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Cheap flights from London to Key West from £456

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — EYW
20 Jul — 27 Jul1
1 adult

Cheapflights Tip: The best prices from London to Key West are usually found in September or February, booked 80 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 15 July 2025.

Round-trip from

£456

Popular in

December

Cheapest in

September

Average price

£725
Virgin Atlantic
  • Virgin Atlantic
  • 20/8-20/9
  • 3 total stops
  • 42h 37m total
  • London to Key West
Highest demand for flights based on searches. 4% potential increase in price (£22 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from London to Key West

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 15 July 2025.

Wed 20/820:55LHR - EYW
2 stops28h 17mVirgin Atlantic
Sat 20/918:10EYW - LHR
1 stop14h 20mVirgin Atlantic
Deal found 14/7£456
Thu 13/1118:55LCY - EYW
2 stops53h 49mVirgin Atlantic
Mon 17/1107:00EYW - LCY
2 stops31h 35mVirgin Atlantic
Deal found 12/7£511
Thu 28/809:55LHR - EYW
1 stop14h 12mBritish Airways
Thu 4/913:59EYW - LHR
1 stop15h 36mBritish Airways
Deal found 14/7£512
Thu 28/806:30LHR - EYW
2 stops18h 42mKLM
Thu 4/918:20EYW - LHR
1 stop14h 10mKLM
Deal found 13/7£519
Thu 28/806:30LHR - EYW
2 stops18h 42mDelta
Thu 4/911:52EYW - LHR
2 stops18h 33mDelta
Deal found 13/7£521
Thu 28/814:00LGW - EYW
1 stop28h 07mMultiple Airlines
Thu 4/908:55EYW - LGW
1 stop20h 05mMultiple Airlines
Deal found 13/7£546
Sun 17/806:15LHR - EYW
2 stops16h 12mAir France
Sun 7/918:20EYW - LHR
1 stop11h 50mAir France
Deal found 13/7£566
Thu 13/1110:00LCY - EYW
2 stops36h 12mDelta
Mon 17/1118:00EYW - LCY
2 stops34h 30mDelta
Deal found 11/7£597
Wed 20/816:40LHR - EYW
2 stops26h 45mUnited Airlines
Sat 20/915:05EYW - LHR
2 stops14h 35mUnited Airlines
Deal found 14/7£597
Wed 27/820:10LCY - EYW
2 stops29h 02mKLM
Wed 3/911:52EYW - LCY
2 stops14h 23mKLM
Deal found 13/7£613
Thu 28/808:45LCY - EYW
3 stops34h 40mMultiple Airlines
Thu 4/915:50EYW - LCY
2 stops21h 45mMultiple Airlines
Deal found 14/7£704
Sat 2/808:55LHR - EYW
2 stops15h 26mAmerican Airlines
Thu 7/811:26EYW - LHR
2 stops13h 54mAmerican Airlines
Deal found 13/7£782

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 15 July 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

Wed 20/8

20:55-20:12

2 stops28h 17m

Key West

Sat 20/9

18:10-13:30

1 stop14h 20m

£456

LondonKey West

LCY - EYW

LCYEYW

London City

Thu 13/11

18:55-19:44

2 stops53h 49m

Key West

Mon 17/11

07:00-19:35

2 stops31h 35m

£511

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 28/8

09:55-19:07

1 stop14h 12m

Key West

Thu 4/9

13:59-10:35

1 stop15h 36m

£512

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 28/8

06:30-20:12

2 stops18h 42m

Key West

Thu 4/9

18:20-13:30

1 stop14h 10m

£519

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 28/8

06:30-20:12

2 stops18h 42m

Key West

Thu 4/9

11:52-11:25

2 stops18h 33m

£521

LondonKey West

LGW - EYW

LGWEYW

London Gatwick

Thu 28/8

14:00-13:07

1 stop28h 07m

Key West

Thu 4/9

08:55-10:00

1 stop20h 05m

£546

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 17/8

06:15-17:27

2 stops16h 12m

Key West

Sun 7/9

18:20-11:10

1 stop11h 50m

£566

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 1/1

14:30-13:09

1 stop27h 39m

Key West

Sat 10/1

13:00-07:00

1 stop13h 00m

£570

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 20/8

16:40-14:25

2 stops26h 45m

Key West

Sat 20/9

15:05-10:40

2 stops14h 35m

£597

LondonKey West

LCY - EYW

LCYEYW

London City

Thu 13/11

10:00-17:12

2 stops36h 12m

Key West

Mon 17/11

18:00-09:30

2 stops34h 30m

£597

Flights are sorted by cheapest return flights first.

Deals found on 14/7

Showing 1-10 of 16 results
1
2

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

How far ahead should I book a flight from London to Key West?

Use this chart to determine the optimal time to book a return flight from London to Key West. Price data was last updated on 11 July 2025.

The price you pay for your flight from London to Key West may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 15 July 2025.

It’s optimal to fly from London to Key West in the morning. By choosing this option you can save up to 30% 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?

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 15 July 2025.
Check out reviews from past customers who have flown with Delta, KLM, andAir France 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.

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
8.0
Very Good

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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. 2 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.

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

    Virgin Atlantic, at £456, was found to be the cheapest airline from London to Key West.Alternate airlines flying return to your destination include Delta and British Airways. These flights start at 26% lower than the current average price 3 months from now.

  • What are the most popular routes from London to 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from London to Key West

Discover the top 2 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 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£428Average£704FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£448Average£505FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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