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651 € Cheap Flights from London Heathrow to Key West International

Compare London Heathrow to Key West International flight deals

Find the cheapest month or even day of the year to fly to Key West International

Book the best Key West International fare with no extra fees

Flight deals from London Heathrow to Key West International

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Key West International Airport? If you want to travel next month, return fares start from 771 €. Find the lowest prices on one-way and return tickets right here.
Key West.651 € per passenger.Departing Tue, 1 Sep, returning Tue, 15 Sep.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 1 Sep, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Tue, 15 Sep, arriving in London Heathrow.Price includes taxes and charges.From 651 €, select.
Key West.652 € per passenger.Departing Mon, 1 Mar, returning Mon, 8 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Mon, 1 Mar, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 8 Mar, arriving in London Heathrow.Price includes taxes and charges.From 652 €, select.
Key West.653 € per passenger.Departing Tue, 1 Sep, returning Thu, 1 Oct.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 1 Sep, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Thu, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From 653 €, select.
Key West.663 € per passenger.Departing Tue, 12 Jan, returning Mon, 18 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 12 Jan, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 18 Jan, arriving in London Heathrow.Price includes taxes and charges.From 663 €, select.
Key West.673 € per passenger.Departing Mon, 1 Feb, returning Mon, 8 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Mon, 1 Feb, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 8 Feb, arriving in London Heathrow.Price includes taxes and charges.From 673 €, select.
Key West.686 € per passenger.Departing Fri, 9 Oct, returning Mon, 19 Oct.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Fri, 9 Oct, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 19 Oct, arriving in London Heathrow.Price includes taxes and charges.From 686 €, select.
Key West.692 € per passenger.Departing Mon, 16 Nov, returning Mon, 23 Nov.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Mon, 16 Nov, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Mon, 23 Nov, arriving in London Heathrow.Price includes taxes and charges.From 692 €, select.
Key West.708 € per passenger.Departing Mon, 22 Feb, returning Sun, 7 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Mon, 22 Feb, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Sun, 7 Mar, arriving in London Heathrow.Price includes taxes and charges.From 708 €, select.
Key West.722 € per passenger.Departing Mon, 31 Aug, returning Thu, 1 Oct.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Mon, 31 Aug, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Thu, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From 722 €, select.
Key West.742 € per passenger.Departing Wed, 28 Oct, returning Mon, 2 Nov.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 28 Oct, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 2 Nov, arriving in London Heathrow.Price includes taxes and charges.From 742 €, select.
Key West.759 € per passenger.Departing Thu, 14 May, returning Mon, 18 May.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Thu, 14 May, arriving in Key West International.Inbound indirect flight with British Airways, departs from Key West International on Mon, 18 May, arriving in London Heathrow.Price includes taxes and charges.From 759 €, select.
Key West.769 € per passenger.Departing Tue, 16 Jun, returning Mon, 6 Jul.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Tue, 16 Jun, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Mon, 6 Jul, arriving in London Heathrow.Price includes taxes and charges.From 769 €, select.
Key West.771 € per passenger.Departing Mon, 1 Jun, returning Mon, 15 Jun.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Mon, 1 Jun, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Mon, 15 Jun, arriving in London Heathrow.Price includes taxes and charges.From 771 €, select.
Key West.808 € per passenger.Departing Wed, 16 Dec, returning Sat, 26 Dec.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Wed, 16 Dec, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Sat, 26 Dec, arriving in London Heathrow.Price includes taxes and charges.From 808 €, select.
Key West.828 € per passenger.Departing Sat, 30 May, returning Mon, 8 Jun.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Sat, 30 May, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Mon, 8 Jun, arriving in London Heathrow.Price includes taxes and charges.From 828 €, select.
Key West.839 € per passenger.Departing Thu, 2 Jul, returning Fri, 10 Jul.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Thu, 2 Jul, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Fri, 10 Jul, arriving in London Heathrow.Price includes taxes and charges.From 839 €, select.

