What is the cheapest airline that flies from London Heathrow to Florida Keys?

British Airways, United Airlines, and Delta are the most popular carriers operating from London Heathrow to Florida Keys

Which airlines fly to Florida Keys?

Virgin Atlantic, American Airlines and British Airways are the top three most popular airlines that fly to Florida Keys from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from London Heathrow Airport to Florida Keys?

There are 17 operators available for flights from London Heathrow Airport to Florida Keys as of June 2026.

How old do you have to be to fly from London Heathrow Airport to Florida Keys?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£343 Cheap Flights from London Heathrow Airport to Florida Keys in 2026

Q: How many flights depart from London Heathrow Airport to Florida Keys on average per week?

The number of flights available between London Heathrow Airport and Florida Keys is 162 per week as of June 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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Find the cheapest flights from London Heathrow Airport to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

12:05 - 13:02

LHR

EYW

29h 57m

2 stops

16:05 - 11:05

EYW

LHR

38h 00m

2 stops

£501United Airlines

Sat, 7 Nov - Mon, 7 Dec

15:35 - 20:15

LHR

MIA

9h 40mdirect

17:05 - 06:55

MIA

LHR

8h 50mdirect

£506British Airways

Thu, 1 Oct - Sun, 4 Oct

06:35 - 13:02

LHR

EYW

35h 27m

2 stops

14:30 - 21:20

EYW

LHR

25h 50m

1 stop

£506United Airlines

Sat, 14 Nov - Wed, 18 Nov

06:35 - 13:02

LHR

EYW

35h 27m

2 stops

14:30 - 21:20

EYW

LHR

25h 50m

1 stop

£506United Airlines

Sat, 14 Nov - Wed, 18 Nov

11:05 - 15:06

LHR

EYW

57h 01m

2 stops

14:30 - 20:35

EYW

LHR

50h 05m

2 stops

£517United Airlines

Sat, 24 Oct - Sat, 31 Oct

12:00 - 20:21

LHR

MIA

13h 21m

1 stop

19:30 - 09:25

MIA

LHR

8h 55mdirect

£523Iberia

Fri, 3 Jul - Sat, 18 Jul

12:00 - 20:21

LHR

MIA

13h 21m

1 stop

19:30 - 09:25

MIA

LHR

8h 55mdirect

£523Iberia

Sat, 4 Jul - Mon, 13 Jul

15:50 - 20:45

LHR

MIA

9h 55mdirect

18:05 - 08:05

MIA

LHR

9h 00mdirect

£525Virgin Atlantic

Wed, 1 Jul - Wed, 8 Jul

10:55 - 15:50

LHR

MIA

9h 55mdirect

22:35 - 12:35

MIA

LHR

9h 00mdirect

£526Air France

Mon, 13 Jul - Mon, 20 Jul

07:50 - 10:56

LHR

EYW

32h 06m

2 stops

14:31 - 07:50

EYW

LHR

12h 19m

1 stop

£549Finnair

Tue, 1 Sep - Tue, 8 Sep

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Iberia flights from London Heathrow Airport to Florida Keys

Our best Iberia deals on London Heathrow Airport to Florida Keys flight tickets

Iberia

3 Jul

LHR12:00London Heathrow

13h 21m

1 stop

MIA20:21Miami

14 Jul

MIA19:30Miami

8h 55m

LHR09:25London Heathrow

£523

Iberia

4 Jul

LHR12:00London Heathrow

13h 21m

1 stop

MIA20:21Miami

13 Jul

MIA19:30Miami

8h 55m

LHR09:25London Heathrow

£523

Iberia

26 Jun

LHR12:15London Heathrow

9h 40m

MIA16:55Miami

5 Jul

MIA09:55Miami

16h 25m

1 stop

LHR07:20London Heathrow

£531

Air France flights from London Heathrow Airport to Florida Keys

Our best Air France deals on London Heathrow Airport to Florida Keys flight tickets

