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Cheap flights from London Heathrow Airport to Florida Keys from £211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Florida Keys departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Florida Keys

Cheap return flights

United Airlines Logo
09:00 - 18:30LHR-MIA
13h 30m1 stop
United Airlines Logo
11:09 - 06:40MIA-LHR
14h 31m2 stops
£365United Airlines
Find Deal
Wed, 29 Oct - Thu, 6 Nov
United Airlines Logo
09:30 - 22:50LHR-MIA
18h 20m2 stops
United Airlines Logo
13:26 - 05:55MIA-LHR
11h 29m1 stop
£366United Airlines
Find Deal
Tue, 7 Oct - Tue, 14 Oct
United Airlines Logo
08:30 - 22:20LHR-MIA
18h 50m2 stops
United Airlines Logo
18:08 - 11:05MIA-LHR
11h 57m1 stop
£367United Airlines
Find Deal
Sat, 24 Jan - Sat, 31 Jan
United Airlines Logo
07:45 - 18:51LHR-MIA
16h 06m2 stops
United Airlines Logo
16:56 - 11:35MIA-LHR
13h 39m1 stop
£368United Airlines
Find Deal
Tue, 7 Oct - Wed, 15 Oct
Virgin Atlantic Logo
17:35 - 18:40LHR-MIA
29h 05m1 stop
Virgin Atlantic Logo
21:25 - 11:10MIA-LHR
8h 45mdirect
£369Virgin Atlantic
Find Deal
Tue, 28 Oct - Tue, 4 Nov
Virgin Atlantic Logo
09:25 - 14:50LHR-MIA
10h 25mdirect
Virgin Atlantic Logo
15:42 - 08:05MIA-LHR
11h 23m1 stop
£370Virgin Atlantic
Find Deal
Mon, 3 Nov - Mon, 10 Nov
British Airways Logo
08:55 - 16:38LHR-MIA
12h 43m1 stop
British Airways Logo
13:40 - 06:40MIA-LHR
12h 00m1 stop
£372British Airways
Find Deal
Tue, 30 Sep - Tue, 7 Oct
British Airways Logo
08:55 - 16:35LHR-MIA
12h 40m1 stop
British Airways Logo
15:25 - 07:40MIA-LHR
11h 15m1 stop
£373British Airways
Find Deal
Wed, 1 Oct - Tue, 7 Oct
Finnair Logo
13:30 - 10:45LHR-MIA
25h 15m1 stop
Finnair Logo
17:57 - 22:10MIA-LHR
23h 13m2 stops
£394Finnair
Find Deal
Tue, 28 Oct - Mon, 3 Nov
Air France Logo
06:20 - 19:44LHR-EYW
17h 24m2 stops
Air France Logo
18:00 - 13:45EYW-LHR
15h 45m2 stops
£536Air France
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Thu, 12 Mar - Mon, 16 Mar

American Airlines flights from London Heathrow Airport to Florida Keys

Our best American Airlines deals on London Heathrow Airport to Florida Keys flight tickets
American Airlines
10 Feb
LHR09:45London Heathrow
9h 55m
MIA14:40Miami
17 Feb
MIA22:40Miami
8h 25m
LHR12:05London Heathrow
£401
Find similar
American Airlines
22 Sept
LHR12:15London Heathrow
9h 45m
MIA17:00Miami
6 Oct
MIA21:05Miami
8h 30m
LHR10:35London Heathrow
£403
Find similar
American Airlines
22 Sept
LHR11:00London Heathrow
13h 42m
1 stop
MIA19:42Miami
6 Oct
MIA17:16Miami
10h 49m
1 stop
LHR09:05London Heathrow
£406
Find similar

United Airlines flights from London Heathrow Airport to Florida Keys

Our best United Airlines deals on London Heathrow Airport to Florida Keys flight tickets
United Airlines
29 Oct
LHR09:00London Heathrow
13h 30m
1 stop
MIA18:30Miami
6 Nov
MIA11:09Miami
14h 31m
2 stops
LHR06:40London Heathrow
£365
Find similar
United Airlines
7 Oct
LHR09:30London Heathrow
18h 20m
2 stops
MIA22:50Miami
14 Oct
MIA13:26Miami
11h 29m
1 stop
LHR05:55London Heathrow
£366
Find similar
United Airlines
24 Jan
LHR08:30London Heathrow
18h 50m
2 stops
MIA22:20Miami
31 Jan
MIA18:08Miami
11h 57m
1 stop
LHR11:05London Heathrow
£367
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Florida Keys 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, momondo users made 279,928 searches. Data last updated 16 September 2025.
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

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 29/10

09:00-18:30

1 stop13h 30m

Miami

Thu 6/11

11:09-06:40

2 stops14h 31m

£365

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 7/10

09:30-22:50

2 stops18h 20m

Miami

Tue 14/10

13:26-05:55

1 stop11h 29m

£366

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 24/1

08:30-22:20

2 stops18h 50m

Miami

Sat 31/1

18:08-11:05

1 stop11h 57m

£367

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 7/10

07:45-18:51

2 stops16h 06m

Miami

Wed 15/10

16:56-11:35

1 stop13h 39m

£368

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 28/10

17:35-18:40

1 stop29h 05m

Miami

Tue 4/11

21:25-11:10

Nonstop8h 45m

£369

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Mon 3/11

09:25-14:50

Nonstop10h 25m

Miami

Mon 10/11

15:42-08:05

1 stop11h 23m

£370

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 30/9

08:55-16:38

1 stop12h 43m

Miami

Tue 7/10

13:40-06:40

1 stop12h 00m

£372

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 1/10

08:55-16:35

1 stop12h 40m

Miami

Tue 7/10

15:25-07:40

1 stop11h 15m

£373

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 28/10

13:30-10:45

1 stop25h 15m

Miami

Mon 3/11

17:57-22:10

2 stops23h 13m

£394

LondonKey West

LHR - EYW

LHREYW

London Heathrow

Thu 12/3

06:20-19:44

2 stops17h 24m

Key West

Mon 16/3

18:00-13:45

2 stops15h 45m

£536

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Florida Keys from

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

What is the cheapest month to fly to Florida Keys?

The cheapest month to fly to Florida Keys from London Heathrow Airport is in November. Flight prices, which tend to average around £438, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Florida Keys, with average flight prices from London Heathrow Airport averaging around £445.

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 £558. 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 £657.

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 in the evening. Flights from London Heathrow Airport to Florida Keys during this time can be as low as £528. Flights in the morning are often more expensive, with an average ticket price of £614.

How far in advance should I book a flight 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 £520 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 £479 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 30m

Direct flights

Every day

Airports in Florida Keys

1 airport
The fastest flight from London Heathrow Airport to Florida Keys takes 9h 30m
Direct flights go from London Heathrow Airport to Florida Keys every day.
There is 1 airport near Florida Keys: Miami (MIA)
Search flight deals

  • 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?

  • 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?

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
Virgin AtlanticPriceFrom £441Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £444Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
American AirlinesPriceFrom £510Free CancellationRating
7.2
10,000 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.

An easier way to manage your Florida Keys trip

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