Which airlines fly to Key West?

There may be other airlines that fly to Key West from United Kingdom, but the most popular among our users are Virgin Atlantic, British Airways, Finnair and American Airlines. These airlines should offer flights to Key West on a routine basis if you’re flying from one of the more popular airports in United Kingdom.

Virgin Atlantic Flights to Key West

Virgin Atlantic is a popular choice for users travelling to Key West. It operates 14 flights every week to Key West, most often flying from Atlanta Hartsfield-Jackson. Virgin Atlantic ticket prices will depend on when and where you need to fly from - deals as low as £501 (from London Heathrow) have been found by momondo users. In 673 reviews, momondo users have rated Virgin Atlantic at an average score of 7.5/10.

American Airlines Flights to Key West

American Airlines (7.2/10, 11,049 reviews) is also a popular choice for flights to Key West, with deals from as low as £528 from London Heathrow, round-trip. With 26 American Airlines flights to Key West on average each week, prices can vary significantly by origin and availability.

How long does it take to fly to Key West?

The flight from United Kingdom to Key West depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from London Heathrow (a popular airport in United Kingdom) to Key West (the most popular airport in Key West), then the flight time is 13h 49m on average. If you fly from Manchester (another popular airport in United Kingdom) to Key West, then the average flight time is 20h 09m.

£488 Cheap Flights to Key West in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United Kingdom to Key West

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:55 - 19:44LHR-EYW

13h 49m1 stop

18:00 - 13:30EYW-LHR

14h 30m1 stop

£488Virgin Atlantic

Find Deal

Wed, 8 Apr - Mon, 13 Apr

10:55 - 19:44LHR-EYW

13h 49m1 stop

18:00 - 11:10EYW-LHR

12h 10m1 stop

£490Virgin Atlantic

Find Deal

Tue, 7 Apr - Mon, 13 Apr

11:20 - 13:00LGW-EYW

29h 40m2 stops

20:01 - 07:30EYW-LGW

31h 29m2 stops

£497American Airlines

Find Deal

Thu, 12 Mar - Mon, 16 Mar

11:20 - 13:00LGW-EYW

29h 40m2 stops

13:59 - 07:30EYW-LGW

13h 31m2 stops

£497American Airlines

Find Deal

Thu, 12 Mar - Mon, 16 Mar

15:15 - 19:44LHR-EYW

33h 29m1 stop

18:00 - 13:30EYW-LHR

14h 30m1 stop

£525KLM

Find Deal

Wed, 8 Apr - Mon, 13 Apr

15:15 - 17:13LHR-EYW

30h 58m1 stop

14:35 - 11:10EYW-LHR

15h 35m1 stop

£526KLM

Find Deal

Wed, 8 Apr - Mon, 13 Apr

12:55 - 11:03LHR-EYW

27h 08m2 stops

07:00 - 06:30EYW-LHR

18h 30m1 stop

£548Delta

Find Deal

Wed, 8 Apr - Mon, 13 Apr

20:00 - 19:44LHR-EYW

28h 44m2 stops

14:35 - 13:30EYW-LHR

17h 55m1 stop

£548Delta

Find Deal

Wed, 8 Apr - Mon, 13 Apr

10:10 - 10:53EDI-EYW

29h 43m2 stops

19:34 - 19:00EYW-EDI

18h 26m2 stops

£621British Airways

Find Deal

Sat, 11 Apr - Sat, 25 Apr

19:15 - 19:23LCY-EYW

29h 08m2 stops

20:05 - 14:05EYW-LCY

37h 00m2 stops

£702British Airways

Find Deal

Mon, 1 Dec - Mon, 8 Dec

Fly from

Route

Depart

Return

Price

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

10:55-19:44

1 stop13h 49m

Key West

Mon 13/4

18:00-13:30

1 stop14h 30m

£488

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 7/4

10:55-19:44

1 stop13h 49m

Key West

Mon 13/4

18:00-11:10

1 stop12h 10m

£490

LondonKey West

LGW - EYW

LGWEYW

London Gatwick

Thu 12/3

11:20-13:00

2 stops29h 40m

Key West

Mon 16/3

20:01-07:30

2 stops31h 29m

£497

LondonKey West

LGW - EYW

LGWEYW

London Gatwick

Thu 12/3

11:20-13:00

2 stops29h 40m

Key West

Mon 16/3

13:59-07:30

2 stops13h 31m

£497

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

15:15-19:44

1 stop33h 29m

Key West

Mon 13/4

18:00-13:30

1 stop14h 30m

£525

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

15:15-17:13

1 stop30h 58m

Key West

Mon 13/4

14:35-11:10

1 stop15h 35m

£526

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

12:55-11:03

2 stops27h 08m

Key West

Mon 13/4

07:00-06:30

1 stop18h 30m

£548

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Wed 8/4

20:00-19:44

2 stops28h 44m

Key West

Mon 13/4

14:35-13:30

1 stop17h 55m

£548

EdinburghKey West

EDI - EYW

EDIEYW

Edinburgh Turnhouse

Sat 11/4

10:10-10:53

2 stops29h 43m

Key West

Sat 25/4

19:34-19:00

2 stops18h 26m

£621

LondonKey West

LCY - EYW

LCYEYW

London City

Mon 1/12

19:15-19:23

2 stops29h 08m

Key West

Mon 8/12

20:05-14:05

2 stops37h 00m

£702

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Key West flights insights and trends

Explore insights for your Key West flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to Key West?

If you aren’t able to travel to Key West during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £530.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from United Kingdom is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £534. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Key West on Thursday is £667.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from United Kingdom to Key West in the morning for as low as £586. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around £835. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheapest flights to Key West

Find the cheapest flights to Key West from your nearest city or airport

Find flights from London Heathrow Airport to Key West

CHEAPEST MONTH TO FLY TO KEY WEST FROM LONDON HEATHROW AIRPORT	May	31% cheaper	Flying from London Heathrow Airport to Key West costs on average just £474 in May
MOST EXPENSIVE MONTH TO FLY TO KEY WEST FROM LONDON HEATHROW AIRPORT	March	42% more expensive	It costs about £970 for flights to Key West from London Heathrow Airport in March
MOST POPULAR MONTH TO FLY TO KEY WEST FROM LONDON HEATHROW AIRPORT	August	620% more users visited	More momondo users searched in flights to Key West from London Heathrow Airport in August than any other month

Cheap Key West flight deals and tips

Summary info about Key West flight prices, duration and airlines

Best Round-Trip Price	£488
Fastest flight time	13h 49m
Popular in	October

The best round-trip flight price to Key West from United Kingdom in the last 72 hours is £488 (London Heathrow to Key West).

Search Deals

The fastest flight to Key West from United Kingdom takes 13h 49m (London Heathrow to Key West).

Search Deals

October has the highest demand for flights to Key West, with a 16% price increase on average.

Search Deals

Frequently asked questions about flying to Key West

What is there to do in Key West when it’s raining?

Users planning a flight to Key West during the months of August or September should anticipate rain. There are still things to do in Key West even when it's raining, though. Many tourists kill time during rain and storms by going to shopping centres in the area, like Duval Street.

When did momondo last update prices for flights to Key West Airport?

Prices for flights to Key West Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Key West Airport?

As of November 2025, there are 5 operators available to choose from for flights to Key West Airport.

How old do you have to be to fly to Key West Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Big Pine Key

Why use momondo?

Why should I use momondo to find a flight deal to Key West?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Key West.

Can I find flights to Key West with flexible booking policies on momondo?

momondo does allow users to show only those flights to Key West which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights to Key West?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to Key West.

I’m not ready to book a flight to Key West right now. Can momondo alert me if prices change?

Yes. momondo can track flight prices for Key West and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Key West trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 13/12

Sat 20/12

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Key West

£488 Cheap flights to Key West

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Key West departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from the United Kingdom to Key West

Cheap return flights

Cheap one-way flights

momondo Fare Finder

Use the filters below to find and compare flights to Key West that are best for you.

See travel insights to Key West from

Key West flights insights and trends

Explore insights for your Key West flight to craft the best travel plan

What is the cheapest month to fly to Key West?

If you aren’t able to travel to Key West during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £530.

What is the cheapest day to depart on your flight to Key West?

What is the cheapest time of day to depart on your flight to Key West?

How long does it take to fly to Key West?

Cheapest flights to Key West

Find the cheapest flights to Key West from your nearest city or airport

Cheap Key West flight deals and tips

Summary info about Key West flight prices, duration and airlines

Best Round-Trip Price

Fastest flight time

Popular in

Frequently asked questions about flying to Key West

What is there to do in Key West when it’s raining?

When did momondo last update prices for flights to Key West Airport?

How many operators does momondo search for flights to Key West Airport?

How old do you have to be to fly to Key West Airport?

What documentation or ID do you need to fly to Key West Airport?

Travelling to a place near Key West?

Why use momondo?

Why should I use momondo to find a flight deal to Key West?

Can I find flights to Key West with flexible booking policies on momondo?

How can momondo help me find flights to Key West?

I’m not ready to book a flight to Key West right now. Can momondo alert me if prices change?

An easier way to manage your Key West trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Key West

Popular Flights to Key West

Popular routes according to searches in the past day on momondo