Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Key West from £424

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Key West departing on 6/2. 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

Discover deals from 900+ travel sites with momondo.

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 London Heathrow Airport to Key West

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:05 - 16:22
LHR
-
EYW
33h 17m1 stop
United Airlines Logo
16:15 - 07:55
EYW
-
LHR
34h 40m1 stop
£424United Airlines
ו', 6 פב​​​​​​​' - ב', 9 פב​​​​​​​'
United Airlines Logo
12:45 - 16:07
LHR
-
EYW
32h 22m2 stops
United Airlines Logo
18:40 - 20:35
EYW
-
LHR
20h 55m2 stops
£438United Airlines
ה', 12 פב​​​​​​​' - ו', 27 פב​​​​​​​'
United Airlines Logo
16:20 - 16:07
LHR
-
EYW
28h 47m1 stop
United Airlines Logo
14:15 - 08:25
EYW
-
LHR
13h 10m1 stop
£440United Airlines
ה', 12 פב​​​​​​​' - ו', 27 פב​​​​​​​'
United Airlines Logo
16:20 - 16:22
LHR
-
EYW
29h 02m1 stop
United Airlines Logo
16:15 - 11:15
EYW
-
LHR
14h 00m1 stop
£441United Airlines
ו', 6 פב​​​​​​​' - ב', 9 פב​​​​​​​'
United Airlines Logo
16:20 - 16:07
LHR
-
EYW
28h 47m1 stop
United Airlines Logo
18:40 - 20:35
EYW
-
LHR
20h 55m2 stops
£447United Airlines
ה', 12 פב​​​​​​​' - ו', 27 פב​​​​​​​'
United Airlines Logo
16:00 - 16:22
LHR
-
EYW
29h 22m2 stops
United Airlines Logo
16:15 - 11:15
EYW
-
LHR
14h 00m1 stop
£449United Airlines
ו', 6 פב​​​​​​​' - ב', 9 פב​​​​​​​'
United Airlines Logo
13:40 - 15:57
LHR
-
EYW
31h 17m1 stop
United Airlines Logo
16:38 - 07:40
EYW
-
LHR
34h 02m1 stop
£454United Airlines
ג', 7 אפר' - ב', 13 אפר'
United Airlines Logo
16:40 - 17:39
LHR
-
EYW
29h 59m2 stops
United Airlines Logo
16:38 - 07:40
EYW
-
LHR
34h 02m1 stop
£455United Airlines
ג', 7 אפר' - ב', 13 אפר'
United Airlines Logo
16:20 - 16:07
LHR
-
EYW
28h 47m1 stop
United Airlines Logo
14:15 - 08:25
EYW
-
LHR
13h 10m1 stop
£457United Airlines
ה', 12 פב​​​​​​​' - ו', 27 פב​​​​​​​'
United Airlines Logo
16:20 - 16:07
LHR
-
EYW
28h 47m1 stop
United Airlines Logo
18:40 - 20:35
EYW
-
LHR
20h 55m2 stops
£464United Airlines
ה', 12 פב​​​​​​​' - ו', 27 פב​​​​​​​'

United Airlines flights from London Heathrow Airport to Key West

Our best United Airlines deals on London Heathrow Airport to Key West flight tickets
United Airlines
6 Feb
LHR12:05London Heathrow
33h 17m
1 stop
EYW16:22Key West
9 Feb
EYW16:15Key West
34h 40m
1 stop
LHR07:55London Heathrow
£424
Find similar
United Airlines
12 Feb
LHR12:45London Heathrow
32h 22m
2 stops
EYW16:07Key West
27 Feb
EYW18:40Key West
20h 55m
2 stops
LHR20:35London Heathrow
£438
Find similar
United Airlines
12 Feb
LHR16:20London Heathrow
28h 47m
1 stop
EYW16:07Key West
27 Feb
EYW14:15Key West
13h 10m
1 stop
LHR08:25London Heathrow
£440
Find similar

