655

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

12:41-09:10

2 stops15h 29m

London Heathrow

Fri 22/1

11:10-16:22

2 stops34h 12m

£658

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

12:41-09:10

2 stops15h 29m

London Heathrow

Fri 22/1

11:10-16:22

2 stops34h 12m

£659

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

14:30-08:25

1 stop12h 55m

London Heathrow

Fri 22/1

12:00-13:02

1 stop30h 02m

£669

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

18:20-10:50

1 stop11h 30m

London Heathrow

Fri 22/1

16:20-16:22

1 stop29h 02m

£670

Fastest return journey

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Wed 20/1

12:00-08:15

1 stop15h 15m

London Heathrow

Fri 22/1

14:30-23:56

1 stop14h 26m

£827

Cheapest one-way

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Thu 14/1

13:00-21:35

2 stops27h 35m

£1,648

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Thu 14/1

12:00-06:45

1 stop13h 45m

£2,087

Fastest single journey

Key WestLondon

EYW Key West - LHR London Heathrow

EYWLHR

Key West

Sat 24/10

14:15-07:20

1 stop12h 05m

£2,812

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 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

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

TAP AIR PORTUGAL, British Airways, 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

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

Best price found	£1,648
Fastest flight time	18h 19m
Direct flights	None

The best one-way flight to London Heathrow Airport from Key West in the past 72 hours is £1,648. The best return flight deal from Key West to London Heathrow Airport found on momondo in the last 72 hours is £654.

The fastest flight from Key West to London Heathrow Airport takes 18h 19m

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?
The distance between Key West and London Heathrow is about 4541.3 mi. A reasonable flight in good conditions will take 18h 19m.
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.

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Hayes

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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.