Find the cheapest month to fly from London Heathrow to Key West International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Key West International flights are currently cheapest in September.
May
from 759 €
Jun
from 771 €
Jul
from 839 €
Aug
from 1.073 €
Sep
from 651 €
Oct
from 686 €
Nov
from 692 €
Dec
from 808 €
Jan
from 663 €
Feb
from 673 €
Mar
from 652 €
Apr
Find prices

London Heathrow to Key West International: Alternative routes

Compare routes from London Heathrow to Key West below. You may find an airport to fly into that's cheaper, faster, or easier than Key West International.

Key West International

5km from central Key West
ClosestCheapest
from 651 €
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London to Key West: Flight information

The things to know before you go.
Cheapest flight found651 €
Cheapest month to flySeptember

Finding cheap flights from London Heathrow to Key West International: Frequently asked questions

The best price we found for a return flight from London Heathrow to Key West International is 651 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Key West International. But we found flights with one or more stops from 651 €.
As of May 2026, there are no flights flying from London Heathrow to Key West International.
The cheapest month to fly from London Heathrow to Key West International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Key West International Airport on Tuesday, 1 September 2026.
No airlines currently offer direct flights between London Heathrow Airport and Key West International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Key West International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Key West is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, British Airways offers the cheapest flight tickets to Key West International.

Flying from London Heathrow Airport (LHR) to Key West International Airport (EYW): what you need to know

  • To ensure you catch your LHR to EYW flight, leave enough time to check in and drop off your luggage. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.

  • Flying during a peak time like July? School holidays and other popular seasons can lead to longer lines and delays at airport checkpoints. Be extra cautious and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from London Heathrow Airport to Key West International Airport. Just uncheck 'Direct flights only' to break up your trip, or even explore someplace new along the way. Check out these options between LHR and EYW:

    • Miami International Airport

    • Charlotte Douglas International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Key West International Airport (EYW)

  • 413 € is the best price for a one-way London Heathrow Airport to Key West International Airport flight. A return flight starts from 651 €. These fares can change based on availability and demand.

  • Don't wait until the last minute. You're more likely to get cheap tickets from LHR to EYW if you book in advance. Airlines often offer some fantastic early bird discounts.

  • The 'Whole month' search tool shows you the cheapest flights from London Heathrow Airport to Key West International Airport across the month. It's an easy way to snap up a bargain if your travel dates are flexible.

  • Save time searching for cheap flights from LHR to EYW by setting up a Price Alert. We'll send you an email or push notification on the app when a new low fare is offered.

  • Select your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from London Heathrow Airport to Key West International Airport.

Handy information about London Heathrow Airport (LHR)

  • Of all flights leaving London Heathrow Airport, 68.18% arrive on time at their destination.

  • To reach London Heathrow Airport from central London, it'll take around 55 minutes if you're planning to drive. Of course, this depends on traffic. It's approximately 31 kilometres from the airport to the city centre.

  • You can expect a trip time of about 1 hour when using public transport.

  • Have an early flight from London Heathrow Airport to Key West International Airport? Avoid the stress of rushing to the terminal (and get some extra shut-eye) by choosing one of these stays close to LHR:

Arriving at Key West International Airport (EYW)

Getting from Key West International Airport (EYW) to central Key West

  • You'll find EYW at 3491 South Roosevelt Boulevard.

  • Key West International Airport to central Key West has a drive time of about 5 minutes. It's approximately 3 kilometres away.

  • Getting there by public transport takes about 40 minutes.

When to fly to Key West International Airport (EYW)

  • January is the most popular month for flights from London Heathrow Airport to Key West International Airport. For smaller crowds, visit Key West in February.

  • Book your flight from London Heathrow Airport to Key West International Airport for August if you want to go to Key West during its warmest month. Expect temperatures of between 26ºC (79ºF) and 30ºC (86ºF).

  • If you want cooler conditions, look for a cheap ticket from LHR to EYW in January. Average temperatures are between 18ºC (64ºF) and 23ºC (73ºF) then.

Explore more of United States

  • You've done Key West, now it's time to discover other corners of United States. Travel around 209 kilometres north-east to Miami to check off its leading attractions. From Wynwood Walls to Vizcaya Museum and Gardens and American Airlines Arena, you'll have a full itinerary ahead.

  • If you're interested in discovering another major stop in United States, head for Tampa, roughly 386 kilometres north of Key West. Ybor City Tattoo Company, Tampa Riverwalk and The Florida Aquarium are key reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.