British Airways flights from London Heathrow Airport to Key West

Our best British Airways deals on London Heathrow Airport to Key West flight tickets
British Airways
6 Feb
LHR11:25London Heathrow
17h 31m
2 stops
EYW23:56Key West
9 Feb
EYW19:45Key West
15h 20m
2 stops
LHR16:05London Heathrow
£516
Find similar
British Airways
6 Feb
LHR11:25London Heathrow
17h 31m
2 stops
EYW23:56Key West
9 Feb
EYW19:45Key West
15h 20m
2 stops
LHR16:05London Heathrow
£516
Find similar
British Airways
1 Apr
LHR11:30London Heathrow
17h 26m
2 stops
EYW23:56Key West
8 Apr
EYW16:02Key West
14h 03m
1 stop
LHR11:05London Heathrow
£715
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Key West 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 27 דצמבר 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ו' 6/2

12:05-16:22

1 stop33h 17m

Key West

ב' 9/2

16:15-07:55

1 stop34h 40m

£424

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ה' 12/2

12:45-16:07

2 stops32h 22m

Key West

ו' 27/2

18:40-20:35

2 stops20h 55m

£438

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ה' 12/2

16:20-16:07

1 stop28h 47m

Key West

ו' 27/2

14:15-08:25

1 stop13h 10m

£440

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ו' 6/2

16:20-16:22

1 stop29h 02m

Key West

ב' 9/2

16:15-11:15

1 stop14h 00m

£441

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ה' 12/2

16:20-16:07

1 stop28h 47m

Key West

ו' 27/2

18:40-20:35

2 stops20h 55m

£447

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ו' 6/2

16:00-16:22

2 stops29h 22m

Key West

ב' 9/2

16:15-11:15

1 stop14h 00m

£449

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ג' 7/4

13:40-15:57

1 stop31h 17m

Key West

ב' 13/4

16:38-07:40

1 stop34h 02m

£454

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ג' 7/4

16:40-17:39

2 stops29h 59m

Key West

ב' 13/4

16:38-07:40

1 stop34h 02m

£455

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ה' 12/2

16:20-16:07

1 stop28h 47m

Key West

ו' 27/2

14:15-08:25

1 stop13h 10m

£457

LondonKey West

LHR - EYW

LHREYW

London Heathrow

ה' 12/2

16:20-16:07

1 stop28h 47m

Key West

ו' 27/2

18:40-20:35

2 stops20h 55m

£464

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to Key West from

How to get the cheapest flight ticket from London Heathrow Airport to Key West

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 month to fly to Key West?

If you aren’t able to travel to Key West during the month of May, then flying in November is also cheap. Prices for this month can be found on momondo for an average of £504.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £520. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Key West on Thursday is £648.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from London Heathrow Airport to Key West in the morning for as low as £570. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around £812. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 13% on your flight if you consider stops on a London Heathrow Airport to Key West flight.

When to book flights from London Heathrow Airport to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Key West (LHR to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Key West

Fastest flight time

13h 27m

Direct flights

None
The fastest flight from London Heathrow Airport to Key West takes 13h 27m
There are no direct flights from London Heathrow Airport to Key West. There are no popular flight routes from London Heathrow Airport to Key West.
Search flight deals

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

    The distance between London Heathrow and Key West is about 4541.3 mi. A reasonable flight in good conditions will take 13h 27m.

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

    Prices for flights from London Heathrow Airport to Key West Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London Heathrow Airport to Key West Airport?

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

  • What documentation or ID do you need to fly to Key West Airport?

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London Heathrow Airport to Key West?

Best airlines flying from London Heathrow Airport to Key West

Compare and see reviews for airlines that fly from London Heathrow Airport to Key West with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £448Free CancellationRating
6.7
7,617 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £489Free CancellationRating
7.5
677 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom £514Free CancellationRating
7.2
11,073 reviews
Search American Airlines flights

Travelling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Key West from London which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential London to Key West flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of London to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Key West 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
ב' 26/1
ב' 2/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States