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Cheap flights from London to Key West from £434

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — EYW
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to Key West

Enter your travel dates to find the best prices.

Cheapest flights from London to Key West
Explore the most affordable flight options available from London to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 October 2025.

Sat 6/1210:45LHR - EYW
1 stop14h 21mVirgin Atlantic
Sat 13/1218:10EYW - LHR
1 stop12h 30mVirgin Atlantic
Deal found 22/10£531
Sat 15/1110:45LHR - EYW
1 stop14h 08mVirgin Atlantic
Sat 22/1118:18EYW - LHR
2 stops56h 32mVirgin Atlantic
Deal found 23/10£533
Sat 6/1206:15LHR - EYW
2 stops18h 20mBritish Airways
Sat 13/1220:05EYW - LHR
1 stop11h 00mBritish Airways
Deal found 22/10£539
Mon 15/1206:05LHR - EYW
2 stops22h 02mBritish Airways
Mon 22/1213:46EYW - LHR
1 stop12h 04mBritish Airways
Deal found 21/10£544
Sat 15/1106:20LHR - EYW
2 stops18h 33mMultiple Airlines
Sat 22/1118:18EYW - LHR
2 stops56h 32mMultiple Airlines
Deal found 23/10£547
Mon 15/1208:55LHR - EYW
1 stop16h 11mVirgin Atlantic
Mon 22/1213:02EYW - LHR
1 stop12h 23mVirgin Atlantic
Deal found 21/10£549
Fri 5/1211:15LHR - EYW
1 stop16h 52mBritish Airways
Fri 12/1216:10EYW - LHR
1 stop11h 05mBritish Airways
Deal found 20/10£555
Fri 5/1216:20LHR - EYW
2 stops26h 26mUnited Airlines
Fri 12/1214:47EYW - LHR
2 stops15h 03mUnited Airlines
Deal found 20/10£560
Thu 13/1110:00LCY - EYW
2 stops36h 23mDelta
Mon 17/1118:18EYW - LCY
2 stops34h 12mDelta
Deal found 22/10£573
Sat 6/1214:00LGW - EYW
1 stop23h 15mMultiple Airlines
Sat 13/1210:47EYW - LGW
2 stops38h 13mMultiple Airlines
Deal found 22/10£589
Tue 23/1209:20LHR - EYW
1 stop31h 57mJetBlue
Thu 8/113:05EYW - LHR
1 stop12h 50mJetBlue
Deal found 22/10£666
Mon 15/1219:15LCY - EYW
2 stops32h 52mBritish Airways
Mon 22/1216:03EYW - LCY
2 stops41h 02mBritish Airways
Deal found 21/10£708

Cheap flight deals from London to Key West

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 24 October 2025.

Round-trip from

£423

Popular in

December

Cheapest in

September

Average price

£628
17/1-6/2
  • 17/1-6/2
  • 2 total stops
  • 40h 00m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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, Cheapflights users made 858,174 searches. Data last updated 24 October 2025.
Use the filters below to find and compare flights from London to Key West that are best for you.