Air France

13 Jul

LHR10:55London Heathrow

9h 55m

MIA15:50Miami

20 Jul

MIA22:35Miami

9h 00m

LHR12:35London Heathrow

£526

Air France

23 Jun

LHR15:50London Heathrow

9h 55m

MIA20:45Miami

28 Jun

MIA22:35Miami

9h 00m

LHR12:35London Heathrow

£527

Air France

25 Jun

LHR15:50London Heathrow

9h 55m

MIA20:45Miami

8 Jul

MIA18:05Miami

9h 00m

LHR08:05London Heathrow

£531

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 7/11

12:05-13:02

2 stops29h 57m

Key West

Mon 7/12

16:05-11:05

2 stops38h 00m

£501

Fastest return journey

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 1/10

15:35-20:15

Nonstop9h 40m

Miami

Sun 4/10

17:05-06:55

Nonstop8h 50m

£506

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 14/11

06:35-13:02

2 stops35h 27m

Key West

Wed 18/11

14:30-21:20

1 stop25h 50m

£506

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 14/11

06:35-13:02

2 stops35h 27m

Key West

Wed 18/11

14:30-21:20

1 stop25h 50m

£506

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Sat 24/10

11:05-15:06

2 stops57h 01m

Key West

Sat 31/10

14:30-20:35

2 stops50h 05m

£517

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 3/7

12:00-20:21

1 stop13h 21m

Miami

Sat 18/7

19:30-09:25

Nonstop8h 55m

£523

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 4/7

12:00-20:21

1 stop13h 21m

Miami

Mon 13/7

19:30-09:25

Nonstop8h 55m

£523

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 1/7

15:50-20:45

Nonstop9h 55m

Miami

Wed 8/7

18:05-08:05

Nonstop9h 00m

£525

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 13/7

10:55-15:50

Nonstop9h 55m

Miami

Mon 20/7

22:35-12:35

Nonstop9h 00m

£526

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Tue 1/9

07:50-10:56

2 stops32h 06m

Key West

Tue 8/9

14:31-07:50

1 stop12h 19m

£549

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The cheapest month to fly to Florida Keys from London Heathrow Airport is in January. Flight prices, which tend to average around £471, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Florida Keys, with average flight prices from London Heathrow Airport averaging around £484.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from London Heathrow Airport to Florida Keys is on a Wednesday. Travellers who choose to depart for Florida Keys on a Wednesday will often find tickets for as low as £583. On the other hand, Sunday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £661.

What is the cheapest time of day to depart on your flight to Florida Keys?

Our most recent data shows that the best time of day to fly to Florida Keys is at midday. Flights from London Heathrow Airport to Florida Keys during this time can be as low as £596. Flights in the afternoon are often more expensive, with an average ticket price of £646.

How far in advance should I book a flight from London Heathrow Airport to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around £554 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from London Heathrow Airport for as low as £497 on momondo.

Can stopping save me money on London Heathrow Airport to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Florida Keys.

Cheap London Heathrow Airport to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Florida Keys

Fastest flight time	9h 35m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from London Heathrow Airport to Florida Keys takes 9h 35m

Direct flights go from London Heathrow Airport to Florida Keys every day.

There are 3 airports in Florida Keys. From London Heathrow Airport there are direct flights to Miami (MIA).

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Frequently asked questions about flying from London Heathrow Airport to Florida Keys

When did momondo last update prices for flights from London Heathrow Airport to Florida Keys?
Prices for flights from London Heathrow Airport to Florida Keys are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Florida Keys?
There are 17 operators available for flights from London Heathrow Airport to Florida Keys as of June 2026.
How old do you have to be to fly from London Heathrow Airport to Florida Keys?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Florida Keys?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Florida Keys is Boeing 787-9 Dreamliner (21.51% of total bookings). The next most popular plane models are Airbus A350-1000 (16.02%), Boeing 777 (14.44%), and Boeing 787-8 Dreamliner (8.57%).

Best airlines flying from London Heathrow Airport to Florida Keys

Compare and see reviews for airlines that fly from London Heathrow Airport to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £481	Free Cancellation	Rating 6.7 8,053 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £493	Free Cancellation	Rating 7.5 690 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom £516	Free Cancellation	Rating 7.1 11,669 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Florida Keys?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Florida Keys. momondo saves you time and could save you money on your trip.

Can I find flights from London to Florida Keys with flexible booking policies on momondo?

Yes. All flights to Florida Keys from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Florida Keys?

Once all potential London to Florida Keys flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Florida Keys right now. Can momondo alert me if prices change?

Price alerts on flights to Florida Keys from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.