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Cheap flights from London Heathrow Airport to Key West from £516

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EYW
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Heathrow to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 21 February 2025.

Round-trip from

£516

Popular in

August

Cheapest in

April

Average price

£755
Virgin Atlantic
  • Virgin Atlantic
  • 2/4-6/4
  • 2 total stops
  • 61h 41m total
  • London to Key West
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£85 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Heathrow to Key West

Cheapest flights from Heathrow to Key West
Explore the most affordable flight options available from Heathrow to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Wed 2/415:15LHR - EYW
1 stop31h 00mVirgin Atlantic
Sun 6/419:34EYW - LHR
1 stop30h 41mVirgin Atlantic
Deal found 20/2£516
Tue 1/411:05LHR - EYW
1 stop32h 59mUnited Airlines
Mon 7/414:03EYW - LHR
1 stop14h 17mUnited Airlines
Deal found 20/2£523
Tue 1/406:15LHR - EYW
2 stops19h 15mDelta
Mon 7/407:00EYW - LHR
1 stop25h 30mDelta
Deal found 20/2£524
Thu 3/408:20LHR - EYW
2 stops15h 39mAmerican Airlines
Mon 7/414:38EYW - LHR
1 stop15h 12mAmerican Airlines
Deal found 20/2£540
Wed 2/409:15LHR - EYW
1 stop12h 29mFinnair
Sun 6/411:39EYW - LHR
1 stop16h 46mFinnair
Deal found 20/2£548
Sun 6/409:30LHR - EYW
2 stops32h 34mLufthansa
Sun 13/416:04EYW - LHR
1 stop33h 16mLufthansa
Deal found 20/2£688

Find flights from Heathrow to Key West within your budget

Customise your flight search to find flights from Heathrow 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 21 February 2025.

Fly from

Heathrow

Fly to

Key West

Route

Depart

Return

Price

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 2/4

15:15-17:15

1 stop31h 00m

Key West

Sun 6/4

19:34-07:15

1 stop30h 41m

£516

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 1/4

11:05-15:04

1 stop32h 59m

Key West

Mon 7/4

14:03-09:20

1 stop14h 17m

£523

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 1/4

06:15-20:30

2 stops19h 15m

Key West

Mon 7/4

07:00-13:30

1 stop25h 30m

£524

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 3/4

08:20-18:59

2 stops15h 39m

Key West

Mon 7/4

14:38-10:50

1 stop15h 12m

£540

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 2/4

09:15-16:44

1 stop12h 29m

Key West

Sun 6/4

11:39-09:25

1 stop16h 46m

£548

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sun 6/4

09:30-13:04

2 stops32h 34m

Key West

Sun 13/4

16:04-06:20

1 stop33h 16m

£688

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 26/2

12:50-16:09

1 stop32h 19m

£1,481

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 26/2

10:05-14:20

3 stops33h 15m

£1,633

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Heathrow to Key West

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

Travel insights for flights from Heathrow to Key West

Get recent, data-driven insights about flights from Heathrow to Key West including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from Heathrow 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 21 February 2025.

When flying from London Heathrow Airport to Key West, 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 21% versus a flight at midday.

Rainfall in Key West by month

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

In terms of precipitation, rainfall in Key West ranges from 38.0 - 170.0 inches per month. September is typically the wettest month, when rainfall can reach 170.0 mm. February is typically the driest time to visit Key West when rainfall is around 38.0 mm.

Temperature in Key West by month

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

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.0 C).

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 21 February 2025.
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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

Delta
8.0
Very Good
8,217 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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

United Airlines
7.4
Good
8,761 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

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 Heathrow 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 Heathrow?

    Most people fly into Key West (EYW) if they book a flight to Key West from London Heathrow. On average, Key West has 0 inbound flights from London Heathrow per day from 3 airlines. Key West is conveniently located just 2.6 mi from Key West’s city center.

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

    Cheapflights users have booked flights from London Heathrow Airport to Key West round-trip from £516. Other airlines that can offer you cheap pricing are United Airlines, from £523, and Delta, from £524. Virgin Atlantic is priced at 21% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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

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Alternative routes for Heathrow to Key West

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Top 3 airlines flying from Heathrow to Key West

Discover the top 3 airlines that operate flights from Heathrow 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£455Average£604FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£457Average£623FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£564Average£916FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Heathrow 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 Heathrow to Key West?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Key West by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes! Start tracking prices for Heathrow to Key West flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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