Fly from

London

Fly to

Key West

Route

Depart

Return

Price

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/3

11:25-23:59

2 stops17h 34m

Key West

Wed 11/3

12:09-06:15

2 stops14h 06m

£512

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 19/2

16:50-17:13

2 stops29h 23m

Key West

Sun 22/2

18:00-08:45

2 stops33h 45m

£523

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 15/11

10:45-19:53

1 stop14h 08m

Key West

Sat 22/11

18:18-07:50

2 stops56h 32m

£533

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 6/12

06:30-20:06

2 stops18h 36m

Key West

Sat 13/12

15:02-10:50

2 stops14h 48m

£535

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 6/12

06:15-19:35

2 stops18h 20m

Key West

Sat 13/12

20:05-12:05

1 stop11h 00m

£539

LondonKey West

LCY - EYW

LCYEYW

London City

Thu 13/11

10:00-17:23

2 stops36h 23m

Key West

Mon 17/11

18:18-09:30

2 stops34h 12m

£573

LondonKey West

LGW - EYW

LGWEYW

London Gatwick

Sat 6/12

14:00-08:15

1 stop23h 15m

Key West

Sat 13/12

10:47-06:00

2 stops38h 13m

£589

LondonKey West

LCY - EYW

LCYEYW

London City

Thu 19/2

09:40-13:15

3 stops32h 35m

Key West

Sun 22/2

14:15-18:40

2 stops23h 25m

£686

LondonKey West

LCY - EYW

LCYEYW

London City

Wed 8/4

09:15-22:11

2 stops17h 56m

Key West

Mon 13/4

14:30-18:35

2 stops23h 05m

£704

LondonKey West

LCY - EYW

LCYEYW

London City

Mon 15/12

19:15-23:07

2 stops32h 52m

Key West

Mon 22/12

16:03-14:05

2 stops41h 02m

£708

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 22 results
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Best time to book a flight from London to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Key West

What is the cheapest month to book a flight from London to Key West?

Currently, March is the cheapest month in which you can book a flight from London to Key West (average of £438). Flying from London to Key West in July is currently the most expensive (average of £643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to EYW?

Find hourly flight availability from London to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 October 2025.

It’s optimal to fly from London to Key West at midday. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the evening.

How much does it cost for a return flight from London to Key West?

What’s the top stopover airport for flights from London to Key West?

Share of one-stop return flights from London to Key West chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Atlanta (ATL) – chosen by Cheapflights users on 54% of one-stop itineraries from London to Key West on Cheapflights.

What’s the cheapest stopover airport for flights from London to Key West?

Average return fare for one-stop flights from London to Key West, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Charlotte (CLT) is the most affordable one-stop option, with an average return flight price of £547.

What’s the fastest stopover option from London to Key West?

Shortest average travel time for one-stop one-way flights from London to Key West, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Miami (MIA) have the shortest average one-way travel time for one-stop routes: 13h 30m.

Which airport typically offers the quickest stopover for flights from London to Key West?

Average stopover duration for one-stop one-way flights from London to Key West, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 49m.

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated 24 October 2025.
Check out reviews from past customers who have flown with Finnair, Virgin Atlantic, andBritish Airways from London to Key West to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,333 reviews
Check prices

Overall

7.6

Food

6.7

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Overall

7.6

Food

6.7

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.5
Good
670 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Overall

7.6

Food

6.7

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,469 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Overall

7.6

Food

6.7

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from London to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Key West from London?

    Key West (EYW), located 2.6 mi from the city center, is the airport you fly into when you book flights from London to Key West. 3 airlines have flights to Key West from London on a regular basis. Booking flights from London to Key West should not be difficult; the airport handles an average of 0 inbound flights from London per day.

  • How long is the flight from London to Key West?

    For as low as £512, American Airlines can have you in Key West from London in 17h 34m. The distance from London to Key West is about 4539 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Key West round-trip?

    British Airways, at £453, was found to be the cheapest airline from London to Key West.Alternate airlines flying return to your destination include Virgin Atlantic and American Airlines. These flights start at 27% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London to Key West one-way?

    The cheapet airlines for a one-way flight from London to Key West are Virgin Atlantic (£434), KLM (£444), and British Airways (£507).

  • What are the most popular routes from London to Key West?

    The most popular route from London to Key West is London Heathrow - Key West. You may also consider London Gatwick - Key West or London City - Key West.

  • Can I find deals for flights from London to Key West that include hotel bookings?

    Yes. In addition to deals on London to Key West flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Key West.

  • Can I find deals for business class flights from London to Key West?

    Yes. Cheapflights offers flight deals from London to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Key West?

    Currently, March is the cheapest month in which you can book a flight from London to Key West (average of £438). Flying from London to Key West in July is currently the most expensive (average of £643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from London to Key West

Discover the top 3 airlines that operate flights from London to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£453Average£545FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£487Average£906FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£520Average£559FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Key West?

Cheapflights helps you search for flights from London to Key West via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Key West?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Key West from London.

Can Cheapflights find flights from London to Key West with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Key West flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Key West become cheaper?

Of course! You can now track prices for flights from London to Key West and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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