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$609+ Cheap flights from Key West (EYW) to Heathrow (LHR)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$1,158
(United Airlines)

One-way from

$609
(Delta)

Popular in

October

Cheapest in

September

Average price

$798
Provider with most accurate pricing for Key West-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Key West-London Heathrow flights.
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From Key West to London Heathrow
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One-way flight from Key West to London Heathrow
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Highest demand for flights based on searches. 2% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 7/71:41 pmEYW - LHR
2 stops15h 59mUnited Airlines
Sat 7/194:40 pmLHR - EYW
2 stops25h 01mUnited Airlines
Deal found 4/29$1,158
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/712:47 pmEYW - LHR
1 stop13h 53mAmerican Airlines
Sat 7/193:00 pmLHR - EYW
1 stop28h 14mAmerican Airlines
Deal found 4/29$1,162
This Air France deal was found by Cheapflights users on 4/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/246:29 pmEYW - LHR
1 stop11h 41mAir France
Tue 7/156:15 amLHR - EYW
2 stops18h 31mAir France
Deal found 4/29$1,270
This British Airways deal was found by Cheapflights users on 4/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/241:24 pmEYW - LHR
1 stop16h 11mBritish Airways
Tue 7/159:55 amLHR - EYW
1 stop14h 26mBritish Airways
Deal found 4/29$1,278
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2411:48 amEYW - LHR
2 stops16h 02mDelta
Tue 7/158:10 pmLHR - EYW
2 stops19h 41mDelta
Deal found 4/29$1,282
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/132:07 pmEYW - LHR
2 stops21h 18mMultiple Airlines
Sun 6/227:30 amLHR - EYW
2 stops30h 52mMultiple Airlines
Deal found 4/29$1,319
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1311:48 amEYW - LHR
1 stop13h 57mKLM
Sun 6/228:55 pmLHR - EYW
2 stops25h 39mKLM
Deal found 4/29$1,404

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 April 29, 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

Mon 7/7

1:41 pm-10:40 am

2 stops15h 59m

London Heathrow

Sat 7/19

4:40 pm-12:41 pm

2 stops25h 01m

$1,158

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 7/7

12:47 pm-7:40 am

1 stop13h 53m

London Heathrow

Sat 7/19

3:00 pm-2:14 pm

1 stop28h 14m

$1,162

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 6/24

6:29 pm-11:10 am

1 stop11h 41m

London Heathrow

Tue 7/15

6:15 am-7:46 pm

2 stops18h 31m

$1,270

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 6/24

1:24 pm-10:35 am

1 stop16h 11m

London Heathrow

Tue 7/15

9:55 am-7:21 pm

1 stop14h 26m

$1,278

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 6/24

11:48 am-8:50 am

2 stops16h 02m

London Heathrow

Tue 7/15

8:10 pm-10:51 am

2 stops19h 41m

$1,282

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 6/13

2:07 pm-4:25 pm

2 stops21h 18m

London Heathrow

Sun 6/22

7:30 am-9:22 am

2 stops30h 52m

$1,319

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 6/13

11:48 am-6:45 am

1 stop13h 57m

London Heathrow

Sun 6/22

8:55 pm-5:34 pm

2 stops25h 39m

$1,404

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 5/16

7:00 am-6:45 am

1 stop18h 45m

$609

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 6/5

5:32 pm-10:15 pm

3 stops47h 43m

$653

Key WestLondon

EYW - LHR

EYWLHR

Key West

Thu 6/5

1:24 pm-11:05 am

2 stops16h 41m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 11 results
1
2
  • Most accurate provider: When it comes to deals on Key West-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Cheapflights Insights

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

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

Find hourly flight availability from Key West to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s typically best to fly out from Key West to London Heathrow Airport in the morning. Doing so could potentially save you 62% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated April 29, 2025.
Get a feel of what it's like to fly with Delta, KLM and Air France 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.
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    According to our current data, United Airlines ($1,158), American Airlines ($1,162), and Air France ($1,270) offers the cheapest pricing from Key West to London Heathrow Airport.

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

    $609 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on British Airways and KLM, with prices starting from $734 and $898, respectively.

  • 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.

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

    Currently, November is the cheapest month in which you can book a flight from Key West to London Heathrow Airport (average of $661). Flying from Key West to London Heathrow Airport in June is currently the most expensive (average of $1,110). 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

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Borehamwood
Folkestone
Ilford
Broadway
Aylesbury

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