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$621+ Cheap flights from Key West (EYW) to London (LON)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LON
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Key West to London

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to London (LON). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$621
(KLM)
Provider with most accurate pricing for Key West-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-London (LON) flights.
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From Key West to London (LON)
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Find flight deals from Key West to London

Cheapest flights from Key West to London
Explore the most affordable flight options available from Key West to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This KLM deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:38 pmEYW - LHR
1 stop14h 12mKLM
Mon 12/86:30 amLHR - EYW
2 stops18h 36mKLM
Deal found 10/30$621
This Virgin Atlantic deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:02 pmEYW - LHR
2 stops14h 48mVirgin Atlantic
Mon 12/86:30 amLHR - EYW
2 stops15h 45mVirgin Atlantic
Deal found 10/30$625
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/74:10 pmEYW - LHR
1 stop14h 20mAmerican Airlines
Sun 12/1411:45 amLHR - EYW
1 stop15h 00mAmerican Airlines
Deal found 10/30$674
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:47 pmEYW - LHR
1 stop13h 23mUnited Airlines
Sun 12/1410:25 amLHR - EYW
2 stops32h 26mUnited Airlines
Deal found 10/29$864
This FlightHub deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:33 pmEYW - LHR
2 stops21h 52mMultiple Airlines
Sun 12/146:05 amLHR - EYW
2 stops18h 30mMultiple Airlines
Deal found 10/30$960
This Cheapflightsfares deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:33 pmEYW - LGW
2 stops16h 17mBritish Airways
Sun 12/147:40 pmLGW - EYW
2 stops28h 55mBritish Airways
Deal found 10/30$8,204

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key West to London 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 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Key West to London that are best for you.

Fly from

Key West

Fly to

London

Route

Depart

Return

Price

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/4

12:38 pm-7:50 am

1 stop14h 12m

London Heathrow

Mon 12/8

6:30 am-8:06 pm

2 stops18h 36m

$621

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 12/4

3:02 pm-10:50 am

2 stops14h 48m

London Heathrow

Mon 12/8

6:30 am-5:15 pm

2 stops15h 45m

$625

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 2/1

1:33 pm-11:30 am

1 stop16h 57m

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

1:33 pm-10:35 am

2 stops16h 02m

London Heathrow

Tue 2/10

10:05 am-11:56 pm

2 stops18h 51m

$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

9:55 am-9:45 pm

1 stop16h 50m

$674

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 3/27

2:35 pm-7:50 am

1 stop13h 15m

London Heathrow

Tue 3/31

10:55 am-7:44 pm

1 stop13h 49m

$771

Key WestLondon

EYW - LGW

EYWLGW

Key West

Sun 2/1

1:33 pm-10:50 am

2 stops16h 17m

London Gatwick

Tue 2/10

11:45 am-11:56 pm

2 stops17h 11m

$928

Key WestLondon

EYW - LGW

EYWLGW

Key West

Fri 3/27

6:31 am-7:30 am

2 stops20h 59m

London Gatwick

Tue 3/31

2:30 pm-6:30 pm

2 stops33h 00m

$934

Key WestLondon

EYW - LGW

EYWLGW

Key West

Sun 12/7

1:33 pm-10:50 am

2 stops16h 17m

London Gatwick

Sun 12/14

7:40 pm-7:35 pm

2 stops28h 55m

$8,204

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Compare providers for flights from Key West to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Key West to London in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Key West-London flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Key West-London flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Key West-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Key West-London flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Key West to London

Have a flexible travel schedule? Discover the best time to fly to London from Key West with our price prediction graph.
Estimated round-trip 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 Key West to London

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

Find hourly flight availability from Key West to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

When flying from Key West to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 66% versus a flight in the evening.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with American Airlines from Key West to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,034 reviews

Crew

8.0

Comfort

7.2

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
11,034 reviews
American Airlines
7.2
Good
11,034 reviews

Crew

8.0

Comfort

7.2

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

Find useful and relevant information for your journey from Key West to London. 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 from for flights from Key West to London?

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

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

    Departing from Key West to London will take you 14h 12m. Key West and London are separated by a distance of 4539 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key West to London 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

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