HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$629+ Cheap flights from Key West (EYW) to Heathrow (LHR)

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
jan 8 — jan 151
qui 1/8
qui 1/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key West to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Key West to Heathrow

Cheapest flights from Key West to Heathrow
Explore the most affordable flight options available from Key West to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on dezembro 9, 2025.

This American Airlines deal was found by Cheapflights users on 12/7. 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.
dom 12/78:05 pmEYW - LHR
2 stops15h 55mAmerican Airlines
dom 12/1411:45 amLHR - EYW
1 stop15h 00mAmerican Airlines
Deal found 12/7$934
This FlightHub deal was found by Cheapflights users on 12/7. 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.
dom 12/78:05 pmEYW - LHR
2 stops21h 05mBritish Airways
dom 12/146:45 pmLHR - EYW
2 stops29h 50mBritish Airways
Deal found 12/7$1,079

Find flight deals from Key West to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Heathrow (LHR). 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 dezembro 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$629
(KLM)
Provider with most accurate pricing for Key West-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-London Heathrow flights.
Search Deals
From Key West to London Heathrow
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key West to Heathrow 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 dezembro 9, 2025.
Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

Fly from

Key West

Fly to

Heathrow

Route

Depart

Return

Price

Key WestLondon

EYW - LHR

EYWLHR

Key West

dom 1/25

6:06 pm-11:40 am

1 stop12h 34m

London Heathrow

dom 2/1

6:30 am-7:40 pm

2 stops18h 10m

$629

Key WestLondon

EYW - LHR

EYWLHR

Key West

dom 2/1

7:45 pm-8:35 am

1 stop31h 50m

London Heathrow

ter 2/10

6:00 am-7:10 pm

2 stops18h 10m

$631

Key WestLondon

EYW - LHR

EYWLHR

Key West

dom 2/1

6:43 pm-12:00 pm

1 stop12h 17m

London Heathrow

ter 2/10

11:15 am-11:56 pm

1 stop17h 41m

$656

Key WestLondon

EYW - LHR

EYWLHR

Key West

sex 1/30

6:05 pm-10:50 am

1 stop11h 45m

London Heathrow

ter 2/3

1:35 pm-3:17 pm

1 stop30h 42m

$661

Key WestLondon

EYW - LHR

EYWLHR

Key West

dom 1/25

2:45 pm-11:55 am

2 stops16h 10m

London Heathrow

dom 2/1

6:30 am-7:40 pm

2 stops18h 10m

$708

Key WestLondon

EYW - LHR

EYWLHR

Key West

qua 12/17

4:10 pm-12:05 pm

1 stop14h 55m

$674

Key WestLondon

EYW - LHR

EYWLHR

Key West

qui 12/18

4:03 pm-8:15 am

1 stop11h 12m

$744

Key WestLondon

EYW - LHR

EYWLHR

Key West

qua 12/17

12:00 pm-9:15 am

2 stops16h 15m

$781

Key WestLondon

EYW - LHR

EYWLHR

Key West

qui 12/18

12:20 pm-3:35 pm

3 stops46h 15m

$855

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Compare providers for flights from Key West to Heathrow

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 Heathrow in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Heathrow Airport 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 Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Key West-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Key West-London Heathrow Airport 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 Heathrow Airport 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 Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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.

Related info for your journey

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

    If you book a flight to London Heathrow from Key West, you will be flying from Key West, which is the city’s only airport. Key West (EYW) is located 2.6 mi from the center of Key West. There are 0 flights from Key West to London Heathrow per day from 0 different airlines.

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

    A quick flight from Key West to London Heathrow Airport can take about 12h 34m. KLM provides one of the quickest options available for as low as $629. The distance from Key West to London Heathrow Airport is about 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 Heathrow that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Key West to Heathrow 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key West to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Miami to Heathrow flights
Orlando to Heathrow flights
Tampa to Heathrow flights
Orlando to Gatwick flights
Miami to Gatwick flights
Miami to London City flights
Tampa to Gatwick flights
Miami to Stansted flights
Fort Lauderdale to Heathrow flights
Orlando to London City flights
Tampa to London City flights
Fort Lauderdale to Gatwick flights
Miami to Luton flights
Orlando to Stansted flights
Tampa to Stansted flights
Jacksonville to Heathrow flights
Orlando to Luton flights
West Palm Beach to Heathrow flights
Jacksonville to Gatwick flights
West Palm Beach to Gatwick flights
Pensacola to Heathrow flights
Jacksonville to London City flights
Fort Lauderdale to London City flights
Fort Myers to Heathrow flights
Valparaiso to Heathrow flights
Pensacola to Gatwick flights
Sarasota to Heathrow flights
Tampa to Luton flights
Fort Lauderdale to Stansted flights
Fort Myers to Gatwick flights
Daytona Beach to Heathrow flights
Pensacola to London City flights
Panama City to Heathrow flights
Fort Lauderdale to Luton flights
Miami to Southend flights
Tallahassee to Heathrow flights
West Palm Beach to London City flights
Melbourne to Heathrow flights
Fort Myers to London City flights
Valparaiso to London City flights
Gainesville to Heathrow flights
Tallahassee to Gatwick flights
Tallahassee to London City flights
Sarasota to Gatwick flights
Fort Myers to Stansted flights
Key West to Gatwick flights
Daytona Beach to Gatwick flights
Daytona Beach to London City flights
Valparaiso to Gatwick flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights