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Cheap flights from Florida Keys to London from £275

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Florida Keys to London departing on 14/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Lufthansa Logo
17:05 - 10:25
MIA
-
LHR
12h 20m1 stop
Lufthansa Logo
20:15 - 16:55
LHR
-
MIA
25h 40m1 stop
£444Lufthansa
Sat, 28 Feb - Fri, 6 Mar
Multiple Airlines Logo
08:00 - 20:35
MIA
-
LHR
31h 35m2 stops
Multiple Airlines Logo
13:45 - 14:40
LHR
-
MIA
29h 55m1 stop
£444Multiple Airlines
Sat, 24 Jan - Sat, 31 Jan
Multiple Airlines Logo
08:00 - 07:10
MIA
-
LHR
18h 10m1 stop
Multiple Airlines Logo
18:40 - 17:30
LHR
-
MIA
27h 50m1 stop
£445Multiple Airlines
Sat, 24 Jan - Sat, 31 Jan
Austrian Airlines Logo
12:35 - 09:10
MIA
-
LHR
15h 35m1 stop
Austrian Airlines Logo
18:00 - 20:29
LHR
-
MIA
31h 29m1 stop
£446Austrian Airlines
Sat, 24 Jan - Sat, 31 Jan
Scandinavian Airlines Logo
20:40 - 14:35
MIA
-
LHR
36h 55m2 stops
Scandinavian Airlines Logo
06:40 - 23:20
LHR
-
MIA
21h 40m2 stops
£446Scandinavian Airlines
Wed, 14 Jan - Sat, 17 Jan
Virgin Atlantic Logo
17:10 - 07:00
MIA
-
LHR
8h 50mdirect
Virgin Atlantic Logo
11:30 - 20:30
LHR
-
MIA
14h 00m1 stop
£447Virgin Atlantic
Wed, 11 Feb - Wed, 18 Feb
Finnair Logo
22:15 - 12:05
MIA
-
LHR
8h 50mdirect
Finnair Logo
16:15 - 17:50
LHR
-
MIA
29h 35m1 stop
£449Finnair
Wed, 4 Mar - Tue, 10 Mar
KLM Logo
18:06 - 11:40
EYW
-
LHR
12h 34m1 stop
KLM Logo
06:30 - 19:40
LHR
-
EYW
18h 10m2 stops
£467KLM
Sun, 25 Jan - Sun, 1 Feb
British Airways Logo
13:36 - 11:30
EYW
-
LHR
16h 54m1 stop
British Airways Logo
11:15 - 23:56
LHR
-
EYW
16h 41m1 stop
£486British Airways
Wed, 4 Mar - Wed, 11 Mar
British Airways Logo
19:45 - 06:50
EYW
-
LHR
30h 05m1 stop
British Airways Logo
06:00 - 23:56
LHR
-
EYW
22h 56m2 stops
£492British Airways
Sun, 1 Feb - Tue, 10 Feb

Virgin Atlantic flights from Florida Keys to London Heathrow Airport

Our best Virgin Atlantic deals on Florida Keys to London Heathrow Airport flight tickets
Virgin Atlantic
26 Jan
MIA17:10Miami
8h 50m
LHR07:00London Heathrow
1 Feb
LHR06:20London Heathrow
16h 20m
1 stop
MIA17:40Miami
£446
Find similar
Virgin Atlantic
25 Jan
MIA17:10Miami
8h 50m
LHR07:00London Heathrow
1 Feb
LHR06:20London Heathrow
16h 20m
1 stop
MIA17:40Miami
£449
Find similar
Virgin Atlantic
24 Jan
MIA22:00Miami
8h 45m
LHR11:45London Heathrow
31 Jan
LHR19:20London Heathrow
27h 20m
1 stop
MIA17:40Miami
£454
Find similar

Air Canada flights from Florida Keys to London Heathrow Airport

Our best Air Canada deals on Florida Keys to London Heathrow Airport flight tickets
Air Canada
24 Jan
MIA11:35Miami
13h 55m
1 stop
LHR06:30London Heathrow
31 Jan
LHR13:25London Heathrow
14h 04m
1 stop
MIA22:29Miami
£455
Find similar
Air Canada
26 Jan
MIA08:00Miami
17h 30m
2 stops
LHR06:30London Heathrow
2 Feb
LHR06:50London Heathrow
15h 39m
2 stops
MIA17:29Miami
£466
Find similar
Air Canada
12 Jan
MIA18:40Miami
36h 10m
1 stop
LHR11:50London Heathrow
22 Jan
LHR06:50London Heathrow
20h 39m
2 stops
MIA22:29Miami
£495
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Florida Keys to London Heathrow Airport 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 29 December 2025.
Use the filters below to find and compare flights from Florida Keys to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 28/2

17:05-10:25

1 stop12h 20m

London Heathrow

Fri 6/3

20:15-16:55

1 stop25h 40m

£444

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 24/1

08:00-20:35

2 stops31h 35m

London Heathrow

Sat 31/1

13:45-14:40

1 stop29h 55m

£444

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 24/1

08:00-07:10

1 stop18h 10m

London Heathrow

Sat 31/1

18:40-17:30

1 stop27h 50m

£445

MiamiLondon

MIA - LHR

MIALHR

Miami

Sat 24/1

12:35-09:10

1 stop15h 35m

London Heathrow

Sat 31/1

18:00-20:29

1 stop31h 29m

£446

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 14/1

20:40-14:35

2 stops36h 55m

London Heathrow

Sat 17/1

06:40-23:20

2 stops21h 40m

£446

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 11/2

17:10-07:00

Nonstop8h 50m

London Heathrow

Wed 18/2

11:30-20:30

1 stop14h 00m

£447

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 4/3

22:15-12:05

Nonstop8h 50m

London Heathrow

Tue 10/3

16:15-17:50

1 stop29h 35m

£449

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 25/1

18:06-11:40

1 stop12h 34m

London Heathrow

Sun 1/2

06:30-19:40

2 stops18h 10m

£467

Key WestLondon

EYW - LHR

EYWLHR

Key West

Wed 4/3

13:36-11:30

1 stop16h 54m

London Heathrow

Wed 11/3

11:15-23:56

1 stop16h 41m

£486

Key WestLondon

EYW - LHR

EYWLHR

Key West

Sun 1/2

19:45-06:50

1 stop30h 05m

London Heathrow

Tue 10/2

06:00-23:56

2 stops22h 56m

£492

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 London from

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

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 London Heathrow Airport?

In general, February is the cheapest month to fly from Florida Keys to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £396. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Florida Keys averaging around £455.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Florida Keys is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £500. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £647.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Florida Keys to London Heathrow Airport in the evening for as low as £549. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £554 on average. Flights to London Heathrow Airport from Florida Keys in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Florida Keys when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £543 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Florida Keys for as low as £460 on momondo.

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

You could potentially save up to 15% on your flight if you consider stops on a Florida Keys to London Heathrow Airport flight.

Cheap Florida Keys to London Heathrow Airport flight deals and tips

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

Fastest flight time

8h 30m

Direct flights

Every day
The fastest flight from Florida Keys to London Heathrow Airport takes 8h 30m
Direct flights go from Florida Keys to London Heathrow Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Florida Keys to London Heathrow Airport?

    Prices for flights from Florida Keys to London Heathrow Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Florida Keys to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow 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 London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Florida Keys to London Heathrow Airport?

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Swindon
Stratford-upon-Avon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Hayes
Swanage
Chelmsford
Dover
Worthing

Why use momondo?

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

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 London from Florida Keys.

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

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

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

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 from Florida Keys to London.

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

Of course. momondo tracks the price of Florida Keys to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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